Political parties and leaders: Radical Free Democratic Party

(Freisinnig-Demokratische Partei der Schweiz or FDP, Parti

Radical-Democratique Suisse or PRD, Partitio Liberal-Radicale

Party (Sozialdemokratische Partei der Schweiz or SPS, Parti

Socialist Suisse or PSS, Partito Socialista Svizzero or PSS, Partida

Christian Democratic People's Party (Christichdemokratische

Volkspartei der Schweiz or CVP, Parti Democrate-Chretien Suisse or

PDC, Partito Democratico-Cristiano Popolare Svizzero or PDC, Partida

president]; Swiss People's Party (Schweizerische Volkspartei or SVP,

Union Democratique du Centre or UDC, Unione Democratica de Centro or

Green Party (Grune Partei der Schweiz or Grune, Parti Ecologiste

Suisse or Les Verts, Partito Ecologista Svizzero or I Verdi, Partida

(Landesring der Unabhaengigen or LdU, Alliance des Independants or

Party (Schweizer Demokraten or SD, Democrates Suisses or DS,

Democratici Svizzeri or DS), Liberal Party (Liberale Partei der

Schweiz or LPS, Parti Liberal Suisse or PLS, Partito Liberale

Svizzero or PLS), Workers' Party (Parti Suisse du Travail or PST,

Partei der Arbeit der Schweiz or PdAdS, Partito Svizzero del Lavoro

or PSdL), Evangelical People's Party (Evangelische Volkspartei der

Schweiz or EVP, Parti Evangelique Suisse or PEV, Partito Evangelico

Svizzero or PEV), and the Union of Federal Democrats

(Eidgenossisch-Demokratische Union or EDU, Union Democratique

Federale or UDF, Unione Democratica Federale or UDF)

International organization participation: ACCT, AfDB, AsDB,

Australia Group, BIS, CCC, CE, CERN, EAPC, EBRD, ECE, EFTA, ESA,

FAO, G-10, IADB, IAEA, IBRD, ICAO, ICC, ICFTU, ICRM, IDA, IEA, IFAD,

IFC, IFRCS, ILO, IMF, IMO, Inmarsat, Intelsat, Interpol, IOC, IOM,

ISO, ITU, LAIA (observer), MTCR, NAM (guest), NEA, NSG, OAS

(observer), OECD, OSCE, PCA, PFP, UN (observer), UNCTAD, UNESCO,

UNHCR, UNIDO, UNITAR, UNMIBH, UNMOP, UNMOT, UNOMIG, UNPREDEP, UNTSO,

UNU, UPU, WCL, WHO, WIPO, WMO, WToO, WTrO, ZC

Diplomatic representation in the US:

chief of mission: Ambassador Alfred DEFAGO

chancery: 2900 Cathedral Avenue NW, Washington, DC 20008

consulate(s) general: Atlanta, Chicago, Houston, Los Angeles, New

York, and San Francisco

Diplomatic representation from the US:

chief of mission: Ambassador Madeleine May KUNIN

embassy: Jubilaeumstrasse 93, 3005 Bern

mailing address: use embassy street address

Flag description: red square with a bold, equilateral white cross

in the center that does not extend to the edges of the flag

Economy

Economy--overview: Switzerland, a fundamentally prosperous and

stable modern economy with a per capita GDP 15%-20% above that of

the big West European economies, experienced an export-driven upturn

in its economy in 1998. The downturn in the global economy, however,

will have a cooling effect on the 1998 boom in the Swiss export

sector, including financial services, biotechnology,

pharmaceuticals, and special-purpose machines. A major downturn in

the Swiss economy should still be avoided, as consumer and capital

spending have picked up and will keep the economy moving in 1999.

GDP growth in 1999 is expected to come in around 1.4%. The growing

political and economic union of Europe suggests that Switzerland's

time-honored neutral separation is becoming increasingly obsolete.

Thus, when the surrounding trade partners launched the euro on 1

January 1999, their firms began prodding Swiss exporters and

importers to keep their accounts in euros.

GDP: purchasing power parity--$191.8 billion (1998 est.)

GDP--real growth rate: 2% (1998 est.)

GDP--per capita: purchasing power parity?$26,400 (1998 est.)

GDP--composition by sector:

agriculture: 2.8%

industry: 31.1%

services: 66.1% (1995)

Population below poverty line: NA%

Household income or consumption by percentage share:

lowest 10%: 2.9%

highest 10%: 28.6% (1982)

Inflation rate (consumer prices): 0% (1998)

Labor force: 3.8 million (850,000 foreign workers, mostly Italian)

Labor force--by occupation: services 67%, manufacturing and

construction 29%, agriculture and forestry 4% (1995)

Unemployment rate: 3.6% (1998 est.)

Budget:

revenues: $32.66 billion

expenditures: $34.89 billion, including capital expenditures of $2.3

billion (1998 est.)

Industries: machinery, chemicals, watches, textiles, precision

instruments

Industrial production growth rate: 6% (1998 est.)

Electricity--production: 54.815 billion kWh (1996)

Electricity--production by source:

fossil fuel: 3.99%

hydro: 52.73%

nuclear: 43.27%

other: 0.01% (1996)

Electricity--consumption: 53.765 billion kWh (1996)

Electricity--exports: 24.2 billion kWh (1996)

Electricity--imports: 23.15 billion kWh (1996)

Agriculture--products: grains, fruits, vegetables; meat, eggs

Exports: $94.4 billion (f.o.b., 1998)

Exports--commodities: machinery 29%, chemicals 28%, metals,

watches, agricultural products (1997)

Exports--partners: EU 61% (Germany 23%, France 9%, Italy 8%, UK

6%, Austria 3%), US 10%, Japan 4% (1997)

Imports: $95.5 billion (f.o.b., 1998)

Imports--commodities: machinery 22%, chemicals 16%, vehicles,

metals, agricultural products, textiles (1997)

Imports--partners: EU 79% (Germany 32%, France 12%, Italy 10%,

Netherlands 5%, UK 5%),, US 7%, Japan 3% (1997)

Debt--external: $NA

Economic aid--donor: ODA, $1.1 billion (1995)

Currency: 1 Swiss franc, franken, or franco (SFR) = 100 centimes,

rappen, or centesimi

Exchange rates: Swiss francs, franken, or franchi (SFR) per

US$1--1.3837 (January 1999), 1.4498 (1998), 1.4513 (1997), 1.2360

(1996), 1.1825 (1995), 1.3677 (1994)

Fiscal year: calendar year

Communications

Telephones: 5.24 million (1996 est.); 307,000 cellular telephone

subscribers (1994 est.)

Telephone system: excellent domestic and international services

domestic: extensive cable and microwave radio relay networks

international: satellite earth stations--2 Intelsat (Atlantic Ocean

and Indian Ocean)

Radio broadcast stations: AM 7, FM 50, shortwave 1 (1997)

Radios: 2.8 million (1996)

Television broadcast stations: 108 (1997)

Televisions: 2.647 million licenses (1996)

Transportation

Railways:

total: 4,479 km (1,564 km double track)

standard gauge: 3,304 km 1.435-m gauge (3,288 km electrified)

narrow gauge: 1,165 km 1.000-m gauge (1,057 km electrified); 10 km

0.750-m or 0.800-m gauge (1996)

Highways:

total: 71,048 km (including 1,613 km of expressways)

paved: NA km

unpaved: NA km (1997 est.)

Waterways: 65 km; Rhine (Basel to Rheinfelden, Schaffhausen to

Bodensee); 12 navigable lakes

Pipelines: crude oil 314 km; natural gas 1,506 km

Ports and harbors: Basel

Merchant marine:

total: 20 ships (1,000 GRT or over) totaling 412,459 GRT/724,995 DWT

ships by type: bulk 13, cargo 1, chemical tanker 5, oil tanker 1

(1998 est.)

Airports: 67 (1998 est.)

Airports--with paved runways:

total: 42

over 3,047 m: 3

2,438 to 3,047 m: 5

1,524 to 2,437 m: 12

914 to 1,523 m: 7

under 914 m: 15 (1998 est.)

Airports--with unpaved runways:

total: 25

under 914 m: 25 (1998 est.)

Military

Military branches: Army, Air Force, Frontier Guards,

Fortification Guards

Military manpower--military age: 20 years of age

Military manpower--availability:

males age 15-49: 1,867,290 (1999 est.)

Military manpower--fit for military service:

males age 15-49: 1,592,696 (1999 est.)

Military manpower--reaching military age annually:

males: 41,204 (1999 est.)

Military expenditures--dollar figure: $3.1 billion (1999)

Military expenditures--percent of GDP: 1.2% (1999)

Transnational Issues

Disputes--international: none

Illicit drugs: because of more stringent government regulations,

used significantly less as a money-laundering center; transit

country for and consumer of South American cocaine and Southwest

Asian heroin

======================================================================

@Syria

-----

Geography

Location: Middle East, bordering the Mediterranean Sea, between

Lebanon and Turkey

Geographic coordinates: 35 00 N, 38 00 E

Map references: Middle East

Area:

total: 185,180 sq km

land: 184,050 sq km

water: 1,130 sq km

note: includes 1,295 sq km of Israeli-occupied territory

Area--comparative: slightly larger than North Dakota

Land boundaries:

total: 2,253 km

border countries: Iraq 605 km, Israel 76 km, Jordan 375 km, Lebanon

375 km, Turkey 822 km

Coastline: 193 km

Maritime claims:

contiguous zone: 41 nm

territorial sea: 35 nm

Climate: mostly desert; hot, dry, sunny summers (June to August)

and mild, rainy winters (December to February) along coast; cold

weather with snow or sleet periodically hitting Damascus

Terrain: primarily semiarid and desert plateau; narrow coastal

plain; mountains in west

Elevation extremes:

lowest point: unnamed location near Lake Tiberias -200 m

highest point: Mount Hermon 2,814 m

Natural resources: petroleum, phosphates, chrome and manganese

ores, asphalt, iron ore, rock salt, marble, gypsum

Land use:

arable land: 28%

permanent crops: 4%

permanent pastures: 43%

forests and woodland: 3%

other: 22% (1993 est.)

Irrigated land: 9,060 sq km (1993 est.)

Natural hazards: dust storms, sandstorms

Environment--current issues: deforestation; overgrazing; soil

erosion; desertification; water pollution from dumping of raw sewage

and wastes from petroleum refining; inadequate supplies of potable

water

Environment--international agreements:

party to: Biodiversity, Climate Change, Desertification, Hazardous

Wastes, Nuclear Test Ban, Ozone Layer Protection, Ship Pollution

signed, but not ratified: Environmental Modification

Geography--note: there are 42 Israeli settlements and civilian

land use sites in the Israeli-occupied Golan Heights (August 1998

est.)

People

Population: 17,213,871 (July 1999 est.)

note: in addition, there are about 37,200 people living in the

Israeli-occupied Golan Heights--18,200 Arabs (16,500 Druze and 1,700

Alawites) and about 19,000 Israeli settlers (August 1998 est.)

Age structure:

0-14 years: 46% (male 4,032,620; female 3,840,431)

15-64 years: 51% (male 4,515,274; female 4,322,415)

65 years and over: 3% (male 246,812; female 256,319) (1999 est.)

Population growth rate: 3.15% (1999 est.)

Birth rate: 36.95 births/1,000 population (1999 est.)

Death rate: 5.4 deaths/1,000 population (1999 est.)

Net migration rate: 0 migrant(s)/1,000 population (1999 est.)

Sex ratio:

at birth: 1.05 male(s)/female

under 15 years: 1.05 male(s)/female

15-64 years: 1.04 male(s)/female

65 years and over: 0.96 male(s)/female

total population: 1.04 male(s)/female (1999 est.)

Infant mortality rate: 36.42 deaths/1,000 live births (1999 est.)

Life expectancy at birth:

total population: 68.09 years

male: 66.75 years

female: 69.48 years (1999 est.)

Total fertility rate: 5.37 children born/woman (1999 est.)

Nationality:

noun: Syrian(s)

adjective: Syrian

Ethnic groups: Arab 90.3%, Kurds, Armenians, and other 9.7%

Religions: Sunni Muslim 74%, Alawite, Druze, and other Muslim

sects 16%, Christian (various sects) 10%, Jewish (tiny communities

in Damascus, Al Qamishli, and Aleppo)

Languages: Arabic (official); Kurdish, Armenian, Aramaic,

Circassian widely understood; French, English somewhat understood

Literacy:

definition: age 15 and over can read and write

total population: 70.8%

male: 85.7%

female: 55.8% (1997 est.)

Government

Country name:

conventional long form: Syrian Arab Republic

conventional short form: Syria

local long form: Al Jumhuriyah al Arabiyah as Suriyah

local short form: Suriyah

former: United Arab Republic (with Egypt)

Data code: SY

Government type: republic under military regime since March 1963

Capital: Damascus

Administrative divisions: 14 provinces (muhafazat,

singular--muhafazah); Al Hasakah, Al Ladhiqiyah, Al Qunaytirah, Ar

Raqqah, As Suwayda', Dar'a, Dayr az Zawr, Dimashq, Halab, Hamah,

Hims, Idlib, Rif Dimashq, Tartus

Independence: 17 April 1946 (from League of Nations mandate under

French administration)

National holiday: National Day, 17 April (1946)

Constitution: 13 March 1973

Legal system: based on Islamic law and civil law system; special

religious courts; has not accepted compulsory ICJ jurisdiction

Suffrage: 18 years of age; universal

Executive branch:

chief of state: President Hafiz al-ASAD (since 22 February 1971);

note--President ASAD seized power in the November 1970 coup, assumed

presidential powers 22 February 1971, and was confirmed as president

in the 12 March 1971 national elections; Vice Presidents 'Abd

al-Halim ibn Said KHADDAM (since 11 March 1984) and Muhammad Zuhayr

MASHARIQA (since 11 March 1984)

head of government: Prime Minister Mahmud ZUBI (since 1 November

1987), Deputy Prime Ministers Lt. Gen. Mustafa TALAS (since 11 March

1984), Dr. Salim YASIN (since NA December 1981), and Rashid

AKHTARINI (since 4 July 1992)

cabinet: Council of Ministers appointed by the president

elections: president elected by popular vote for a seven-year term;

referendum/election last held 8 February 1999 (next to be held NA

2006); vice presidents appointed by the president; prime minister

and deputy prime ministers appointed by the president

election results: Hafiz al-ASAD reelected president; percent of

vote--Hafiz al-ASAD 99%

Legislative branch: unicameral People's Council or Majlis

al-shaab (250 seats; members elected by popular vote to serve

four-year terms)

elections: last held 30 November-1 December 1998 (next to be held NA

2002)

election results: percent of vote by party--NPF 67%, non-NPF 33%;

seats by party--NPF 167, independents 83; note--the constitution

guarantees that the Ba'th Party (part of the NPF alliance) receive

one-half of the seats

Judicial branch: Supreme Constitutional Court, justices are

appointed for four-year terms by the president; High Judicial

Council; Court of Cassation; State Security Courts

Political parties and leaders:

National Progressive Front (NPF) includes: the ruling Arab Socialist

secretary general of the party, and chairman of the National

Political pressure groups and leaders: non-Ba'th parties have

little effective political influence; Communist party ineffective;

conservative religious leaders; Muslim Brotherhood (operates in

exile in Jordan and Yemen)

International organization participation: ABEDA, AFESD, AL, AMF,

CAEU, CCC, ESCWA, FAO, G-24, G-77, IAEA, IBRD, ICAO, ICC, ICRM, IDA,

IDB, IFAD, IFC, IFRCS, IHO, ILO, IMF, IMO, Intelsat, Interpol, IOC,

ISO, ITU, NAM, OAPEC, OIC, UN, UNCTAD, UNESCO, UNIDO, UNRWA, UPU,

WFTU, WHO, WMO, WToO

Diplomatic representation in the US:

chief of mission: Ambassador Walid MUALEM

chancery: 2215 Wyoming Avenue NW, Washington, DC 20008

Diplomatic representation from the US:

chief of mission: Ambassador Ryan CROCKER

embassy: Abou Roumaneh, Al-Mansur Street, No. 2, Damascus

mailing address: P. O. Box 29, Damascus

Flag description: three equal horizontal bands of red (top),

white, and black with two small green five-pointed stars in a

horizontal line centered in the white band; similar to the flag of

Yemen, which has a plain white band and of Iraq, which has three

green stars (plus an Arabic inscription) in a horizontal line

centered in the white band; also similar to the flag of Egypt, which

has a symbolic eagle centered in the white band

Economy

Economy--overview: Syria's predominantly statist economy is on a

shaky footing because of Damascus's failure to implement extensive

economic reform. The dominant agricultural sector remains

underdeveloped, with roughly 80% of agricultural land still

dependent on rain-fed sources. Although Syria has sufficient water

supplies in the aggregate at normal levels of precipitation, the

great distance between major water supplies and population centers

poses serious distribution problems. The water problem is

exacerbated by rapid population growth, industrial expansion, and

increased water pollution. Private investment is critical to the

modernization of the agricultural, energy, and export sectors. Oil

production is leveling off, and the efforts of the nonoil sector to

penetrate international markets have fallen short. Syria's

inadequate infrastructure, outmoded technological base, and weak

educational system make it vulnerable to future shocks and hamper

competition with neighbors such as Jordan and Israel.

GDP: purchasing power parity--$41.7 billion (1998 est.)

GDP--real growth rate: 2% (1998 est.)

GDP--per capita: purchasing power parity?$2,500 (1998 est.)

GDP--composition by sector:

agriculture: 26%

industry: 21%

services: 53% (1997)

Population below poverty line: 15%-25%

Household income or consumption by percentage share:

lowest 10%: NA%

highest 10%: NA%

Inflation rate (consumer prices): 15%-20% (1997 est.)

Labor force: 4.7 million (1998 est.)

Labor force--by occupation: services 40%, agriculture 40%,

industry 20% (1996 est.)

Unemployment rate: 12%-15% (1998 est.)

Budget:

revenues: $3.5 billion

expenditures: $4.2 billion, including capital expenditures of $NA

(1997 est.)

Industries: petroleum, textiles, food processing, beverages,

tobacco, phosphate rock mining

Industrial production growth rate: 0.2% (1996 est.)

Electricity--production: 19.3 billion kWh (1996)

Electricity--production by source:

fossil fuel: 63.73%

hydro: 36.27%

nuclear: 0%

other: 0% (1996)

Electricity--consumption: 19.3 billion kWh (1996)

Electricity--exports: 0 kWh (1996)

Electricity--imports: 0 kWh (1996)

Agriculture--products: wheat, barley, cotton, lentils, chickpeas,

olives, sugar beets; beef, mutton, eggs, poultry, milk

Exports: $4.2 billion (f.o.b., 1998 est.)

Exports--commodities: petroleum 65%, textiles 16%, food and live

animals 13%, manufactures 6% (1997 est.)

Exports--partners: Italy 18%, Germany 13%, France 12%, Turkey 10%,

Lebanon 7%, Spain 6% (1997 est.)

Imports: $5.7 billion (c.i.f., 1997)

Imports--commodities: machinery and equipment 40%,

foodstuffs/animals 15%, metal and metal products 15%, textiles 10%,

chemicals 10%, consumer goods 5% (1997 est.)

Imports--partners: Ukraine 14%, Italy 7%, Germany 6%, Turkey 5%,

France 4%, South Korea 4%, Japan 4%, US 3% (1997 est.)

Debt--external: $22 billion (1998 est.)

Economic aid--recipient: $327.3 million (1995)

Currency: 1 Syrian pound (LS) = 100 piastres

Exchange rates: Syrian pounds (LS) per US$1--46 (1998), 41.9

(January 1997); official fixed rate 11.225

Fiscal year: calendar year

Communications

Telephones: 541,465 (1992 est.)

Telephone system: fair system currently undergoing significant

improvement and digital upgrades, including fiber-optic technology

domestic: coaxial cable and microwave radio relay network

international: satellite earth stations--1 Intelsat (Indian Ocean)

and 1 Intersputnik (Atlantic Ocean region); 1 submarine cable;

coaxial cable and microwave radio relay to Iraq, Jordan, Lebanon,

and Turkey; participant in Medarabtel

Radio broadcast stations: AM 9, FM 1, shortwave 0

Radios: 3.392 million (1992 est.)

Television broadcast stations: 54 (of which 36 are low-power

stations and repeaters) (1997)

Televisions: 700,000 (1993 est.)

Transportation

Railways:

total: 1,998 km

broad gauge: 1,766 km 1.435-m gauge

narrow gauge: 232 km 1.050-m gauge

Highways:

total: 41,451 km

paved: 9,575 km (including 877 km of expressways)

unpaved: 31,876 km (1997 est.)

Waterways: 870 km; minimal economic importance

Pipelines: crude oil 1,304 km; petroleum products 515 km

Ports and harbors: Baniyas, Jablah, Latakia, Tartus

Merchant marine:

total: 131 ships (1,000 GRT or over) totaling 401,407 GRT/578,081 DWT

ships by type: bulk 11, cargo 115, livestock carrier 4,

roll-on/roll-off cargo 1 (1998 est.)

Airports: 104 (1998 est.)

Airports--with paved runways:

total: 24

over 3,047 m: 5

2,438 to 3,047 m: 16

914 to 1,523 m: 1

under 914 m: 2 (1998 est.)

Airports--with unpaved runways:

total: 80

1,524 to 2,437 m: 3

914 to 1,523 m: 14

under 914 m: 63 (1998 est.)

Heliports: 2 (1998 est.)

Military

Military branches: Syrian Arab Army, Syrian Arab Navy, Syrian

Arab Air Force, Syrian Arab Air Defense Forces, Police and Security

Force

Military manpower--military age: 19 years of age

Military manpower--availability:

males age 15-49: 4,060,995 (1999 est.)

Military manpower--fit for military service:

males age 15-49: 2,271,539 (1999 est.)

Military manpower--reaching military age annually:

males: 188,546 (1999 est.)

Military expenditures--dollar figure: $800 million-$1 billion

(1997 est.); note--based on official budget data that understate

actual spending

Military expenditures--percent of GDP: 8% (1995 est.)

Transnational Issues

Disputes--international: Golan Heights is Israeli occupied;

dispute with upstream riparian Turkey over Turkish water development

plans for the Tigris and Euphrates Rivers; Syrian troops in

northern, central, and eastern Lebanon since October 1976

Illicit drugs: a transit point for opiates and hashish bound for

regional and Western markets

======================================================================

@Taiwan

------

Introduction

Background: In 1895, military defeat forced China to cede Taiwan

to Japan, however it reverted to Chinese control after World War II.

Following the Communist victory on the mainland in 1949, 2 million

Nationalists fled to Taiwan and established a government that over

five decades has gradually democratized and incorporated native

Taiwanese within its structure. Throughout this period, the island

has prospered as one of East Asia's economic tigers. The dominant

political issue continues to be the relationship between Taiwan and

Mainland China and the question of eventual reunification.

Geography

Location: Eastern Asia, islands bordering the East China Sea,

Philippine Sea, South China Sea, and Taiwan Strait, north of the

Philippines, off the southeastern coast of China

Geographic coordinates: 23 30 N, 121 00 E

Map references: Southeast Asia

Area:

total: 35,980 sq km

land: 32,260 sq km

water: 3,720 sq km

note: includes the Pescadores, Matsu, and Quemoy

Area--comparative: slightly smaller than Maryland and Delaware

combined

Land boundaries: 0 km

Coastline: 1,448 km

Maritime claims:

exclusive economic zone: 200 nm

territorial sea: 12 nm

Climate: tropical; marine; rainy season during southwest monsoon

(June to August); cloudiness is persistent and extensive all year

Terrain: eastern two-thirds mostly rugged mountains; flat to

gently rolling plains in west

Elevation extremes:

lowest point: South China Sea 0 m

highest point: Yu Shan 3,997 m

Natural resources: small deposits of coal, natural gas,

limestone, marble, and asbestos

Land use:

arable land: 24%

permanent crops: 1%

permanent pastures: 5%

forests and woodland: 55%

other: 15%

Irrigated land: NA sq km

Natural hazards: earthquakes and typhoons

Environment--current issues: air pollution; water pollution from

industrial emissions, raw sewage; contamination of drinking water

supplies; trade in endangered species; low-level radioactive waste

disposal

Environment--international agreements:

party to: none of the selected agreements

signed, but not ratified: none of the selected agreements

People

Population: 22,113,250 (July 1999 est.)

Age structure:

0-14 years: 22% (male 2,515,398; female 2,338,506)

15-64 years: 70% (male 7,825,953; female 7,574,836)

65 years and over: 8% (male 989,040; female 869,517) (1999 est.)

Population growth rate: 0.93% (1999 est.)

Birth rate: 14.63 births/1,000 population (1999 est.)

Death rate: 5.32 deaths/1,000 population (1999 est.)

Net migration rate: -0.02 migrant(s)/1,000 population (1999 est.)

The 1999 CIA World Factbook · 第 110 / 133 段