Digital computer information control applications are constantly being created for different electrical power systems. Well-designed programmers, complex power systems can be converted to simpler and adequate systems. The transient analysis of software programs combined with the enhanced operational parameter transformation is the basis of the primary structure’s calculations acceleration. The possibility of fundamental simulations was explored both in the modelling of the load flow control of complex electrical power systems and in the identification of electromagnetic short circuit transients. It is no wonder that many programs have appeared recently, including those that analyze the load flow by performing electric voltage calculations with extremely accurate results. In addition, the equipment is evaluated automatically, and computational summaries are created with the addition of warnings. Analyzing electrical load flow and smart graphics play a big role in the efficiency of programs and increase their use of people. It is worth talking about the efficiency of the programs for calculating the electrical load that has gained popularity in recent times. Considering that one of the programs is DlgSilent, which will be our focus in this project because it is the program used. As for the other systems, find ASPEN, ETAP, PSLF, RADIRING, and the famous program MATLAB.
DIgSILENT Power Factory:
Comparison between systems shows the importance and difference of each program. Several calculating methods for the load flow, including the complete AC Newton-Raphson (balanced and unequalled) method and linear DC methods are included in DIgSILENT Power Factory. The improved Newton Raphson non-decoupled solution technology with current and/or power malfunction iterations generates round-off error for all busses below 1kVA. The algorithms implemented are extremely stable and convergent. Various iteration levels guarantee convergence under all conditions, with automatic optional relaxation and constraint change The DC charging stream is amazingly quick and vigorous for dynamic force streams and voltage points (direct framework; no cycles required). Knowing the balanced and unequalled load flow for AC and DC networks, DlgSILENT estimates. Moreover, the DC load flow is analyzed. The feature of this software is that it offers a rapid and efficient convergence of altered starting points with the latest numerical solutions for active/reactive voltage and power control functions, such as SVC and user switching controllers.[1]

paul willis (born 1950) is a british social scientist known for his work in sociology and cultural studies. paul willis' work is widely read in the fields of sociology, anthropology, and education, his work emphasizing consumer culture, socialization, music, and popular culture. he was born in wolverhampton[1] and received his education at the university of cambridge and at the university of birmingham. he worked at centre for contemporary cultural studies and subsequently at the university of wolverhampton. he was a professor of social/cultural ethnography at keele university. in the autumn of 2010, he left keele university and is now a professor at princeton university.

paul willis’s work has focused mainly, but not exclusively, on the ethnographic study of lived cultural forms in a wide variety of contexts. from highly structured to weakly structured ones, willis examines how practices of `informal cultural production` to produce and construct cultural worlds `from below`.[2]

trained in literary criticism at cambridge,[2] paul willis received his phd in 1972 from the centre for contemporary cultural studies at birmingham university where he remained as senior research fellow until 1981. he gave a paper at the 9th symposium of the natiohnal deviancy conference in january 1972 entitled 'a motor-bike subculture

during the 1980`s willis served as youth policy adviser to wolverhampton borough council in the english midlands. there he produced the youth review (published by the council and ashgate) which formed the basis for youth policy and for the formation of the democratically elected youth council, both still functioning. during the 1990s he served first as head of the division of media, communications and cultural studies, and then as a member of the professoriate at the university of wolverhampton. in 2000 willis co-founded the sage journal, ethnography. in 2003 willis was hired as a head professor of social and cultural ethnography at keele university.

this statement is   true

athenian democracy developed around the fifth century bc in the greek city-state (known as a polis) of athens, comprising the city of athens and the surrounding territory of attica, and is often described as the first known democracy in the world. other greek cities set up democracies, most following the athenian model, but none are as well documented as athens'.

it was a political system of direct democracy, in which participating citizens voted directly on legislation and executive bills. participation was not open to all residents: to vote one had to be an adult, male citizen, i.e., not a foreign resident, a submissive or a woman, and the number of these was "probably no more than 30 percent of the total adult population."[1]

the longest-lasting democratic leader was pericles. after his death, athenian democracy was twice briefly interrupted by oligarchic revolutions towards the end of the peloponnesian war. it was modified somewhat after it was restored under eucleides; the most detailed accounts of the system are of this fourth-century modification rather than the periclean system. democracy was suppressed by the macedonians in 322 bc. the athenian institutions were later revived, but how close they were to a real democracy is debatable. solon (594 bc), cleisthenes (508/7 bc), and ephialtes (462 bc) contributed to the development of athenian democracy. cleisthenes broke up the power of the nobility by organizing citizens into ten groups based on where they lived rather than on their wealth.

hope this !

the correct answer is b.