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Willem Jacob Luyten

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Willem Jacob Luyten (March 7, 1899 – November 21, 1994) was a Dutch-American astronomer .

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114-599: Jacob Luyten was born in Semarang , Java , at the time part of the Dutch East Indies . His mother was Cornelia M. Francken and his father Jacob Luyten, a teacher of French. At the age of 11 he observed Halley's Comet , which started his fascination with astronomy. He also had a knack for languages, and eventually could speak nine. In 1912 his family moved back to the Netherlands where he studied astronomy at

228-531: A special autonomous status ( otonomi khusus ) from the central government. Aceh, a conservative Islamic territory , has the right to create some aspects of an independent legal system implementing sharia . Yogyakarta is the only pre-colonial monarchy legally recognised within Indonesia, with the positions of governor and vice governor being prioritised for the reigning Sultan of Yogyakarta and Duke of Pakualaman , respectively. The six Papuan provinces are

342-462: A dividing line ( Wallace Line ) between the distribution of Indonesia's Asian and Australasian species. It runs roughly north–south along the edge of the Sunda Shelf, between Kalimantan and Sulawesi, and along the deep Lombok Strait , between Lombok and Bali. Flora and fauna on the west of the line are generally Asian, while east from Lombok is increasingly Australian until the tipping point at

456-541: A generator of urban economic growth. After the departure of Herman Willem Daendels , Napoleonic governor of Java, the Dutch reorganized Java into Residencies , and Semarang became the seat of the new Semarang Residency in 1817. An important influence on urban growth was the Great Mail Road project in the 1847, which connected all the cities in the northern coast of Central and East Java and positioned Semarang as

570-720: A legislature ( DPRD Kabupaten/Kota ). The third level are the districts ( kecamatan , distrik in Papua , or kapanewon and kemantren in Yogyakarta ), and the fourth are the villages (either desa , kelurahan , kampung , nagari in West Sumatra , or gampong in Aceh ). The village is the lowest level of government administration. It is divided into several community groups ( rukun warga , RW), which are further divided into neighbourhood groups ( rukun tetangga , RT). In Java,

684-487: A longer term target to further increase the coverage of its marine protected areas to 10% of its territorial waters, or 31 million hectares. Indonesia is a republic with a presidential system. Following the fall of the New Order in 1998, political and governmental structures have undergone sweeping reforms, with four constitutional amendments revamping the executive, legislative and judicial branches. Chief among them

798-435: A majority of the council to support its development. Changing tack, Tillema then worked to improve the existing kampongs in the city's malarial districts by improving drainage and providing more sanitary public toilets and public housing. A decade later, the town approved Thomas Karsten 's revised plan for the area, using it to build larger villas for the Dutch and wealthy Chinese and Javanese rather than allowing its use by

912-432: A pious Muslim area called Kauman , a Chinese quarter, and a Dutch fortress. The fortress has a pentagonal form with only one gate in the south and five monitoring towers to protect the Dutch settlement from rebellion actions, segregating the spaces between Dutch settlement and other areas. In fact, the city of Semarang was only referred to the Dutch quarter while the other ethnic settlement were considered as villages outside

1026-485: A press bureau in the Netherlands, Indonesisch Pers-bureau . Fossilised remains of Homo erectus , popularly known as the " Java Man ", suggest the Indonesian archipelago was inhabited two million to 500,000 years ago. Homo sapiens reached the region around 43,000 BCE. Austronesian peoples , who form the majority of the modern population, migrated to Southeast Asia from what is now Taiwan. They arrived in

1140-478: A range of sea and coastal ecosystems, including beaches , dunes, estuaries, mangroves, coral reefs, seagrass beds, coastal mudflats, tidal flats, algal beds, and small island ecosystems. Indonesia is one of the Coral Triangle countries with the world's most enormous diversity of coral reef fish , with more than 1,650 species in eastern Indonesia only. British naturalist Alfred Russel Wallace described

1254-464: A series of northern Java mountain ranges that stretch from Banten to East Java. The hilly area in the city of Semarang is known as the upper city (Semarang Dhuwur). This hilly region is also the upstream area of the big rivers that flow in the city of Semarang. The upper city area is also near Mount Ungaran . Semarang features a tropical monsoon climate ( Köppen : Am ). The city features distinctly wetter and drier months, with June through August being

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1368-836: A vital financial contribution to Indonesia due to the growing trade and industry and services. As a consequence, people's purchasing power increased, capital inflows, consumer confidence, and doing business indexes were relatively conducive to the development of several CBDs such as Simpang Lima City Center (SLCC) , Pemuda Central Business District (PCBD) , and Gajahmada Golden Triangle (GGT) . Major Indonesian and international financial and banking sectors alikes such as Bank Mandiri , BCA , BNI , BRI , Panin Bank , HSBC , Bank Permata , Standard Chartered , RaboBank , Citibank, DBS , UOB, OCBC NISP , KEB Hana Bank , CIMB Niaga , and Maybank have regional offices in Semarang. The western part of

1482-520: A wealth of Asian fauna. Large species such as the Sumatran tiger , rhinoceros, orangutan, Asian elephant , and leopard were once abundant as far east as Bali, but numbers and distribution have dwindled drastically. Having been long separated from the continental landmasses, Sulawesi, Nusa Tenggara, and Maluku have developed their unique flora and fauna. Papua was part of the Australian landmass and

1596-481: Is Islam with a significant Christian minority. Religion in Semarang 2023 Semarang has a large Chinese community. As in other regions of Java, especially in Central Java, they have mingled closely with the local population and use Javanese in communication for hundreds of years. About 3.5% of the city's population is ethnic Chinese, many residing in a Chinatown in the vicinity of Gang Pinggir. The Chinatown

1710-569: Is US$ 15,835, while nominal per capita GDP is US$ 5,108. Services are the economy's largest sector and account for 43.4% of GDP (2018), followed by industry (39.7%) and agriculture (12.8%). Since 2009, it has employed more people than other sectors, accounting for 47.7% of the total labour force, followed by agriculture (30.2%) and industry (21.9%). Over time, the structure of the economy has changed considerably. Historically, it has been weighted heavily towards agriculture, reflecting both its stage of economic development and government policies in

1824-475: Is a city that has a unique topographic condition in the form of a narrow lowland area and hilly areas extending from the west side to the east side of Semarang City. The city is located about 558 km (347 miles) east of Jakarta and 312 km (194 miles) west of Surabaya. Lowland areas in Semarang City are very narrow. The lowland area in western Semarang only has a width of 4 km (2.5 miles) from

1938-649: Is a founding member of the Association of Southeast Asian Nations ( ASEAN ) and the East Asia Summit . In common with most of the Muslim world , Indonesia does not have diplomatic relations with Israel and has actively supported Palestine . However, observers have pointed out that Indonesia has ties with Israel, albeit discreetly. Indonesia has been a member of the United Nations since 1950 and

2052-404: Is believed to have caused a global volcanic winter and cooling of the climate and subsequently led to a genetic bottleneck in human evolution, though this is still in debate. The 1815 eruption of Mount Tambora and the 1883 eruption of Krakatoa were among the largest in recorded history. The former caused 92,000 deaths and created an umbrella of volcanic ash that spread and blanketed parts of

2166-500: Is called "Kampong Pecinan Semawis" and expresses many aspects of traditional Chinese culture including foods, rituals, and houses of worship. Ethnic Groups in Semarang As the capital city of Central Java, and fifth largest city of Indonesia, the economy of Semarang is quite large. Semarang has transformed and changed dynamically towards a better direction. In a period of less than 10 years, Semarang Metropolitan continues to build

2280-532: Is connected to Solo by Semarang–Solo Toll Road . Semarang's largest bus terminals are Mangkang and Terboyo. The primary means of public transportation is by minibus, called " bis ". Ojek ( motorcycle taxis ), Angkot ( share-taxi ) micro-buses, taxi-cabs plays vital role in public transportation of the city. Go-Jek and Grab have online taxi and Ojek services. Semarang is served by bus rapid transit called Trans Semarang , which operates in six routes. Perum DAMRI also serves in six designated routes in

2394-540: Is constructing Semarang River at Banjir Kanal Barat (Garang River) near Karangayu Bridge. In the middle of July 2011, gardens in river banks and some traditional boats are available to use. The project will be finished in 2013 with river gardens, trotoars, garden lighting, water activities, art sites, sport sites and balconies and stairs for sightseeing. In August 2011, a 421 m (1,380 ft) tunnel dodger at Kreo river has been finished and Jatibarang Dam construction can begin, with completion targeted for July 2013. The dam

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2508-536: Is elected for a five-year term, as are the party-aligned members of the DPR and the non-partisan DPD. Beginning with the 2015 local elections , elections for governors and mayors have occurred on the same date. In 2014, the Constitutional Court ruled that legislative and presidential elections would be held simultaneously, starting in 2019. Indonesia has several levels of subdivisions. The first level are

2622-403: Is generally below average in both regional and global context. Indonesia has one of the world's fastest deforestation rates. In 2020, forests covered approximately 49.1% of the country's land area, down from 87% in 1950. Since the 1970s, log production, various plantations and agriculture have been responsible for much of the deforestation in Indonesia . Most recently, it has been driven by

2736-754: Is highly unstable, making it a site of numerous volcanoes and frequent earthquakes. It lies on the Pacific Ring of Fire , where the Indo-Australian Plate and the Pacific Plate are pushed under the Eurasian Plate , where they melt at about 100 kilometres (62 miles) deep. A string of volcanoes runs through Sumatra, Java , Bali and Nusa Tenggara , and then to the Banda Islands of Maluku to northeastern Sulawesi . Of

2850-495: Is home to a unique fauna and flora closely related to that of Australia, including over 600 bird species. Indonesia is second only to Australia in terms of total endemic species, with 36% of its 1,531 species of bird and 39% of its 515 species of mammal being endemic. Indonesia harbours 83% of Southeast Asia's old-growth forest , and the highest amount of forest carbon in the region. Tropical seas surround Indonesia's 80,000 kilometres (50,000 miles) of coastline. The country has

2964-419: Is known as the lower town (Semarang Ngisor), as well as the center of the city's economic activity. Under these conditions, the lower city area is often hit by annual flooding and its peak during the rainy season. In a number of regions, especially North Semarang, floods are sometimes also caused by overflowing sea tides (tidal floods). The hilly area in Semarang stretches on the south side. These hills are part of

3078-430: Is located on the northern coast of Java. The city of Semarang is one of the most important cities located on the north coast of Java and is the main hub connecting Jakarta and Surabaya , and cities in the southern interior of Java Surakarta and Yogyakarta . Semarang City has a height ranging from 2 m (6.6 ft) below sea level up to 340 m (1,120 ft) above sea level with a slope of 0%–45%. Semarang City

3192-473: Is planned to release 230 m /s (8,100 cu ft/s) of flood water and will generate 1.5 MW of electricity, provide a drinking water resource and a boost to tourism. The largest ethnic group in Semarang is the Javanese , followed by minorities of Chinese, Arabs , Indian , and others (including local ethnicities such as Sundanese , Batak , Madura , Malay , Balinese etc.). The dominant religion

3306-502: Is served by a number of operators including AirAsia , Citilink , Batik Air , Garuda Indonesia , and Lion Air which provide services to Jakarta , Bali , Kuala Lumpur , and Singapore . In 2018, the airport terminal was relocated to a new and much larger site; the old terminal continues to be used for government and military flights. The main seaport is the Tanjung Mas seaport. Indonesia Indonesia , officially

3420-563: Is some policy recognition of OECMs but no national mechanism for reporting them. There are 55 national parks in Indonesia, of which 9 are predominantly marine . Of these 6 are World Heritage Sites , such as the Tropical Rainforest Heritage of Sumatra that includes three parks. Seven national parks are part of the World Network of Biosphere Reserves and 5 are wetlands of international importance under

3534-644: Is still an important regional center and port today. The city has been named as the cleanest tourist destination in Southeast Asia by the ASEAN Clean Tourist City Standard (ACTCS) for 2020–2022. It has an area of 373.78 km (144.32 sq mi) and had a population of 1,555,984 at the 2010 census and 1,653,524 at the 2020 census, making it Indonesia's ninth most populous city after Jakarta , Surabaya , Bekasi , Bandung , Medan , Depok , Tangerang and Palembang ;

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3648-555: Is the delegation of power and authority to various regional entities while remaining a unitary state . The President of Indonesia is the head of state and head of government , commander-in-chief of the Indonesian National Armed Forces ( Tentara Nasional Indonesia , TNI), and the director of domestic governance, policy-making, and foreign affairs. The president may serve a maximum of two consecutive five-year terms. The highest representative body at

3762-498: Is the world's fourth-most-populous country and the most populous Muslim-majority country . Java, the world's most populous island , is home to more than half of the country's population. Indonesia is a presidential republic with an elected legislature . It has 38 provinces , of which nine have special autonomous status . The country's largest city, Jakarta , is the world's second-most-populous urban area . Indonesia shares land borders with Papua New Guinea , East Timor , and

3876-426: The 2006 Yogyakarta earthquake . Indonesia's size, tropical climate, and archipelagic geography support one of the world's highest levels of biodiversity , and it is among the 17 megadiverse countries identified by Conservation International . Its flora and fauna are a mixture of Asian and Australasian species. The Sunda Shelf islands (Sumatra, Java, Borneo, and Bali) were once linked to mainland Asia and have

3990-639: The Army (TNI–AD), Navy (TNI–AL, which includes Marine Corps ), and Air Force (TNI–AU). The army has about 400,000 active-duty personnel. Defence spending in the national budget was 0.7% of gross domestic product (GDP) in 2018, with controversial involvement of military-owned commercial interests and foundations. The Armed Forces were formed during the Indonesian National Revolution when it undertook guerrilla warfare along with informal militia. Since then, territorial lines have formed

4104-495: The Bali myna , Sumatran orangutan , and Javan rhinoceros . Some academics describe the deforestation and other environmental destruction in the country as an ecocide . As of 2023, the government of Indonesia has gazetted 21.3% of the country's land as protected areas , with the intention of developing a new protected area strategy in line with global post-2020 framework . The country also has 411 marine reserves , or 9% of

4218-601: The British and Dutch military completely. Semarang city administration is headed by mayor, with a legislative assembly. Both mayor and the 50 members of legislative assembly are elected by direct vote. The government of Semarang City had implemented the smart city concept since 2013. Juridically, Semarang City is a municipality (second level area) consisting of 16 districts ( kecamatan ), which are again divided into 177 urban villages ( kelurahan ). The districts are tabulated below with their areas and their populations at

4332-611: The Constitutional Court ( Mahkamah Konstitusi ) which listens to constitutional and political matters, and the Religious Court ( Pengadilan Agama ), which deals with codified Islamic Personal Law ( sharia ) cases. Additionally, the Judicial Commission ( Komisi Yudisial ) monitors the performance of judges. Since 1999, Indonesia has had a multi-party system. In all legislative elections since

4446-471: The Consumer Price Index have contributed to strong economic growth in recent years. From 2007 to 2019, annual growth accelerated to between 4% and 6% due to improvements in the banking sector and domestic consumption, helping Indonesia weather the 2008–2009 Great Recession , and regain in 2011 the investment grade rating it had lost in 1997. As of 2019 , 9.41% of the population lived below

4560-566: The Dutch East India Company (VOC) as a part of a debt payment. In 1682, the Semarang state was founded by the Dutch colonial power. On 5 October 1705 after years of occupations, Semarang officially became a VOC city when Susuhunan Pakubuwono I made a deal to give extensive trade rights to the VOC in exchange of wiping out Mataram 's debt. The VOC, and later, the Dutch East Indies government, established tobacco plantations in

4674-617: The Japanese invasion and occupation ended Dutch rule and encouraged the independence movement. Two days after the surrender of Japan in August 1945, influential nationalist leaders Sukarno and Mohammad Hatta issued the Proclamation of Indonesian Independence . Sukarno, Hatta, and Sutan Sjahrir were appointed president, vice-president, and prime minister, respectively. The Netherlands attempted to re-establish their rule. In

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4788-538: The Maluku Islands . Dutch and British traders followed. In 1602, the Dutch established the Dutch East India Company ( Verenigde Oostindische Compagnie ; VOC) and became the dominant European power for almost 200 years. The VOC was dissolved in 1799 following bankruptcy, and the Netherlands established the Dutch East Indies as a nationalised colony. For most of the colonial period , Dutch control over

4902-512: The Organisation of Islamic Cooperation . The name Indonesia derives from the Greek words Indos ( Ἰνδός ) and nesos ( νῆσος ), meaning "Indian islands". The name dates back to the 19th century, far predating the formation of independent Indonesia. In 1850, George Windsor Earl , an English ethnologist , proposed the terms Indunesians —and, his preference, Malayunesians —for

5016-556: The Prosperous Justice Party (PKS). The first general election was held in 1955 to elect members of the DPR and the Constitutional Assembly ( Konstituante ). The most recent elections in 2019 resulted in nine political parties in the DPR, with a parliamentary threshold of 4% of the national vote. At the national level, Indonesians did not elect a president until 2004. Since then, the president

5130-529: The Ramsar convention . Around 9% of the Indonesia surface are national parks. As of 2012 Indonesia had over 100 marine protected areas covering an area of 15.7 million ha, of which 32 where managed by the Ministry of Forestry while the rest where managed by local governments. In 2009 the president Susilo Bambang Yudhoyono declared a target of reaching 20 million hectares by 2020. In 2010 Indonesia also set out

5244-598: The Republic of Indonesia , is a country in Southeast Asia and Oceania , between the Indian and Pacific oceans. It consists of over 17,000 islands , including Sumatra , Java , Sulawesi , and parts of Borneo and New Guinea . Indonesia is the world's largest archipelagic state and the 14th-largest country by area , at 1,904,569 square kilometres (735,358 square miles). With over 280 million people, Indonesia

5358-661: The UNHRC have raised the issue of human rights abuses committed by Indonesian troops in Papua such as extrajudicial killings and forced disappearances. Past engagements of the army include the conflict against the Netherlands over the Dutch New Guinea , the opposition to the British -sponsored creation of Malaysia (" Konfrontasi "), the mass killings of the Indonesian Communist Party (PKI), and

5472-867: The University of Amsterdam , receiving his BA in 1918. He was the first student to earn his PhD (at the age of 22) with Ejnar Hertzsprung at Leiden University . In 1921 he left for the United States where he first worked at the Lick Observatory . From 1923 to 1930 Luyten worked at the Harvard College Observatory eventually working at the observatory's Bloemfontein station. He spent the years 1928–1930 in Bloemfontein , South Africa, where he met Willemina H. Miedema and married her on February 5, 1930. Upon his return to

5586-489: The Weber Line . In his 1869 book, The Malay Archipelago , Wallace described numerous species unique to the area. The region of islands between his line and New Guinea is now termed Wallacea . Indonesia's large and growing population and rapid industrialisation present serious environmental issues . They are often given a lower priority due to high poverty levels and weak, under-resourced governance. Problems include

5700-489: The eastern part of Malaysia , as well as maritime borders with Singapore , Peninsular Malaysia , Vietnam , Thailand , the Philippines , Australia , Palau , and India . Despite its large population and densely populated regions, Indonesia has vast areas of wilderness that support one of the world's highest levels of biodiversity . The Indonesian archipelago has been a valuable region for trade since at least

5814-618: The invasion of East Timor , the latter having been Indonesia's most massive military operation. Indonesia has a mixed economy in which the private sector and government play vital roles. As the only G20 member state in Southeast Asia, the country has the largest economy in the region and is classified as a newly industrialised country . Per a 2023 estimate, it is the world's 16th largest economy by nominal GDP and 7th in terms of GDP at PPP , estimated to be US$ 1.417 trillion and US$ 4.393 trillion, respectively. Per capita GDP in PPP

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5928-436: The palm oil industry, which has been criticised for its environmental impact and displacement of local communities. The situation has made Indonesia the world's largest forest-based emitter of greenhouse gases. It also threatens the survival of indigenous and endemic species. The International Union for Conservation of Nature (IUCN) identified 140 species of mammals as threatened and 15 as critically endangered, including

6042-436: The provinces , which have a legislature ( Dewan Perwakilan Rakyat Daerah , DPRD) and an elected governor . A total of 38 provinces have been established from the original eight in 1945, the most recent change being the split of Southwest Papua from the province of West Papua in 2022. The second level are the regencies ( kabupaten ) and cities ( kota ), led by regents ( bupati ) and mayors ( walikota ), respectively, and

6156-410: The tropical rainforest climate found on every large island of Indonesia. Cooler climate types exist in mountainous regions that are 1,300 to 1,500 metres (4,300 to 4,900 feet) above sea level. The oceanic climate (Köppen Cfb ) prevails in highland areas adjacent to rainforest climates, with uniform precipitation year-round. In highland areas near the tropical monsoon and tropical savanna climates ,

6270-413: The 1950s and 1960s to promote agricultural self-sufficiency. A gradual process of industrialisation and urbanisation began in the late 1960s and accelerated in the 1980s as falling oil prices saw the government focus on diversifying away from oil exports and towards manufactured exports. This development continued throughout the 1980s and into the next decade despite the 1990 oil price shock , during which

6384-1238: The 2010 census and 2020 census, together with the official estimates as at mid 2023. The table also includes the number and names of the urban administrative villages in each district. ( Javanese : ꦩꦶꦗꦺꦤ꧀ , romanized:  Mijèn ) ( Javanese : ꦒꦸꦤꦸꦁ​ꦥꦛꦶ , romanized:  Gunungpathi ) ( Javanese : ꦧꦚꦸꦩꦤꦶꦏ꧀ , romanized:  Banyumanik ) ( Javanese : ꦒꦗꦃꦩꦸꦁ​ꦏꦸꦂ , romanized:  Gajah Mungkur ) ( Javanese : ꦱꦼꦩꦫꦁ​​ꦏꦶꦢꦸꦭ꧀ , romanized:  Sěmarang Kidul ( Javanese : ꦕꦤ꧀ꦝꦶꦱꦫꦶ , romanized:  Candhisari ) ( Javanese : ꦠꦼꦩ꧀ꦧꦭꦁ , romanized:  Tĕmbalang ) ( Javanese : ꦥꦼꦢꦸꦫꦸꦔꦤ꧀ , romanized:  Pědurungan ) ( Javanese : ꦒꦼꦤꦸꦏ꧀ , romanized:  Genuk ) ( Javanese : ꦒꦪꦩ꧀ꦱꦫꦶ , romanized:  Gayamsari ) ( Javanese : ꦱꦼꦩꦫꦁ​​ꦮꦺꦠꦤ꧀ , romanized:  Sěmarang Wétan ) ( Javanese : ꦱꦼꦩꦫꦁ​​ꦭꦺꦴꦂ , romanized:  Sěmarang Lor ) ( Javanese : ꦱꦼꦩꦫꦁ​​ꦩꦢꦾ , romanized:  Sěmarang Madyå ) ( Javanese : ꦱꦼꦩꦫꦁ​​ꦏꦸꦭꦺꦴꦤ꧀ , romanized:  Sěmarang Kulon ) ( Javanese : ꦠꦸꦒꦸ , romanized:  Tugu ) ( Javanese : ꦔꦭꦶꦪꦤ꧀ , romanized:  Ngaliyan ) Semarang

6498-411: The 400 volcanoes, around 130 are active. Between 1972 and 1991, there were 29 volcanic eruptions, mostly on Java. Volcanic ash has made agricultural conditions unpredictable in some areas. However, it has also resulted in fertile soils, a factor in historically sustaining the high population densities of Java and Bali. A massive supervolcano erupted at present-day Lake Toba around 70,000 BCE. It

6612-487: The 9th century, when it was known as Bergota. At the end of the 15th century, appointed by the demak sultanate an islamic scholar named Ki Ageng Pandan Arang  [ id ] founded a village and an Islamic school in this fishing village. On 2 May 1547, Sultan Hadiwijaya of Pajang declared Pandan Arang as the first bupati (mayor) of Semarang, thus creating Semarang administratively and politically. In 1678, Sunan Amangkurat II promised to give control of Semarang to

6726-580: The Cold War. Numerous attempts by the United States and the Soviet Union , and China to some degree, culminated in the 1965 coup attempt and subsequent upheaval that led to a reorientation of foreign policy. Quiet alignment with the Western world while maintaining a non-aligned stance has characterised Indonesia's foreign policy since then. Today, it maintains close relations with its neighbours and

6840-561: The East ( de Oost ); and Insulinde . After 1900, Indonesia became more common in academic circles outside the Netherlands, and native nationalist groups adopted it for political expression. Adolf Bastian of the University of Berlin popularized the name through his book Indonesien oder die Inseln des Malayischen Archipels, 1884–1894 . The first native scholar to use the name was Ki Hajar Dewantara when in 1913, he established

6954-544: The GDP rose at an average rate of 7.1%. As a result, the official poverty rate fell from 60% to 15%. Trade barriers reduction from the mid-1980s made the economy more globally integrated. The growth ended with the 1997 Asian financial crisis that severely impacted the economy, including a 13.1% real GDP contraction in 1998 and a 78% inflation. The economy reached its low point in mid-1999 with only 0.8% real GDP growth. Relatively steady inflation and an increase in GDP deflator and

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7068-521: The Philippines, Palau, and Australia. At 4,884 metres (16,024 ft), Puncak Jaya is Indonesia's highest peak, and Lake Toba in Sumatra is the largest lake, with an area of 1,145 km (442 sq mi). Indonesia's largest rivers are in Kalimantan and New Guinea and include Kapuas , Barito , Mamberamo , Sepik and Mahakam . They serve as communication and transport links between

7182-600: The Spice Islands of Maluku during the Age of Discovery . Following three and a half centuries of Dutch colonialism , Indonesia secured its independence after World War II . Indonesia's history has since been turbulent, with challenges posed by natural disasters, corruption, separatism, a democratisation process, and periods of rapid economic growth. Indonesia consists of thousands of distinct native ethnic groups and hundreds of linguistic groups, with Javanese being

7296-491: The UN) scattered over both sides of the equator, around 6,000 of which are inhabited. The largest are Sumatra , Java , Borneo (shared with Brunei and Malaysia), Sulawesi , and New Guinea (shared with Papua New Guinea). Indonesia shares land borders with Malaysia on Borneo and Sebatik , Papua New Guinea on the island of New Guinea, East Timor on the island of Timor , and maritime borders with Singapore, Malaysia, Vietnam,

7410-461: The United States in 1931, he taught at the University of Minnesota from 1931–1967, then served as astronomer emeritus from 1967 until his death. Luyten studied the proper motions of stars and discovered many white dwarfs . He also discovered some of the Sun's nearest neighbors, including Luyten's Star as well as the high–proper motion star system Luyten 726-8 , which was soon found to contain

7524-470: The archipelago and made much of the Northern Hemisphere without summer in 1816 . The latter produced the loudest sound in recorded history and caused 36,000 deaths due to the eruption itself and the resulting tsunamis, with significant additional effects around the world years after the event. Recent catastrophic disasters due to seismic activity include the 2004 Indian Ocean earthquake and

7638-560: The archipelago around 2,000 BCE and confined the native Melanesians to the far eastern regions as they spread east. Ideal agricultural conditions and the mastering of wet-field rice cultivation as early as the eighth century BCE allowed villages, towns, and small kingdoms to flourish by the first century CE. The archipelago's strategic sea-lane position fostered inter-island and international trade, including with Indian kingdoms and Chinese dynasties, from several centuries BCE. Trade has since fundamentally shaped Indonesian history. From

7752-571: The archipelago was tenuous. Dutch forces were engaged continuously in quelling rebellions on and off Java. The influence of local leaders such as Prince Diponegoro in central Java, Imam Bonjol in central Sumatra, Pattimura in Maluku , and the Aceh War weakened the Dutch and tied up the colonial military forces. Only in the early 20th century did Dutch dominance extend to what was to become Indonesia's current boundaries. During World War II,

7866-406: The area was used for rice cultivation and the only small improvement was the development of a surrounding fortress. Although less developed, Semarang is a fairly well organized city, in which urban activities were concentrated along the river and the settlement is linked to a market where different ethnic groups met to trade. The existence of the market, in the later years, become a primary element and

7980-476: The basis of all TNI branches' structure, aimed at maintaining domestic stability and deterring foreign threats. The military has possessed a strong political influence since its founding, which peaked during the New Order . Political reforms in 1998 included the removal of the TNI's formal representation from the legislature. Nevertheless, its political influence remains, albeit at a reduced level. Since independence,

8094-578: The beginning of the Indonesian National Revolution , the Dutch recognised Indonesian independence in the face of international pressure in December 1949, following the Dutch–Indonesian Round Table Conference . Despite political, social, and sectarian divisions, Indonesians found unity in their fight for independence. As president, Sukarno moved Indonesia from democracy towards authoritarianism and maintained power by balancing

8208-552: The city boundary. The city, known as de Europeesche Buurt, was built in classical European style with church located in the centre, wide boulevards, streets and villas. According to Purwanto (2005), the urban and architectural form of this settlement is very similar to the design principles applied in many Dutch cities. Due to the long and costly Java War, there was not much funding from the Dutch East Indies government, and this affected Semarang's development. Most land in

8322-419: The city had doubled in size and expanded to the south by the 1920s, creating a nucleus of a metropolis where multi-ethnic groups lived and traded in the city. The villages in the suburbs such as Jomblang and Jatingaleh steadily became the satellite towns of Semarang, more populated with a bigger market area. Before the invasion of Japan in 1942, Semarang had already become the capital of Central Java province, as

8436-566: The city has many industrial parks and factories. Like other metropolitan cities within Indonesia, due to a developing economy and increasing income, Semarang has many shopping malls. Semarang is on the Indonesian National Route 1 road, which connects it to Merak and Ketapang ( Banyuwangi ). Indonesian National Route 14 toward Bawen starts here. Semarang has a toll road, the Semarang Toll Road . The city

8550-677: The city in the 1870s. Hospitals, churches, hotels, and mansions were built along the new main roads of Mataram Street, Bojongscheweg, and Pontjolscheweg. The Javanese quarters of town known as kampongs grew increasingly densely populated, reaching as many as 1000 inhabitants per hectare and degrading living conditions. Mortality remained high into the early 20th century, with newcomers, overcrowding, and poor hygiene triggering cholera and tuberculous outbreaks. Dysentery , typhoid , and malaria were also rife. The city doctor Willem T. de Vogel advocated strenuously for reducing overcrowding and improving living conditions by extending Semarang into

8664-581: The city. Semarang was connected to Surakarta (Solo) by a rail line in 1870. At present there are two large train stations in Semarang: Semarang Poncol and Semarang Tawang . Semarang is connected to Bandung , Jakarta , and Surabaya by inter-city train services. Kedungsepur commuter rail connects Semarang Poncol Station eastward to Ngrombo Station in Grobogan Regency . Semarang's Ahmad Yani International Airport

8778-467: The coastline, while in the eastern Semarang, the low-lying area has a width of 11 km (6.8 miles) from the coastline. This lowland area is a flood plain from the large rivers that flow in Semarang City, such as Kali Garang (West Flood Canal), Pengkol River, and Bringin River. This low-lying area stretches on the northern side of Semarang and covers almost 40% of the total area of Semarang. This lowland area

8892-499: The country hardest hit by the 1997 Asian financial crisis . It brought out popular discontent with the New Order's corruption and suppression of political opposition and ultimately ended Suharto's presidency. In 1999, East Timor seceded from Indonesia, following its 1975 invasion by Indonesia and a 25-year occupation marked by international condemnation of human rights abuses . Since 1998, democratic processes have been strengthened by enhancing regional autonomy and instituting

9006-456: The country has struggled to maintain unity against local insurgencies and separatist movements. Some, notably in Aceh and Papua , have led to an armed conflict and subsequent allegations of human rights abuses and brutality from all sides. The former was resolved peacefully in 2005, while the latter has continued amid a significant, albeit imperfect, implementation of regional autonomy laws. Reports from Amnesty , Human Rights Watch , and

9120-497: The country's first direct presidential election in 2004 . Political, economic and social instability, corruption, and instances of terrorism remained problems in the 2000s; however, the economy has performed strongly since 2007. Although relations among the diverse population are mostly harmonious, acute sectarian discontent and violence remain problematic in some areas. A political settlement to an armed separatist conflict in Aceh

9234-415: The country's total maritime area, and has set a target to increase this to 30% by 2045. However, a 2023 study suggested this target is not on track and that existing marine reserves are poorly managed. Around 390 marine areas are managed in some way by government bodies, communities, and other sectors, with potential for these to be considered other effective area-based conservation measures (OECMs). There

9348-432: The destruction of peatlands, large-scale illegal deforestation (causing extensive haze across parts of Southeast Asia ), over-exploitation of marine resources, air pollution, garbage management, and reliable water and wastewater services . These issues contribute to Indonesia's low ranking (number 116 out of 180 countries) in the 2020 Environmental Performance Index . The report also indicates that Indonesia's performance

9462-539: The dominant religion in Java and Sumatra by the end of the 16th century. For the most part, Islam overlaid and mixed with existing cultural and religious influences, which shaped the predominant form of Islam in Indonesia, particularly in Java. The first Europeans arrived in the archipelago in 1512, when Portuguese traders, led by Francisco Serrão , sought to monopolise the sources of nutmeg , cloves , and cubeb pepper in

9576-437: The driest months. However, the average monthly rainfall does not fall below 60 mm (2.4 in), hence the tropical rainforest categorization. Semarang on average sees approximately 2,800 mm (110 in) of rain annually. Average temperatures in the city are relatively consistent, hovering around 28 °C (82 °F). Diurnal temperature variation slightly increases in the dry season. Like Singapore River, Semarang

9690-651: The executive branch. Reforms since 1998 have markedly increased its role in national governance, while the DPD is a new chamber for matters of regional management. Most civil disputes appear before the State Court ( Pengadilan Negeri ); appeals are heard before the High Court ( Pengadilan Tinggi ). The Supreme Court of Indonesia ( Mahkamah Agung ) is the highest level of the judicial branch and hears final cessation appeals and conducts case reviews. Other courts include

9804-728: The fall of the New Order , no political party has won an overall majority of seats. The Indonesian Democratic Party of Struggle (PDI-P) secured the most votes in the 2024 general election , becoming their third consecutive wins since 2014. Other notable parties include the Party of the Functional Groups ( Golkar ), the Great Indonesia Movement Party ( Gerindra ), the Democratic Party , and

9918-438: The frequency of drought and food shortages (with an impact on precipitation and the patterns of wet and dry seasons, and thus Indonesia's agriculture system ) as well as numerous diseases and wildfires. Rising sea levels would also threaten most of Indonesia's population, who live in low-lying coastal areas. Impoverished communities would likely be affected the most by climate change. Tectonically , most of Indonesia's area

10032-576: The inhabitants of the "Indian Archipelago or Malay Archipelago ". In the same publication, one of his students, James Richardson Logan , used Indonesia as a synonym for Indian Archipelago . Dutch academics writing in East Indies publications were reluctant to use Indonesia . They preferred Malay Archipelago ( Dutch : Maleische Archipel ); the Netherlands East Indies ( Nederlandsch Oost Indië ), popularly Indië ;

10146-498: The interiors of Kalimantan and Papua, and less in areas closer to Australia, such as Nusa Tenggara, which tends to be relatively dry. The almost uniformly warm waters that constitute 81% of Indonesia's area ensure that land temperatures remain relatively constant. Humidity is quite high, at between 70 and 90%. Winds are moderate and generally predictable, with monsoons usually blowing in from the south and east in May through October and from

10260-419: The island's river settlements. Indonesia lies along the equator, and its climate tends to be relatively even year-round. Indonesia has two seasons—a dry season and a wet season —with no extremes of summer or winter. For most parts of Indonesia, the dry season falls between May and October, while the wet season falls between November and April. Indonesia's climate is almost entirely tropical , dominated by

10374-464: The largest. A shared identity has developed with the motto " Bhinneka Tunggal Ika " ("Unity in Diversity" literally , "many, yet one"), defined by a national language , cultural diversity, religious pluralism within a Muslim-majority population, and a history of colonialism and rebellion against it. A developing country , Indonesia is classified a newly industrialized country , with its economy

10488-440: The less malarial hill country to its south; his fellow councilman Hendrik Tillema had campaigned on a platform of combatting malaria and joined De Vogel's scheme, broadening it into a "village improvement" ( Dutch : kampongverbetering ) movement. Purchasing land in the heights with their own money, the two men and some friends passed it on to the city with an initial zoning plan by KPC de Bazel in 1907 but could never convince

10602-650: The local population. After Indonesian independence in 1945, Semarang became the capital of Central Java on 18 August 1945, headed by Mr. Moch.Ichsan. It also became the site of a battle (Five days battle, Pertempuran lima hari ) between the new Indonesian military and Japanese soldiers in October 1945. Shortly after that, what had been the Indonesia-conducted Ambarawa , Magelang , and Ungaran offensives reached Semarang city on 15 December 1945, causing an 87-day battle that swept away

10716-524: The lower city and transportation slow or expensive, few of the lower classes were interested in moving to the district but it set a pattern that was followed with three more successful housing plans between 1916 and 1919. The population grew by 55%, adding 45,000 Javanese, 8500 Chinese, and 7000 Europeans. Karsten's approach to town planning emphasized its aesthetic, practical, and social requirements articulated in economic terms rather than purely racial ones. Driven by economic growth and spatial city planning,

10830-642: The national level is the People's Consultative Assembly ( Majelis Permusyawaratan Rakyat , MPR). Its main functions are supporting and amending the constitution, inaugurating and impeaching the president, and formalising broad outlines of state policy. The MPR comprises two houses; the People's Representative Council ( Dewan Perwakilan Rakyat , DPR), with 575 members, and the Regional Representative Council ( Dewan Perwakilan Daerah , DPD), with 136. The DPR passes legislation and monitors

10944-559: The north and west in November through April. Typhoons and large-scale storms pose little hazard to mariners; significant dangers come from swift currents in channels, such as the Lombok and Sape straits. Several studies consider Indonesia to be at severe risk from the projected effects of climate change . These include unreduced emissions resulting in an average temperature rise of around 1 °C (2 °F) by mid-century, raising

11058-983: The official population estimate as at mid-2023 was 1,694,740, comprising 838,440 males and 856,310 females. The built-up urban area had 3,183,516 inhabitants at the 2010 census spread over two cities and 26 districts. The Semarang metropolitan area (a.k.a. Kedungsepur ) has a population of over 6 million in 2020 ( see Greater Semarang section ). The population of the city is predominantly Javanese with significant Chinese presence. [REDACTED] Demak Sultanate (1547–1554) [REDACTED] Kingdom of Pajang (1568–1587) [REDACTED]   Mataram Sultanate (1587–1705) [REDACTED]   Dutch East India Company (1705–1799) [REDACTED]   Dutch East Indies (1800–1942) [REDACTED]   Empire of Japan (1942–1945) [REDACTED]   Dutch East Indies (1945–1949) [REDACTED] United States of Indonesia (1949–1950) [REDACTED]   Indonesia (1950–present) The history of Semarang goes back to

11172-425: The only ones where the indigenous people have privileges in their local government. Indonesia maintains 132 diplomatic missions abroad, including 95 embassies. The country adheres to what it calls a "free and active" foreign policy, seeking a role in regional affairs in proportion to its size and location but avoiding involvement in conflicts among other countries. Indonesia was a significant battleground during

11286-487: The opposing forces of the military , political Islam, and the increasingly powerful Communist Party of Indonesia (PKI). Tensions between the military and the PKI culminated in an attempted coup in 1965. The army, led by Major General Suharto , countered by instigating a violent anti-communist purge that killed between 500,000 and one million people and incarcerated roughly a million more in concentration camps . The PKI

11400-408: The poor. This area became known as Candi Baru ( Dutch : Nieuw Tjandi ) and forms the core of the present-day Candisari District. Although it remained highly stratified by class, Candi Baru had less ethnic segregation than the older area of town and incorporated public squares, athletic facilities, and places for public bathing and washing that could be used communally. With most work remaining in

11514-544: The poverty line, and the official open unemployment rate was 5.28%. During the first year of the global COVID-19 pandemic , the economy suffered its first recession since the 1997 crisis but recovered in the following year. Indonesia has abundant natural resources. Its primary industries are fishing, petroleum, timber, paper products, cotton cloth, tourism, petroleum mining, natural gas, bauxite, coal, and tin. Its main agricultural products are rice, coconuts, soybeans, bananas, coffee, tea, palm, rubber, and sugar cane. Indonesia

11628-452: The region and built roads and railroads, making Semarang an important colonial trading centre. The historic presence of a large Indo (Eurasian) community in the area of Semarang is also reflected by the fact a creole mix language called Javindo existed there. Semarang was handed by the Sultan of Mataram to the Dutch East Indies in 1678. The city was pictured as a small settlement with

11742-623: The remarkable flare star UV Ceti . He also catalogued 17,000 high-proper motion stars in the Luyten Two-Tenths Arcsecond Catalog. An exoplanet was discovered orbiting one of them, LTT 1445A . Awards Named after him Semarang Semarang ( Javanese : ꦏꦸꦛꦯꦼꦩꦫꦁ ) is the capital and largest city of Central Java province in Indonesia . It was a major port during the Dutch colonial era , and

11856-458: The result of trade and industrial success and spatial planning. The Japanese military occupied the city, along with the rest of Java, in 1942, during the Pacific War of World War II . During that time, Semarang was headed by a military governor called a Shiko, and two vice governors known as Fuku Shiko. One of the vice governors was appointed from Japan , and the other was "chosen" from

11970-455: The seventh century CE, the Srivijaya naval kingdom flourished due to trade and the influences of Hinduism and Buddhism . Between the eighth and tenth centuries CE, the agricultural Buddhist Sailendra and Hindu Mataram dynasties thrived and declined in inland Java, leaving grand religious monuments such as Sailendra's Borobudur and Mataram's Prambanan . The Hindu Majapahit kingdom

12084-423: The seventh century, when Sumatra's Srivijaya and later Java's Majapahit kingdoms engaged in commerce with entities from mainland China and the Indian subcontinent . Over the centuries, local rulers assimilated foreign influences, leading to the flourishing of Hindu and Buddhist kingdoms. Sunni traders and Sufi scholars later brought Islam , and European powers fought one another to monopolise trade in

12198-438: The subtropical highland climate (Köppen Cwb ) is more pronounced during dry season. Some regions, such as Kalimantan and Sumatra , experience only slight differences in rainfall and temperature between the seasons, whereas others, such as Nusa Tenggara, experience far more pronounced differences with droughts in the dry season and floods in the wet season. Rainfall varies across regions, with more in western Sumatra, Java, and

12312-561: The trade centre of agricultural production. The project was soon followed by the development of the Staatsspoorwegen Railway and the connecting roads into the inner city of Semarang at the end of the 19th century. Colombijn (2002) marked the development as the shift of urban functions, from the former river orientation to all services facing the roads. The Dutch East Indies ' mail and railway projects improved communication and transportation, bringing an economic boom to

12426-633: The village ( desa ) is divided into smaller units called dusun or dukuh (hamlets), which are the same as RW. Following the implementation of regional autonomy measures in 2001, regencies and cities have become chief administrative units responsible for providing most government services. The village administration level is the most influential on a citizen's daily life and handles village or neighbourhood matters through an elected village head ( lurah or kepala desa ). Nine provinces—Aceh, Jakarta, Yogyakarta, Papua , Central Papua , Highland Papua , South Papua , Southwest Papua , and West Papua —are granted

12540-521: The world's 16th-largest by nominal GDP and the 7th-largest by PPP . It is the world's third-largest democracy, a regional power , and is considered a middle power in global affairs. The country is a member of several multilateral organisations, including the United Nations, World Trade Organization , G20 , and a founding member of the Non-Aligned Movement , Association of Southeast Asian Nations , East Asia Summit , D-8 , APEC , and

12654-681: Was a founding member of the Non-Aligned Movement (NAM) and the Organisation of Islamic Cooperation (OIC). Indonesia is a signatory to the ASEAN Free Trade Area agreement, the Cairns Group , the World Trade Organization (WTO), and a former member of OPEC . Indonesia has been a humanitarian and development aid recipient since 1967, and recently, the country established its first overseas aid programme in late 2019. Indonesia's Armed Forces (TNI) include

12768-579: Was achieved in 2005. Indonesia is the southernmost country in Asia. The country lies between latitudes 11°S and 6°N and longitudes 95°E and 141°E . A transcontinental country spanning Southeast Asia and Oceania, it is the world's largest archipelagic state , extending 5,120 kilometres (3,181 mi) from east to west and 1,760 kilometres (1,094 mi) from north to south. The country's Coordinating Ministry for Maritime and Investments Affairs says Indonesia has 17,504 islands (with 16,056 registered at

12882-454: Was blamed for the coup and effectively destroyed. Suharto capitalised on Sukarno's weakened position, and following a drawn-out power play with Sukarno , Suharto was appointed president in March 1968. His US-backed "New Order" administration encouraged foreign direct investment , which was a crucial factor in the subsequent three decades of substantial economic growth. Indonesia was

12996-401: Was founded in eastern Java in the late 13th century, and under Gajah Mada , its influence stretched over much of present-day Indonesia. This period is often referred to as the "Golden Age" in Indonesian history. The earliest evidence of Islamized populations in the archipelago dates to the 13th century in northern Sumatra . Other parts of the archipelago gradually adopted Islam, and it was

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