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This paper aims to present a computationally efficient finite element model for the simulation of isothermal immiscible two-phase flow in a rigid porous media with a particular application to CO₂ sequestration in underground formations. Focus is placed on developing a numerical procedure, which is effectively mesh-independent and suitable to problems at regional scales.

The averaging theory is utilized to describe the governing equations of the involved unsaturated multiphase flow. The level-set (LS) method and the extended finite element method (XFEM) are utilized to simulate flow of the CO₂ plume. The LS is employed to trace the plume front. A streamline upwind Petrov-Galerkin method is adopted to stabilize possible occurrence of spurious oscillations due to advection. The XFEM is utilized to model the high gradient in the saturation field front, where the LS function is used for enhancing the weighting and the shape functions.

The capability of the proposed model and its features are evaluated by numerical examples, demonstrating its accuracy, stability and convergence, as well as its advantages over standard and upwind techniques. The study showed that a good combination between a mathematical model and a numerical model enables the simulation of complicated processes occurring in complicated and large geometry using minimal computational efforts.

A new computational model for two-phase flow in porous media is introduced with basic requirements for accuracy, stability, and convergence, which are met using relatively coarse meshes.

In this article, the authors aim to present the homotopy analysis method (HAM) for obtaining the approximate solutions of space‐time fractional differential equations with initial conditions.

The series solution is developed and the recurrence relations are given explicitly. The initial approximation can be determined by imposing the initial conditions.

The comparison of the HAM results with the exact solutions is made; the results reveal that the HAM is very effective and simple. The HAM contains the auxiliary parameter h, which provides a simple way to adjust and control the convergence region of series solution. Numerical examples demonstrate the effect of changing homotopy auxiliary parameter h on the convergence of the approximate solution. Also, they illustrate the effect of the fractional derivative orders a and b on the solution behavior.

The idea can be used to find the numerical solutions of other fractional differential equations.

This study aims to analyze those factors affecting the rural resident’s willingness to adopt solar photovoltaic (PV) which is important for accelerating the popularization of clean energy in China.

This study contained a sample of 653 households in 8 provinces/regions by stratified, and random sampling in rural China. Descriptive analysis, exploratory factor analysis and confirmatory factor analysis techniques have been used for analytical purposes.

The empirical results indicate that financial incentive and social interaction have positive effects on rural residents’ adoption willingness, while village leaders’ engagement can indirectly influence their adoption willingness through social interaction and residents’ cognition.

This study mainly considers external and internal factors but ignores the effect of technical factors. In addition, the samples are just selected from the residents who have adopted solar PV.

This study is expected to be useful for the government, regulators, village leaders, village leaders and other institutions.

This study conducts a systematic analysis and clarifies the relationship between factors (external and internal) and rural residents’ adoption willingness. The village leaders’ engagement is first added to the conceptual model as an external factor, which is very essential in rural residents’ adoption in China.

Light Detection and Ranging (LiDAR) offers a fast and effective way to acquire DSM and extract ground objects such as building, trees and so on. However, it is difficult to extract sharp and precise building boundary from LiDAR data, because its ground sample distance (GSD) is often worse than that of high resolution image. Recently, fusion of LiDAR and high resolution image becomes a promising approach to extract precise boundary. To find the correct and precise boundary, the aim of this paper is to present a series of novel algorithms to improve the quality.

To find the correct and precise boundary, this paper presents a series of novel algorithms to improve the quality. At first, a progressive algorithm is presented to register LiDAR data and images; second, a modified adaptive TIN algorithm is presented to filter ground point, where a region growth method is applied in the adaptive TIN algorithm; third, a novel criterion based on the density, connectivity and distribution of point cluster is developed to distinguish trees point; fourth, a novel method based on the height difference between neighbor points is employed to extract coarse boundaries; at last, a knowledge based rule is put forward to identify correct building boundary from parallel edges.

Thorough experiments, it is conducted that: the registration results are accurate and reliable; filtered ground points has good quality, without missing or redundancy; all tree clusters bigger than one grid are detected, and points of walls and edges are eliminated with the new criterion; detected edges exactly locate at real building boundaries, and statistics show the detection correctness is 98 percent, and the detection completeness is 95 percent.

All results prove that precise boundary can be extracted with fusion of LiDAR and high resolution image.

The purpose of this paper is to strengthen the conceptual understanding of place brands and place branding by exploring to what extent place branding implies a level of selectivity and how this relates to the layering of spatial identities.

A conceptual approach has been taken in this paper to provide an analytical conceptualisation of place branding to guide future empirical studies. The research, and the resulting paper has been structured around a progressive discussion of place as concept, of place brands as limited forms of geographical representations and of place branding as a highly selective process.

Places are highly complex and cannot simply be understood as spatial entities within a closed hierarchical, territorial‐administrative system. Places only exist when they have an audience, and the resulting spatial identities often overlap, contradict or complement each other across existing territorial‐administrative levels. The rise of new forms of spatial identities results in new “places”, and all places can be seen as having or being brands. The notion of place branding implies market segmentation and a certain level of power to exercise control by selecting target groups and formulating policy, strategy and undertaking action.

In future empirical and conceptual research concerned with place branding the inherent selectivity of place branding should be given more attention. The ends to which place branding is used as a means should be paid more attention in both policy (practice) and science (theory).

This paper contributes to the understanding of the metaphorical translation of branding and marketing towards places and spaces.

Reviews some of the popular Geographical Information Systems (GIS) and related digital data sources. Discusses the results of interviews with Princeton University Library patrons and others involved with GIS within the context of a potential GIS service. Develops a proposal for a GIS service for Princeton University with emphasis on the need for training and creating the digital collections that will be most relevant for the University.

This study attempts to discover effective strategies for mobile commerce applications (apps) to grow their consumer base by releasing app strategic updates. Drawing on the landscape search model from strategy research, this study conceptualizes mobile app update strategy as three interdependent decisions, i.e. what business elements are changed in an app strategic update, how substantial the changes are and when strategic updates are released relative to the competitive environment.

Using a field data set of 1,500 strategic updates of seven rival apps in the mobile travel market, this study integrated fuzzy set qualitative comparative analysis (fsQCA) with econometric analysis to analyze how app strategic update decisions interdependently influence app performance.

This study identified three effective and one ineffective mobile app update strategies from the mixed-method analysis, which verified the complex interdependency of app strategic update decisions. A general takeaway from these strategies is that a complex strategy problem on the mobile platform must be solved with respect to the constraints and capabilities of mobile technology.

This study moves beyond a linear view of the relationship between app update frequency and app performance and provides a holistic view of how and why app strategic update decisions mutually influence one another in their impact on app performance. This work makes contributions by identifying interdependency as a conceptual bridge between strategy and mobile app literature and developing an empirically testable version of the landscape search model.

Building on the theory of brand psychological ownership, this paper aims to explore the mediating role of brand psychological ownership in the relationship between brand personality (innocence/coolness) and consumers’ preferences, as well as identify the boundary conditions of this relationship.

To test the hypotheses, a series of four experiments were conducted in Wuhan, a city in southern China, using questionnaires administered at two universities and two supermarkets. Hypotheses were tested using PLS-SEM in SmartPLS 4.

The results indicate that brand personality, specifically the dimensions of innocence and coolness, has a significant impact on consumers’ brand preferences. Brands with a cool personality are preferred over those with an innocent personality. Moreover, the relationship between brand personality and consumers’ brand preferences is moderated by power motivation and identity centrality.

This study contributes to the literature by differentiating between brand personality of innocence and coolness as two separate constructs and proposing brand psychological ownership as a mechanism through which brand personality affects brand preferences. The study’s samples were drawn from universities and supermarkets in southern China, providing evidence for the significant moderating effects of power motivation and identity centrality on consumers’ brand preferences.

The role of marketing as a business function is rapidly changing in China. Consequently, their views on marketing orientation – whether it is accepted, rejected, modified or reframed – have been seriously impacted. This paper aims to report on the results of a survey among Chinese small- and medium-sized enterprise (SME) managers and their perceptions of the market-orientation philosophy. In particular, emphasis was placed on three dimensions of market orientation: intelligence generation, intelligence dissemination and responsiveness. The effect of market orientation on business performance was also examined.

The authors collected data from 214 managers from SMEs. These businesses were located in the cities of Beijing, Shanghai and Shenzhen. The commonly used market orientation (MARKOR) measure was used to test the hypotheses.

Consistent with the extant literature, the findings provided empirical support for the three dimensions of market orientation among Chinese SME. The authors also found that a positive relationship existed between Chinese SME market orientation and firm performance.

This study provides major insights into the market orientation measurement and practices of SME in China. From a measurement perspective, the empirical support for MARKOR across a non-Western context is noteworthy. From a practitioner perspective, the implications relating to understanding Chinese SME and how these companies can best market their products and services to their respective markets are critical. Some of the limitations of our study relates to the sample size, convenience sampling and geographic concentration of the respondents.

This study addresses the gaps in the literature by exploring market orientation in non-large scale businesses as well as the adaptation of the concept in a non-Western cultural setting. The findings extend the conceptualization and application of market orientation to Chinese SME.

The paper aims to investigate the rate of Iranian researchers collaboration with their colleagues in other countries in science citation index (SCI). In addition, it seeks to investigate the visibility of publications by Iranian researchers, and particularly the visibility of papers resulting from international collaboration.

The paper employs the survey research method to answer research questions. Any publication recorded in the SCI database from 1998 to 2007 with at least one Iranian author was recognized and transferred to a database in Excel. The total records were 33,813. This number mostly includes articles, letters, notes, and reviews.

The results showed that Iranian researchers have had scientific collaboration with 115 countries, and that their numbers have increased between 1998 and 2007. The results also showed that the number of domestic articles per year was 2‐3.5 times more than international ones. Investigating international collaboration in different subject areas revealed that geosciences had the biggest number of publications co‐authored internationally. Iran's main partners were the USA, Canada, and UK, respectively. European researchers were the main counterparts of Iranian researchers. In addition, Iranian researchers had mostly co‐published with their colleagues in advanced countries. Among Iranian universities and research institutions, the University of Tehran had the highest collaboration at the international level. The results revealed that the average number of citations received by international co‐authored publications was more than those received by domestic co‐authored publications.

The paper shows the situation of international collaboration among Iranian researchers and the impact of publications resulting from international collaboration.