A alocação de capacidade de um Call Center depende da carga do sistema, cuja medida é Erlang. Para um sistema de telefonia em que a taxa de chegadas é de 100 Chamadas Por Hora - CPH, e cada chamada necessita de 15 minutos de serviço, o volume do tráfego, em Erlang, em um dia com 10 horas de trabalho, é igual a:
O modelo Fault, Configuration, Accounting, Performance and Security - FCAPS de gerenciamento de redes, dados e telecomunicações atua nas seguintes áreas funcionais da gerência de redes:
A estrutura (TST) Temporal - Espacial – Temporal utilizada na
comutação telefônica objetiva aumentar a capacidade de
comutação das matrizes temporais. Uma estrutura TST pode ser
representada por um equivalente espacial, por meio de blocos
(matrizes básicas), como apresentado na figura abaixo.
Para essa matriz de três estágios, a condição de não bloqueio
implica ter no Estágio 2 um número de matrizes básicas igual a:
Analise as seguintes afirmativas a respeito do Radio Access Network – RAN. I A economia no custo de operação da camada de acesso depende da intensidade do compartilhamento. II Consiste no compartilhamento da BTS e da BSC por mais de uma operadora de telefonia celular. III Aumenta o custo de energia nos elementos passivos, como o ar condicionado. Está correto somente o que se afirma em:
Pela falta de energia, no dia 01 de junho todos os geradores de
energia elétrica de uma fábrica foram ligados e o estoque de
combustível que a fábrica possuía permitiria manter os geradores
funcionando por 30 dias. Entretanto, depois de 10 dias de
funcionamento de todos os geradores, a metade deles foi
desligada.
O combustível restante permitiu que os outros geradores
continuassem a funcionar até o dia:
Beralda comprou uma caixa contendo 15 dúzias de comprimidos
de complementos vitamínicos e tomou um por dia, todos os dias,
sem interrupção.
Se Beralda tomou o primeiro comprimido em uma segunda-feira,
o último comprimido da caixa foi tomado em:
Mining tourism in Ouro Preto
Ouro Preto is surrounded by a rich and varied natural
environment with waterfalls, hiking trails and native vegetation
partially protected as state parks. Parts of these resources are
used for tourism. Paradoxically, this ecosystem contrasts with the
human occupation of the region that produced, after centuries, a
rich history and a cultural connection to mining, its oldest
economic activity which triggered occupation. The region has an
unlimited potential for tourism, especially in specific segments
such as mining heritage tourism, in association or not with the
existing ecotourism market. In fact, in Ouro Preto, tourism,
history, geology and mining are often hard to distinguish; such is
the inter-relationship between these segments.
For centuries, a major problem of mining has been the reuse of
the affected areas. Modern mining projects proposed solutions to
this problem right from the initial stages of operation, which did
not happen until recently. As a result, most quarries and other
old mining areas that do not have an appropriate destination
represent serious environmental problems. Mining tourism
utilizing exhausted mines is a source of employment and income.
Tourism activities may even contribute to the recovery of
degraded areas in various ways, such as reforestation for leisure
purposes, or their transformation into history museums where
aspects of local mining are interpreted.
Minas Gerais, and particularly Ouro Preto, provides the strong
and rich cultural and historical content needed for the
transformation of mining remnants into attractive tourism
products, especially when combined with the existing cultural
tourism of the region. Although mining tourism is explored in
various parts of the world in extremely different social, economic,
cultural and natural contexts, in Brazil it is still not a strategy
readily adopted as an alternative for areas affected by mining
activities.
(Lohmann, G. M.; Flecha, A. C.; Knupp, M. E. C. G.; Liccardo, A.
(2011). Mining tourism in Ouro Preto, Brazil: opportunities and
challenges. In: M. V. Conlin; L. Jolliffe (eds). Mining heritage and
tourism: a global synthesis. New York: Routledge, pp. 194-202.)
Mark the statements below as TRUE (T ) or FALSE ( F) according to Text 1. ( ) Tourism may actually be quite beneficial to some degraded mining areas. ( ) Mining tourism has recently been promptly embraced by Brazilian regions. ( ) Ouro Preto is attracting people because mining is one of its most recent activities. The correct sequence is:
Mining tourism in Ouro Preto
Ouro Preto is surrounded by a rich and varied natural
environment with waterfalls, hiking trails and native vegetation
partially protected as state parks. Parts of these resources are
used for tourism. Paradoxically, this ecosystem contrasts with the
human occupation of the region that produced, after centuries, a
rich history and a cultural connection to mining, its oldest
economic activity which triggered occupation. The region has an
unlimited potential for tourism, especially in specific segments
such as mining heritage tourism, in association or not with the
existing ecotourism market. In fact, in Ouro Preto, tourism,
history, geology and mining are often hard to distinguish; such is
the inter-relationship between these segments.
For centuries, a major problem of mining has been the reuse of
the affected areas. Modern mining projects proposed solutions to
this problem right from the initial stages of operation, which did
not happen until recently. As a result, most quarries and other
old mining areas that do not have an appropriate destination
represent serious environmental problems. Mining tourism
utilizing exhausted mines is a source of employment and income.
Tourism activities may even contribute to the recovery of
degraded areas in various ways, such as reforestation for leisure
purposes, or their transformation into history museums where
aspects of local mining are interpreted.
Minas Gerais, and particularly Ouro Preto, provides the strong
and rich cultural and historical content needed for the
transformation of mining remnants into attractive tourism
products, especially when combined with the existing cultural
tourism of the region. Although mining tourism is explored in
various parts of the world in extremely different social, economic,
cultural and natural contexts, in Brazil it is still not a strategy
readily adopted as an alternative for areas affected by mining
activities.
(Lohmann, G. M.; Flecha, A. C.; Knupp, M. E. C. G.; Liccardo, A.
(2011). Mining tourism in Ouro Preto, Brazil: opportunities and
challenges. In: M. V. Conlin; L. Jolliffe (eds). Mining heritage and
tourism: a global synthesis. New York: Routledge, pp. 194-202.)
The phrase “As a result” (l.16) can be replaced by:
TEXT 3
Sustainable mining – oxymoron or a way of the future?
Mining is an activity that has persisted since the start of humans
using tools. However, one might argue that digging a big hole in
the ground and selling the finite resources that come out of that
hole is not sustainable, especially when the digging involves the
use of other finite resources (i.e. fuels) and produces a lot of
greenhouse gases.
The counter argument could go along the lines that minerals are
not being lost or destroyed through mining and mineral
processing – the elements are being shifted around, and
converted into new forms. Metals can even be extracted from
waste, seawater or even sewage, and recycled. But a more simple
argument is possible: a mine can be sustainable if it is
economically, socially and environmentally beneficial in the short
and long term. To be sustainable, the positive benefits of mining
should outweigh any negative impacts. […]
Social positives are often associated with mines in regional areas,
such as providing better amenities in a nearby town, or providing
employment (an economic and social positive). Social negatives
can also occur, such as dust, noise, traffic and visual amenity.
These are commonly debated and, whilst sometimes
controversial, can be managed with sufficient corporate
commitment, stakeholder engagement, and enough time to work
through the issues. Time is the key parameter - it may take
several years for a respectful process of community input, but as
long as it is possible for social negatives to be outweighed by
social positives, then the project will be socially sustainable.
It is most likely that a mine development will have some
environmental negatives, such as direct impacts on flora and
fauna through clearing of vegetation and habitat within the mine
footprint. Some mines will have impacts which extend beyond
the mine site, such as disruption to groundwater, production of
silt and disposal of waste. Certainly these impacts will need to be
managed throughout the mine life, along with robust
rehabilitation and closure planning. […]
The real turning point will come when mining companies go
beyond environmental compliance to create 'heritage projects'
that can enhance the environmental or social benefits in a
substantial way – by more than the environmental offsets
needed just to make up for the negatives created by the mine. In
order to foster these innovative mining heritage projects we need
to promote 'sustainability assessments' - not just 'environmental
assessments'. This will lead to a more mature appreciation of the
whole system whereby the economic and social factors, as well as
environmental factors, are considered in a holistic manner.
(adapted from https://www.engineersaustralia.org.au/westernaustralia-division/sustainable-mining-oxymoron-or-way-future.
Retrieved on August 10, 2015)
The title suggests that the expression “sustainable mining” may:
Em uma urna há duas bolas pretas e duas bolas brancas. Ana retira, aleatoriamente e sem reposição, duas bolas da urna, e Beatriz retira as duas bolas que sobraram. A probabilidade de Beatriz retirar duas bolas da mesma cor é:
Um marco histórico importante para os arquivos é a Revolução Francesa. Além da criação do Arquivo Nacional, de uma “rede de arquivos do Estado”, e da centralização dos arquivos, foi importante o reconhecimento pelo Estado:
Determinada instituição está gerando documentos desnecessários, aumentando o volume a ser manuseado, controlado, armazenado e eliminado. Esse problema pode ser resolvido por meio da gestão de documentos em sua:
Os exemplos de códigos 45.59.20 e 7989/2002 são usados, respectivamente, nos seguintes métodos de classificação:
Ao descrever uma série, pode-se sentir a necessidade de destacar termos que servirão à pesquisa ou à localização dos documentos. Quando se utiliza a NOBRADE para fazer essa descrição, deve-se usar a área de:
Um documento arquivístico em formato digital, para se materializar como um documento arquivístico digital de fato, precisa ter as seguintes características:
