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| 1 | Underground space planning in Helsinki显示文摘This paper gives insight into the use of underground space in Helsinki,Finland.The city has an underground master plan(UMP) for its whole municipal area,not only for certain parts of the city.Further,the decision-making history of the UMP is described step-by-step.Some examples of underground space use in other cities are also given.The focus of this paper is on the sustainability issues related to urban underground space use,including its contribution to an environmentally sustainable and aesthetically acceptable landscape,anticipated structural longevity and maintaining the opportunity for urban development by future generations.Underground planning enhances overall safety and economy efficiency.The need for underground space use in city areas has grown rapidly since the 21 st century;at the same time,the necessity to control construction work has also increased.The UMP of Helsinki reserves designated space for public and private utilities in various underground areas of bedrock over the long term.The plan also provides the framework for managing and controlling the city's underground construction work and allows suitable locations to be allocated for underground facilities.Tampere,the third most populated city in Finland and the biggest inland city in the Nordic countries,is also a good example of a city that is taking steps to utilise underground resources.Oulu,the capital city of northern Finland,has also started to ‘go underground'.An example of the possibility to combine two cities by an 80-km subsea tunnel is also discussed.A new fixed link would generate huge potential for the capital areas of Finland and Estonia to become a real Helsinki-Tallinn twin city. | Ilkka Vhaho | 2014 | Journal of Rock Mechanics and Geotechnical Engineering2014，6，5： | 4 |
| 2 | Optimal Code Generation for Expression Trees显示文摘 | Steven C Johnson | 1976 | Journal of the ACM1976，23，3： | 1 |
| 3 | Efficient string matching:an aid to bibliographic search显示文摘 | Aho A V Corasick M J | 1975 | Communications of the ACM1975，18，6： | 1 |
| 4 | LR Parsing显示文摘 | Aho A V Johnson S C | 1974 | Computing Surve1974，6，2： | 1 |
| 5 | Corasick Efficient String Matching显示文摘 | Aho A V Margaret J | 1975 | An Aid to Biographic Search Communications of the ACM1975，18，6： | 1 |
| 6 | Efficicnt string matching: an aid to bib- liographic seaxch显示文摘 | Aho A' V Corasick M J | 1975 | Communications of the ACM1975，18，6： | 1 |
| 7 | Efficient string matching: an aid to are independently specified 显示文摘 | AHO A V CORASICK M J | 1979 | TODS1979，4，2： | 1 |
| 8 | Efficient string matching: An aid to bibliographic search显示文摘 | Aho A V Corasick M J | 1975 | Communications of the ACM1975，18，6： | 1 |
| 9 | Efficient string matching: an aid to bibliographic search显示文摘 | Aho A V Corasick M J | 1975 | Comm ACM1975，18，6： | 1 |
| 10 | Efficient string matching:an aid to bibliographic search 显示文摘 | Aho A V Corasickm J | 1975 | Communications of the ACM1975，18，6： | 1 |
| 11 | Efficient string matching: An aid to bibliographic Search 显示文摘 | Aho A V Corasick M J | 1975 | Communications of the ACM1975，18，6： | 1 |
| 12 | Efficient String Matching:An Aid to Bibliographic Search显示文摘 | Aho A V Corasick M J | 1975 | Communications of the ACM1975，18，6： | 1 |
| 13 | Efficient string matching: anaid to biographic search显示文摘 | AHO A V CORASICK M J | 1975 | Communications of the ACM1975，18，6： | 1 |
| 14 | Surgical outcomes in 118 patients with Rathke cleft cysts显示文摘 | Aho CJ Liu C Zelman V | 2005 | J Neurosurg2005，102，2： | 1 |
| 15 | Efficient string matching: an aid to bibliographie search 显示文摘 | AHO A V CORASICK M J | 1975 | Communications of the ACM1975，18，6： | 1 |
| 16 | Surgical outcomes in 118 patients with Rathke cleft cysts显示文摘 | Aho CJ Liu C Zelman V | 2005 | J Neurosurg2005，102，2： | 1 |
| 17 | Efficient string matching:an aid to bibliographic search 显示文摘 | AHO A V CORASICK M J | 1975 | Communications of the ACM1975，18，6： | 1 |
| 18 | Efficient string matching: An aid to bibliographic search显示文摘 | A V Aho M J Corasick | 1975 | Communications of the ACM1975，18，6： | 1 |
| 19 | Surgical outcomes in 118 patients with Rathke cleft cysts 显示文摘 | Aho C J Liu C Zelman V | 2005 | J Neurosurg2005，102，： | 1 |
| 20 | Efficient string matching:an aid to bibliog raphic search显示文摘 | Aho A V Corasick Mar J | 1975 | Communications of the ACM1975，18，6： | 1 |
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