Generating Demand

1 reclamation, claim, petition, claiming back.

Reclamación de tierras Land retrieval.

2 complaint, reclamation, statement of dissatisfaction.

3 reclamation, retrieval.

Reclamación de tierras Land retrieval.

* * *

► nombre femenino

1 (demanda) claim, demand

2 (queja) complaint, protest, objection

\

presentar una reclamación to lodge a complaint

* * *

1) claim

2) complaint

* * *

1) (=queja) complaint

2) (=reivindicación) claim

* * *

a) (petición, demanda) claim

b) ( queja) complaint

* * *

= chaser, chasing, claiming, complaint, recall, recall notice, claim, claim, letter of complaint, appeal, appeal.

Ex. This package enables the library to carry out the following functions: title searches; keyword searches; generating overdues; generating chasers; printing applications, generating loan statistics; generating reports.

Ex. Various other facilities are available, such as printed orders, chasing, and maintenance of records.

Ex. The Serials Control System handles check-in, claiming and union list of serial publications.

Ex. CACs have dealt with pre-shopping advice, education on consumers' rights and complaints about goods and services, advising the client and often obtaining expert assessments.

Ex. To send a recall, display the circulation status of the copy to be recalled.

Ex. The mail lag in days is the time required for a recall notice to be delivered and for a borrower to return the document to the library.

Ex. Dialog also wants relief from outstanding royalty claims from the American Chemical Society.

Ex. In libraries, a claim is a notice sent to a dealer that an order or item ordered has not been received within a reasonable period of time.

Ex. In the course of reading this article, you may spot a factual error which makes you bristle, or you may think the writing is biased, but by now the ink has dried; all you can do is send a letter of complaint.

Ex. Special prominence has been given to the appeals to implement this task, in which libraries have to play an influential part.

Ex. This article details the first decision in a case of copyright infringement, the appeal, and the dissention of one of he judges.

----

* cola de reclamaciones = recall queue.

* después de la reclamación = postcomplaint [post-complaint].

* hacer una reclamación = lodge + complaint, place + claim.

* interponer una reclamación = file + complaint, appeal.

* mecanismo de reclamación = appeals process, appeals mechanism, appeals procedure.

* normativa de reclamaciones = claim policy.

* poner una reclamación = appeal.

* posterior a la reclamación = postcomplaint [post-complaint].

* presentar una reclamación = enter + complaint, place + claim, file + complaint.

* procedimiento de reclamación = appeals process, appeals mechanism, appeals procedure.

* procedimiento de reclamaciones = grievance procedure.

* proceso de reclamación = appeals process.

* proveedor de reclamaciones = claim vendor.

* reclamación de publicaciones periódicas = periodical claiming.

* reclamaciones publicitarias = advertising claim.

* sistema de aviso de reclamaciones = claims warning system.

* sistema de reclamaciones = chasing system.

* * *

a) (petición, demanda) claim

b) ( queja) complaint

* * *

* * *

1 (petición, demanda) claim

una reclamación judicial a legal claim

2 (queja) complaint

hacer una reclamación to lodge o make a complaint

* * *

a) (petición, demanda) claim

b) ( queja) complaint

* * *

reclamación nf

1. [petición] claim, demand

2. [queja] complaint;

hacer una reclamación to make a complaint

3. [a un seguro] claim

* * *

1 COM complaint

2 POL claim, demand

* * *

reclamación nf, pl - ciones

1) : claim, demand

2) queja: complaint

* * *

reclamación n (queja) complaint

1 commercial.

relaciones comerciales trade relations

2 store.

sales rep (vendedor, representante).

commercial, ad, advertisement, advert.

* * *

► adjetivo

1 (del comercio) commercial

2 (de tiendas) shopping

► nombre masulino o femenino

1 (vendedor) seller; (hombre) salesman; (mujer) saleswoman

\

banco comercial commercial bank

tratado comercial commercial treaty

* * *

* * *

1. ADJ

1) (=de tiendas) [área, recinto] shopping antes de s

2) (=financiero) [carta, operación] business antes de s ; [balanza, déficit, guerra, embargo] trade antes de s ; [intercambio, estrategia] commercial

3) [aviación, avión, piloto] civil

4) [cine, teatro, literatura] commercial

SMF (=vendedor) salesperson

* * *

a) <zona/operación/carta> business (before n)

b) <película/arte> commercial

1) (AmL) commercial, advert (BrE)

2) (CS) (Educ) business school

femenino o masculino ( tienda)

* * *

= commercial, commercially available, entrepreneurial, fee-based, marketing, priceable, for-profit, consumer-like, business-like, business-related, market-orientated [market orientated], profit-making, profit-related, readily available, trade-oriented, profit-orientated, marketable, business, off-the-shelf, commercially operated, market-oriented [market oriented], profit-oriented, out of the box, profit-generating.

Ex. It is these features which have led co-operative members to select these systems rather than those of the commercial software vendor.

Ex. Computerized information-retrieval systems are also very prominent in commercially available online search systems and applications.

Ex. It was noteworthy that nearly all SLIS were maintaining their IT materials as much, if not more, from earnings from entrepreneurial activity than out of institutional allocation.

Ex. The imposition of fee-based services may radically curtail the breadth of resources available to library users where historically information has been offered freely.

Ex. Business International Inc. is another US service covering economic and marketing activities in over seventy countries.

Ex. Neither are the latter group, in the course of their professional activities, likely to feel that the treatment of information as a priceable commodity compromises a principle fundamental to their professional ethic.

Ex. The friction in this industry between private, for-profit services and not-for-profit learned societies or government bodies is deep-seated.

Ex. I tried to say at the very outset of my remarks that there probably has not been sufficient consumer-like and assertive leverage exerted upon our chief suppliers.

Ex. It was generally felt that US libraries are organised on more business-like lines than those in the Netherlands.

Ex. Twinning of libraries in different countries can bring benefits in terms of joint projects, student exchanges, and other buisness-related affairs.

Ex. In the middle range of authorship there is, then, quite a wide band of writing stretching from the scholarly to the market-orientated = En el nivel medio de autoría existe, pues, a una gran gama de producciones escritas que van desde lo científico a lo comercial.

Ex. Many types of budgets are not really applicable to libraries, since libraries are not primarily profit-making institutions.

Ex. However these distinctions are not always clear cut, the public sector may pursue profit-related goals and the private sector may adopt other goals besides profit (improving work environments, quality of life).

Ex. Librarians generally adopt the common strategy of simply using readily available sources of information.

Ex. Trade-oriented scholarly presses also predict more titles, smaller press runs and higher prices.

Ex. Information producers and sellers are profit-orientated.

Ex. Central to this is the belief that information is a marketable commodity.

Ex. A major concern of the journal will be the business, economic, legal, societal and technological relationships between information technology and information resource management.

Ex. A standard off-the-shelf version costs 450 and fully tailored systems usually fall into the range 1,250 -- 1,450.

Ex. There are a number of microfilming centres in the country including two commercially operated microfilming services.

Ex. The market oriented economy is changing the role of information and business information services.

Ex. The author points out dangers inherent in the fact that on-line data bases are privately owned and profit-oriented.

Ex. Software vendors provide manuals for the ' out of the box' programs they sell.

Ex. Examples of determined efforts to erase the intellectual boundaries between the profit-generating models of business and the intellectual pursuits of the academic community are considered.

----

* actividad comercial = commercial activity.

* anuncio comercial = commercial.

* aplicación comercial = commercial application, business application.

* aplicaciones comerciales = commercial software.

* argumento comercial = business case.

* asequible en establecimiento comercial = over the counter.

* aviación comercial = commercial aviation.

* bajo comercial = commercial premise.

* banco comercial = business bank.

* barrera comercial = trade barrier.

* carta comercial = business letter.

* casa comercial = house.

* caso comercial = business case.

* catálogo comercial de compra por correo = mail order catalogue.

* centro comercial = shopping centre, shopping precinct, mall of shops, plaza.

* comercial 7 papel comercial = commercial paper.

* compañía comercial = business firm.

* correspondencia comercial = business correspondence.

* déficit comercial = trade deficit.

* déficit de la balanza comercial = trade deficit.

* de gran éxito comercial = high selling.

* demanda comercial = market demand, commercial demand.

* de modo comercial = on a commercial basis.

* de un gran éxito comercial = best selling [bestselling/best-selling], top-selling.

* de uso comercial = commercially-owned.

* director comercial = chief commercial officer.

* directorio comercial = trade directory, traders' list, traders' catalogue.

* directorio comercial por calles = street directory.

* distrito comercial = business district.

* diversificación comercial = business diversification.

* edificio comercial = commercial building.

* editor comercial = commercial publisher.

* editorial comercial = publishing firm, publishing press.

* emporio comercial = emporium [emporia, -pl.].

* empresa comercial = business firm.

* estafa comercial = business scam.

* estrategia comercial = business plan, market strategy.

* éxito comercial = commercial success, financial success.

* firma comercial = commercial firm, firm, commercial enterprise, business firm.

* galería comercial = shopping arcade, walking arcade.

* horario comercial = business hours.

* industria de las exposiciones comerciales = trade show industry.

* inglés "comercial" = pidgin English.

* licencia comercial = trading licence.

* mantener relaciones comerciales = do + business.

* marca comercial = brand name, servicemark, trade name.

* mundo comercial, el = commercial world, the.

* nación comercial = trading nation.

* no comercial = non-profit making, non-commercial [noncommercial].

* novedad comercial = industry update.

* para uso comercial = commercially-owned.

* parque comercial = business estate.

* poco comercial = uncommercial.

* polígono comercial = business estate.

* presentación comercial = technical presentation.

* producto comercial = retail product.

* programa informático comercial = commercial application, commercial software.

* programas comerciales = commercial software.

* propuesta comercial = business proposition.

* proyecto comercial = marketing project.

* razonamiento comercial = business case.

* relaciones comerciales = business dealings.

* rentabilidad comercial = business profitability.

* representante comercial = business traveller.

* riesgo comercial = business risk.

* secreto comercial = competitive information.

* sector comercial, el = profit-oriented sector, the, profit sector, the, commercial sector, the, for-profit sector, the.

* sector no comercial, el = not-for-profit sector, the, non-profit sector, the.

* servicio comercial = commercial service.

* sistema comercial = market system, commercial system.

* situado en la calle comercial = shop-front [shopfront] .

* socio comercial = business associate.

* software comercial = commercial software.

* valor comercial = commercial paper.

* vehículo comercial = commercial vehicle.

* viajante comercial = business traveller.

* visión comercial = business acumen.

* vuelo comercial = commercial flight.

* zona comercial = business district, shopping area, shopping district.

* * *

a) <zona/operación/carta> business (before n)

b) <película/arte> commercial

1) (AmL) commercial, advert (BrE)

2) (CS) (Educ) business school

femenino o masculino ( tienda)

* * *

* * *

1 ‹distrito/operación› business ( before n)

una importante firma comercial an important company

el desequilibrio comercial entre los dos países the trade imbalance between the two countries

un emporio comercial fenicio a Phoenician trading post

algunos critican su agresividad comercial some people criticize their aggressive approach to business

el déficit comercial the trade deficit

una carta comercial a business letter

nuevas iniciativas comerciales new business initiatives

nuestra división comercial our sales o marketing department

el derribo de un avión comercial the shooting down of a civil aircraft

ver tb agente comercial (↑ agente), centro comercial (↑ centro), galería, etc

2 ‹película/arte› commercial

( AmL)

commercial, advert ( BrE)

(tienda): [ S ] Comercial Hernández Hernandez's Stores

B (CS) ( Educ) business school

* * *

a) ‹zona/operación/carta› business ( before n);

◊ una firma comercial a company;

b) ‹película/arte› commercial

a) ( anuncio) commercial, advert (BrE)

b) (CS) (Educ) business school

* * *

♦ adj

1. [de empresas] commercial;

relaciones comerciales trade relations;

aviación comercial civil aviation;

política comercial trade policy;

gestión comercial business management

2. [que se vende bien] commercial;

una película muy comercial a very commercial film

♦ nmf

♦ nm

* * *

I adj commercial; de negocios business atr ;

el déficit comercial the trade deficit

II m/f representative

III m L.Am. ( anuncio) commercial

* * *

comercial adj & nm

: commercial

♦ comercialmente adv

* * *

comercial¹ adj commercial

comercial² n salesman [pl. salesmen] / saleswoman [pl. saleswomen]

1 to require.

Ellos requieren un auto They require a car.

Ella requiere amor She demands love.

La necesidad demanda proceder Need requires proceeding.

2 to demand.

3 to order (law).

4 to summon.

El juez requirió al demandado The judge summoned the defendant.

5 to require to, to need to.

Ella requiere firmar She requires to sign.

6 to take.

Requiere tiempo It requires time to things correctly.

7 to page, to call out for, to call.

Ellos requieren a María They page Mary.

8 to want.

9 to call to.

This situation calls to act rapidly Esta situación requiere actuar rápido.

* * *

Conjugation model [ HERVIR], like link=hervir hervir

► verbo transitivo

1 (necesitar) to require, need

■ esto requiere gran paciencia this requires a lot of patience

2 (decir con autoridad) to demand, call for

3 (solicitar) to request

■ requirió nuestra ayuda he asked for our help

4 (persuadir) to persuade

■ nos requirió con elocuencia he persuaded us eloquently

5 DERECHO to summon

\

requerir de amores literal to court, woo

* * *

1. VT

1) (=necesitar) to need, require

2) (=solicitar) to request, ask

3) (=llamar) to send for, summon frm

4) †† (=requebrar) (tb: requerir de amores) to court, woo

* * *

verbo transitivo

1) ( necesitar) to require

2) < documento> to require; < persona> to summon

* * *

= have + calls for, call for, call on/upon, cry for, demand, involve, make + demand, require, elicit, requisition.

Ex. For some while there have been calls for an abbreviated version of AACR, for small libraries and for non-cataloguers.

Ex. The main rules call for entry of societies under name and institutions under place.

Ex. The difference is only that an indexer is not usually called upon to appreciate the subtleties of the subject to the same extent as an abstractor.

Ex. However, this work still cries for expansion, and it must also become more systematic.

Ex. The other part of the picture reveals title indexes to be only crude subject indexes, which for effective use demand imagination and searching skills on the part of the user.

Ex. Generating author indexes or catalogues involves creating headings from author's names, that is the names of persons or organisations.

Ex. Also, informative abstracts make greater demands upon appreciation of subject content than indicative abstracts.

Ex. The condition approach should require less enumeration of rules for different types of materials, and therefore should require fewer rules.

Ex. This article looks at ways in which librarians in leadership roles can elicit the motivation, commitment, and personal investment of members of the organisation.

Ex. More specialised titles are requisitioned through interlending.

----

* requerir atención = require + consideration, require + attention.

* requerir más destreza = be more of an art.

* * *

verbo transitivo

1) ( necesitar) to require

2) < documento> to require; < persona> to summon

* * *

* * *

requerir [ I11 ]

A (necesitar) to require

éstos son los precios de los productos que requieren these are the prices of the products you require

requiere mucha paciencia it calls for o requires o demands o needs a great deal of patience

una enfermedad que requirió su hospitalización an illness which necessitated o required her hospitalization

[ S ] se requiere buena presencia good appearance essential

B ‹documento› to require; ‹persona› to summon

el juez requirió su presencia como testigo the judge summoned him to appear as a witness

fue requerido de pago he was ordered to pay

* * *

a) ( necesitar) to require

b) ‹ documento› to require;

* * *

requerir vt

1. [necesitar] to require;

es un asunto que requiere mucha diplomacia it is a matter which requires a great deal of tact;

se requieren conocimientos de francés a knowledge of French is essential

2. [ordenar]

3. Der to order;

el juez requirió la extradición del terrorista the judge ordered the extradition of the terrorist

* * *

1 ( necesitar) require

2 JUR summons

* * *

requerir {76} vt

1) : to require, to call for

2) : to summon, to send for

* * *

requerir vb to require

1 to need.

necesito que me lo digas I need you to tell me

esta planta necesita que la rieguen this plant needs watering

se necesita camarero waiter wanted (en letrero)

se necesita ser ignorante para no saber eso you'd have to be an ignoramus not to know that

Ella necesita un medicamento She needs medication.

2 to need to, to require to, to must.

Ella necesita saber eso She needs to know that.

3 to call for, to occasion, to justify.

La situación necesita asesoría The situation calls for consultancy.

* * *

► verbo transitivo

1 to need

\

'Se necesita chico' "Boy wanted"

* * *

1) to need

2) require

* * *

VT to need

* * *

verbo transitivo to need

* * *

= cry for, demand, involve, necessitate, need, require, take, stand in + need of, use up.

Ex. However, this work still cries for expansion, and it must also become more systematic.

Ex. The other part of the picture reveals title indexes to be only crude subject indexes, which for effective use demand imagination and searching skills on the part of the user.

Ex. Generating author indexes or catalogues involves creating headings from author's names, that is the names of persons or organisations.

Ex. Although this is generally successful, this approach does necessitate the consultation of two chapters.

Ex. Equally, various trade directories and other lists need to list and organise names in a form that will enable a searcher to find information about an organisation or person.

Ex. The condition approach should require less enumeration of rules for different types of materials, and therefore should require fewer rules.

Ex. A common standard serial interface is the RS232C which takes a 24-pin plug and is commonly used to connect many peripherals including printers and modems.

Ex. 'At no time in history', according to Geoffrey Langley, 'did people of all types and classes stand more in need of information'.

Ex. Plug-in programs have grown widely, they add functionality to a WWW browser but also use up drive storage space or conflict with other types of programs.

----

* a medida que se necesite = on demand, on request, as required.

* cuando lo necesite = at + Posesivo + time of need.

* justo lo que se necesita = just the ticket, that's the ticket!.

* necesitar Algo desesperadamente = be in dire need (of), be in desperate need of.

* necesitar Algo urgentemente = be in dire need (of), be in desperate need of.

* necesitar atención = beg + attention, warrant + attention.

* necesitar esfuerzo = take + effort.

* necesitar gafas para leer = need + reading glasses.

* necesitar imaginación = take + imagination.

* necesitar reparación = be in need of repair.

* necesitarse = it + take.

* necesitarse desesperadamente = be desperately needed.

* necesitar ser un genio = call for + nothing less than genius.

* necesitarse tener en cuenta = need + consideration.

* necesitar tomar cierto tipo de decisiones = require + judgement, require + judgement, require + an exercise of + judgement.

* necesitar urgentemente = cry out for, sorely + need.

* no necesitar mantenimiento = maintenance-free.

* que necesita bastante dedicación de personal = staff-intensive [staff intensive].

* que necesita bastante mano de obra = labour-intensive [labour intensive].

* que necesita la información = information-dependent.

* que se necesita urgentemente = sorely needed.

* según se necesite = on demand, on request, at need, as required, pro re nata.

* ser justo lo que se necesita = be just the thing, be just the ticket, be just the job.

* ser justo lo que Uno necesita = be (right) up + Posesivo + alley.

* si se necesita = if need be.

* tener lo que se necesita = have + what it takes.

* * *

verbo transitivo to need

* * *

* * *

necesitar [A1 ]

to need

si necesitas algo, llámame if you need anything, call me

se necesitan cuatro personas para levantarlo it takes four people to lift it

estos geranios necesitan agua these geraniums need watering

[ S ] se necesita chófer driver required

me pidió dinero — se necesita ¿eh? ( fam); he asked me for money — what a nerve! ( colloq)

necesitar + INF to need to + INF

necesito verte hoy I need to see you today

no necesito comprarlo hoy I don't need to o I don't have to buy it today, I needn't buy it today, there's no need for me to buy it today

se necesita ser ingenuo para creerse eso ( fam); you'd have to be naive to believe that

necesita que alguien le eche una mano she needs someone to give her a hand

( frml) necesitar DE algo to need sth

necesitamos de la cooperación de todos we need everyone's cooperation

* * *

◊ necesito verte hoy I need to see you today

* * *

♦ vt

to need;

necesito llamarla cuanto antes I need to call her as soon as possible;

necesito que me lo digas I need you to tell me;

esta planta necesita que la rieguen this plant needs watering;

se necesita camarero [en letrero] waiter wanted;

se necesita ser ignorante para no saber eso you'd have to be an ignoramus not to know that

♦ vi

necesitar de to need, to have need of;

necesitamos de tu ayuda we need your help

* * *

v/t need;

necesito hablarte I need to talk to you

* * *

necesitar vt

1) : to need

2) : to necessitate, to require

necesitar vi

necesitar de : to have need of

* * *

necesitar vb to need

* * *

f 1. < Börse> move; 2. <Geschäft, V&M> measure ■ Maßnahmen ergreifen 1. < Geschäft> take measures, take action, take steps; 2. < Mgmnt> take action; 3. < Recht> take measures ■ Maßnahmen ergreifen gegen < Geschäft> counteract, take action against, take measures against ■ Maßnahmen treffen gegen < Geschäft> provide against, take action against, take measures against

* * *

 

сброс нагрузки
Защитное отключение нагрузки
[Интент]

EN

load shedding
emergency disconnection of customer loads to preserve the power network operation. This removes overloads and arrests consequent frequency decline without disrupting the utility transmission grid.
[IEC 61968-2, ed. 1.0 (2003-11)]

load shedding
When the supplying company receives more demand for electrical power than its generating or transmission or installed capacity can deliver, the company has to resort to rationing of the available electricity to its customers. This act is called load shedding.
Load shedding can also be referred to as Demand Side Management or Load Management
[ http://wiki.answers.com]

На блоках с гидрогенераторами для предотвращения повышения напряжения при сбросах нагрузки должна быть предусмотрена защита от повышения напряжения.

[ПУЭ]

Тематики

• выключатель автоматический
• электроснабжение в целом

Классификация

>>>

Синонимы

• аварийное отключение нагрузки

EN

• dropping of load
• emergency load shedding
• emergency load-shedding
• load drop
• load dropping
• load rejection
• load shed
• load shedding
• load-off
• load-shedding
• trip-out

3.47 сброс нагрузки (load rejection): Внезапная потеря или существенное снижение нагрузки системы, вызывающее резкое увеличение частоты вращения турбины, и вступление в работу устройств ограничения величины параметров (защиты турбины) для предотвращения недопустимой раскрутки.

Источник: ГОСТ Р 52527-2006: Установки газотурбинные. Надежность, готовность, эксплуатационная технологичность и безопасность оригинал документа

1) Aviation: demand pulse generator

2) Medicine: pulse generator, pulser

3) Engineering: impulse generator, impulse oscillator, impulser, pulse oscillator, pulsed oscillator, surge generator

4) Telecommunications: pulse-generated circuit

5) Physics: pulsed-power driver

6) Electronics: pulsar

7) Automation: pulse-generating circuit

8) Makarov: pulse oscillator (источник колебаний, генерирующий под воздействием собственных или внешних импульсов)

9) Electrical engineering: generator

SUBJECT AREA: Electricity, Electronics and information technology, Public utilities

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After attending Owens College, Manchester, Hopkinson was admitted to Trinity College, Cambridge, in 1867 to read for the Mathematical Tripos. An appointment in 1872 with the lighthouse department of the Chance Optical Works in Birmingham directed his attention to electrical engineering. His most noteworthy contribution to lighthouse engineering was an optical system to produce flashing lights that distinguished between individual beacons. His extensive researches on the dielectric properties of glass were recognized when he was elected to a Fellowship of the Royal Society at the age of 29. Moving to London in 1877 he became established as a consulting engineer at a time when electricity supply was about to begin on a commercial scale. During the remainder of his life, Hopkinson's researches resulted in fundamental contributions to electrical engineering practice, dynamo design and alternating current machine theory. In making a critical study of the Edison dynamo he developed the principle of the magnetic circuit, a concept also arrived at by Gisbert Kapp around the same time. Hopkinson's improvement of the Edison dynamo by reducing the length of the field magnets almost doubled its output. In 1890, in addition to-his consulting practice, Hopkinson accepted a post as the first Professor of Electrical Engineering and Head of the Siemens laboratory recently established at King's College, London. Although he was not involved in lecturing, the position gave him the necessary facilities and staff and student assistance to continue his researches. Hopkinson was consulted on many proposals for electric traction and electricity supply, including schemes in London, Manchester, Liverpool and Leeds. He also advised Mather and Platt when they were acting as contractors for the locomotives and generating plant for the City and South London tube railway. As early as 1882 he considered that an ideal method of charging for the supply of electricity should be based on a two-part tariff, with a charge related to maximum demand together with a charge for energy supplied. Hopkinson was one the foremost expert witnesses of his day in patent actions and was himself the patentee of over forty inventions, of which the three-wire system of distribution and the series-parallel connection of traction motors were his most successful. Jointly with his brother Edward, John Hopkinson communicated the outcome of his investigations to the Royal Society in a paper entitled "Dynamo Electric Machinery" in 1886. In this he also described the later widely used "back to back" test for determining the characteristics of two identical machines. His interest in electrical machines led him to more fundamental research on magnetic materials, including the phenomenon of recalescence and the disappearance of magnetism at a well-defined temperature. For his work on the magnetic properties of iron, in 1890 he was awarded the Royal Society Royal Medal. He was a member of the Alpine Club and a pioneer of rock climbing in Britain; he died, together with three of his children, in a climbing accident.

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SUBJECT AREA: Electricity, Ports and shipping, Public utilities

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Mavor came from a distinguished Scottish family with connections in medicine, industry and the arts. On completion of his education at Glasgow University, he joined R.J.Crompton \& Co.; then in 1883, along with William C.Muir, he established the Glasgow firm which later became well known as Mavor and Coulson. It pioneered the supply of electricity to public undertakings and equipped the first two generating stations in Scotland. Mavor and his fellow directors appreciated the potential demand by industry in Glasgow for electricity. Two industries were especially well served; first, the coal-mines, where electric lighting and power transformed efficiency and safety beyond recognition; and second, marine engineering. Here Mavor recognized the importance of the variable-speed motor in working with marine propellers which have a tighter range of efficient working speeds. In 1911 he built a 50 ft (15 m) motor launch, appropriately named Electric Arc, at Dumbarton and fitted it with an alternating-current motor driven by a petrol engine and dynamo. Within two years British shipyards were building electrically powered ships, and by the beginning of the First World War the United States Navy had a 20,000-ton collier with this new form of propulsion.

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SUBJECT AREA: Land transport, Railways and locomotives

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Robert Stephenson's father was George Stephenson, who ensured that his son was educated to obtain the theoretical knowledge he lacked himself. In 1821 Robert Stephenson assisted his father in his survey of the Stockton \& Darlington Railway and in 1822 he assisted William James in the first survey of the Liverpool \& Manchester Railway. He then went to Edinburgh University for six months, and the following year Robert Stephenson \& Co. was named after him as Managing Partner when it was formed by himself, his father and others. The firm was to build stationary engines, locomotives and railway rolling stock; in its early years it also built paper-making machinery and did general engineering.

In 1824, however, Robert Stephenson accepted, perhaps in reaction to an excess of parental control, an invitation by a group of London speculators called the Colombian Mining Association to lead an expedition to South America to use steam power to reopen gold and silver mines. He subsequently visited North America before returning to England in 1827 to rejoin his father as an equal and again take charge of Robert Stephenson \& Co. There he set about altering the design of steam locomotives to improve both their riding and their steam-generating capacity. Lancashire Witch, completed in July 1828, was the first locomotive mounted on steel springs and had twin furnace tubes through the boiler to produce a large heating surface. Later that year Robert Stephenson \& Co. supplied the Stockton \& Darlington Railway with a wagon, mounted for the first time on springs and with outside bearings. It was to be the prototype of the standard British railway wagon. Between April and September 1829 Robert Stephenson built, not without difficulty, a multi-tubular boiler, as suggested by Henry Booth to George Stephenson, and incorporated it into the locomotive Rocket which the three men entered in the Liverpool \& Manchester Railway's Rainhill Trials in October. Rocket, was outstandingly successful and demonstrated that the long-distance steam railway was practicable.

Robert Stephenson continued to develop the locomotive. Northumbrian, built in 1830, had for the first time, a smokebox at the front of the boiler and also the firebox built integrally with the rear of the boiler. Then in Planet, built later the same year, he adopted a layout for the working parts used earlier by steam road-coach pioneer Goldsworthy Gurney, placing the cylinders, for the first time, in a nearly horizontal position beneath the smokebox, with the connecting rods driving a cranked axle. He had evolved the definitive form for the steam locomotive.

Also in 1830, Robert Stephenson surveyed the London \& Birmingham Railway, which was authorized by Act of Parliament in 1833. Stephenson became Engineer for construction of the 112-mile (180 km) railway, probably at that date the greatest task ever undertaken in of civil engineering. In this he was greatly assisted by G.P.Bidder, who as a child prodigy had been known as "The Calculating Boy", and the two men were to be associated in many subsequent projects. On the London \& Birmingham Railway there were long and deep cuttings to be excavated and difficult tunnels to be bored, notoriously at Kilsby. The line was opened in 1838.

In 1837 Stephenson provided facilities for W.F. Cooke to make an experimental electrictelegraph installation at London Euston. The directors of the London \& Birmingham Railway company, however, did not accept his recommendation that they should adopt the electric telegraph and it was left to I.K. Brunel to instigate the first permanent installation, alongside the Great Western Railway. After Cooke formed the Electric Telegraph Company, Stephenson became a shareholder and was Chairman during 1857–8.

Earlier, in the 1830s, Robert Stephenson assisted his father in advising on railways in Belgium and came to be increasingly in demand as a consultant. In 1840, however, he was almost ruined financially as a result of the collapse of the Stanhope \& Tyne Rail Road; in return for acting as Engineer-in-Chief he had unwisely accepted shares, with unlimited liability, instead of a fee.

During the late 1840s Stephenson's greatest achievements were the design and construction of four great bridges, as part of railways for which he was responsible. The High Level Bridge over the Tyne at Newcastle and the Royal Border Bridge over the Tweed at Berwick were the links needed to complete the East Coast Route from London to Scotland. For the Chester \& Holyhead Railway to cross the Menai Strait, a bridge with spans as long-as 460 ft (140 m) was needed: Stephenson designed them as wrought-iron tubes of rectangular cross-section, through which the trains would pass, and eventually joined the spans together into a tube 1,511 ft (460 m) long from shore to shore. Extensive testing was done beforehand by shipbuilder William Fairbairn to prove the method, and as a preliminary it was first used for a 400 ft (122 m) span bridge at Conway.

In 1847 Robert Stephenson was elected MP for Whitby, a position he held until his death, and he was one of the exhibition commissioners for the Great Exhibition of 1851. In the early 1850s he was Engineer-in-Chief for the Norwegian Trunk Railway, the first railway in Norway, and he also built the Alexandria \& Cairo Railway, the first railway in Africa. This included two tubular bridges with the railway running on top of the tubes. The railway was extended to Suez in 1858 and for several years provided a link in the route from Britain to India, until superseded by the Suez Canal, which Stephenson had opposed in Parliament. The greatest of all his tubular bridges was the Victoria Bridge across the River St Lawrence at Montreal: after inspecting the site in 1852 he was appointed Engineer-in-Chief for the bridge, which was 1 1/2 miles (2 km) long and was designed in his London offices. Sadly he, like Brunel, died young from self-imposed overwork, before the bridge was completed in 1859.

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See also: Pihl, Carl Abraham; Seguin, Marc