36,493 research outputs found
Comparative Study on Summer Tourism Development in Xining City
No full textIn recent years, people’s demand for cool climate environment has promoted the vigorous development of summer tourism activities. Xining is the largest city on the Qinghai-Tibet Plateau, and has great advantages in developing summer tourism. In this paper, several popular summer tourism cities in China in 2019 are selected. By comparing the development conditions of summer tourism between Xining and these cities quantitatively and qualitatively, the advantages and disadvantages of developing summer tourism in Xining are analyzed, and targeted suggestions are put forward for the development of summer tourism
Study on Urban Resilience from the Perspective of the Complex Adaptive System Theory: A Case Study of the Lanzhou-Xining Urban Agglomeration
No full textIn the context of global environmental change and continuous urbanization, enhancing urban resilience is an important way to improve urban emergency management capacity and achieve sustainable development of urban systems. It is of great significance to clarify the mechanisms and effects of urban resilience and carry out resilience measurement to improve the level of urban system resilience and alleviate the pressure of environmental disturbances on the stable operation of urban systems. As an important part of the “Belt and Road” Initiative and one of the few leading economic regions in western China, promoting the high-quality development of the Lanzhou-Xining urban agglomeration is of profound significance for strengthening ethnic unity and stabilizing the northwest and southwest regions. Based on the complex adaptive system (CAS) theory and the adaptive cycle model, this study understands urban resilience as the comprehensive result of urban system stability, self-organization, learning adaptability and transformability, constructs a multi-level open index evaluation system, and analyzes the spatio-temporal evolution characteristics of urban resilience of the Lanzhou-Xining urban agglomeration from the proposed design to the formal planning in 2010–2017. The findings are as follows: (1) Research on the urban resilience of the Lanzhou-Xining urban agglomeration verifies the applicability of the evolutionary urban resilience analysis framework and makes preliminary findings on urban resilience based on CAS theory, which provide a certain theoretical reference for the research on the spatio-temporal evolution of urban resilience. (2) From 2010 to 2017, significant differences are observed between various urban attributes. Resilience exhibits an overall upward trend, and spatial evolution changes from a double core (Lanzhou and Xining) to three cores (Lanzhou, Xining and Haidong) and polycentric modes. (3) Based on urban resilience characteristics and an urban system adaptability cycle model, this paper divides the Lanzhou-Xining urban agglomeration cities into four types (exploitation–reorganization, conservation–release, conservation–exploitation and exploitation), and proposes corresponding adaptive management countermeasures. These could be adopted as a reference to promote the high-quality development of the Lanzhou-Xining urban agglomeration
Nd Isotopic Constraints on Asian Dust Provenance indicating Rapid Exhumation of the Central Asian Orogen since the Late Oligocene
No full textTable S1 Nd isotopic data for modern sediments
Table S2 Nd isotopes of <2μm and bulk sediments in the Linxia Basin (HLD section) and the Xining Basin (XJ section) and of the integrated dust on the NTP regio
Nd Isotopic Constraints on Asian Dust Provenance indicating Rapid Exhumation of the Central Asian Orogen since the Late Oligocene
No full textTable S1 Nd isotopic data for modern sediments
Table S2 Nd isotopes of <2μm and bulk sediments in the Linxia Basin (HLD section) and the Xining Basin (XJ section) and of the integrated dust on the NTP regio
Special issue: Process safety in times of a pandemic
No full textGreen Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.Safety and Security Scienc
Distributed human computation framework for linked data co-reference resolution
No full textDistributed Human Computation (DHC) is a technique used to solve computational problems by incorporating the collaborative effort of a large number of humans. It is also a solution to AI-complete problems such as natural language processing. The Semantic Web with its root in AI is envisioned to be a decentralised world-wide information space for sharing machine-readable data with minimal integration costs. There are many research problems in the Semantic Web that are considered as AI-complete problems. An example is co-reference resolution, which involves determining whether different URIs refer to the same entity. This is considered to be a significant hurdle to overcome in the realisation of large-scale Semantic Web applications. In this paper, we propose a framework for building a DHC system on top of the Linked Data Cloud to solve various computational problems. To demonstrate the concept, we are focusing on handling the co-reference resolution in the Semantic Web when integrating distributed datasets. The traditional way to solve this problem is to design machine-learning algorithms. However, they are often computationally expensive, error-prone and do not scale. We designed a DHC system named iamResearcher, which solves the scientific publication author identity co-reference problem when integrating distributed bibliographic datasets. In our system, we aggregated 6 million bibliographic data from various publication repositories. Users can sign up to the system to audit and align their own publications, thus solving the co-reference problem in a distributed manner. The aggregated results are published to the Linked Data Cloud
Intersystem soft handover for converged DVB-H and UMTS networks
No full textDigital video broadcasting for handhelds (DVB-H) is the standard for broadcasting Internet Protocol (IP) data services to mobile portable devices. To provide interactive services for DVB-H, the Universal Mobile Telecommunications System (UMTS) can be used as a terrestrial interaction channel for the unidirectional DVB-H network. The converged DVB-H and UMTS network can be used to address the congestion problems due to the limited multimedia channel accesses of the UMTS network. In the converged network, intersystem soft handover between DVB-H and UMTS is needed for an optimum radio resource allocation, which reduces network operation cost while providing the required quality of service. This paper deals with the intersystem soft handover between DVB-H and UMTS in such a converged network. The converged network structure is presented. A novel soft handover scheme is proposed and evaluated. After considering the network operation cost, the performance tradeoff between the network quality of service and the network operation cost for the intersystem soft handover in the converged network is modeled using a stochastic tree and analyzed using a numerical simulation. The results show that the proposed algorithm is feasible and has the potential to be used for implementation in the real environment
On Rural Typologies with Neural Network Method: Case Study on Xining Region
No full textThere are great differences between the rural areas of China, and rural areas themselves have complex development characteristics. With the implementation of the strategy of rural revitalization, 'one-fits-all' rural policy standards have had difficulty to meet the needs of different types of rural development. Rural policies adapted to local conditions cannot be separated from the identification of rural types. How to scientifically distinguish between rural areas and a widely ranged rural typology is of great significance. This paper attempts to introduce the artificial neural network method to identify rural types and to explore the impact of the neural network model trained with different sample data on the results of rural type recognition. Taking the Xining region as an example, rural types were identified and the applicability of the model was tested. Finally, the recognition results of the neural network model were examined and further improvement of the proposed method is discussed.Abstrak. Ada perbedaan besar di daerah perdesaan di negara China, dan daerah pedesaan itu sendiri memiliki karakteristik pembangunan yang kompleks. Dengan penerapan strategi revitalisasi pedesaan, standar kebijakan pedesaan "satu-untuk-semua" sulit memenuhi kebutuhan berbagai jenis pembangunan pedesaan. Kebijakan-kebijakan perdesaan yang disesuaikan dengan kondisi lokal tidak dapat dipisahkan dari identifikasi tipe perdesaan. Cara membedakan secara ilmiah daerah perdesaan dan berbagai tipologi perdesaan menjadi sangat penting. Makalah ini memperkenalkan metode jaringan saraf tiruan untuk mengidentifikasi tipe perdesaan, dan mengeksplorasi dampak model jaringan saraf yang telah dilatih untuk mengenaili tipe perdesaan dengan data sampel yang berbeda. Dengan mengambil wilayah Xining sebagai contoh, tipe perdesaan diidentifikasi, dan penerapan model diuji. Akhirnya, hasil pengenalan oleh model jaringan saraf dievaluasi , dan peningkatan lebih lanjut dari metode ini dibahas.Kata kunci. Daerah Pedesaan, tipologi, jaringan saraf
Distribution characteristics and influencing factors of iron-rich groundwater in Xining City
No full textGroundwater is an important water supply source in Xining City. Previous works have found that iron-rich groundwater limits water development and utilization. However, few studies focus on the distribution characteristics and mechanism of iron-rich groundwater in different types of aquifers in Xining City. Based on the hydrochemical data of 144 groundwater samples, combined with the geological and hydrogeological conditions, the distribution characteristics and influencing factors of iron content in groundwater in different aquifers were analyzed by methods of statistics and geostatistics. The results show that the exceeding standard ratio of iron in groundwater of unconsolidated sediments aquifer (Area Ⅰ) is 27. 85%, which is 1. 6 times and 2. 7 times higher than that of clastic rocks fissure-pore aquifer (Area Ⅱ) and bedrock aquifer (Area Ⅲ), respectively. The proportion of iron-rich groundwater (concentration greater than 0. 3 mg/L) in construction land area is significantly higher than in areas with other land use types. The redox environment and human activities (such as industrial wastewater, domestic sewage, and infiltration of iron-rich river water) may be the main factors affecting the increase of iron content in groundwater in Area I. In addition to the redox environment, Agricultural nitrogen fertilizer use and domestic sewage discharge are also important factors affecting iron-rich groundwater in Area Ⅱ. The iron-rich groundwater in Area Ⅲ is mainly controlled by redox conditions. On the regional scale, the distribution of iron-rich groundwater presents in bands or spots along the river. The iron deposits releasing in the primary strata and human activities (industrial wastewater) are the main source of iron ions in the shallow groundwater in the study area. The migration and enrichment of iron in groundwater are mainly controlled by redox conditions, and affected by the runoff condition, without relation to pH and salt effect. This study can provide scientific basis for urban water environment management in Xining City and similar arid and semi-arid areas
Beyond interfaces: A usability study of Chinese journal databases
No full textA presentation at the Council on East Asian Libraries (CEAL) annual meeting in Boston, MA on March 21, 2007
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