Achieving agility using business model stress testing

Business Model (BM) Innovations aim at making systemic changes in the business logic of companies when they are bringing innovative products and services to the market. Companies should be sensitive to changes in their business environment and able to modify their BMs in an agile way. To assess the agility of BMI during specific market entry situations, this paper uses a method that stress tests the value proposition and the components of a BM against contingent uncertainties. We present three qualitative case studies of companies that differ in their market entry approach. Starting from their strategic orientation, these case companies’ stress test their Business models and BM components, using a scenario-based identification of uncertainties. The BM Stress Test method contributes to a quick understanding of the components their BM needs to monitor, reconsider, or improve. Such stress testing helps enhance business agility. The research contributes to market strategy and business modelling research by introducing BM Stress Testing as a new method that can achieve and maintain agility regarding BM uncertainties.     

Solution-Gelation Method for Preparing Polycrystalline Zircon

A solution-gelation method for the preparation of polycrystalline zircon from zirconyl nitrate and tetraethoxysilane is described. Solution-gelation methods are attractive because they can produce homogeneous starting materials and do not require any special equipment .     

Mobile business models: organizational and financial design issues that matter

Designing viable mobile services and business models that capture value for all the organizations involved is a challenge. There are many design issues that can be taken into account, and it is often unclear what their ultimate effect is on the performance of a business model. This paper offers a framework for relating critical design issues to success factors and tests the causal relationship between these core concepts in the organizational and financial domain of mobile business models, based on an international survey among 120 practitioners and experts in the mobile Internet services domain, most of them from EU countries. According to our findings, addressing organizational design issues (i.e. partner selection, governance and relation management) leads to an acceptable division of roles among actors, while addressing financial design issues (i.e., pricing, division of investments and costs among partners) results in risk levels that are perceived to be acceptable. The level of profitability that is perceived to be acceptable is influenced indirectly by these design issues, because the relationships are mediated through the risk level that the actors involved perceive to be acceptable and through the way the roles are divided among the actors.      

Designing viable business models for context-aware mobile services

Technologies of 3G and beyond open up new opportunities to develop and commercialize context-aware services that utilize information like user location and social context. Although initial expectations were high, the adoption and diffusion of context-aware services have thus far been limited. Existing literature points to failing business models to explain part of the disappointing uptake. However, most authors focus on the factors that explain failing business models rather than providing practical design issues to improve business model viability. This paper fills this gap by specifying generic mobile business model design issues for the domain of context-aware services. As such, we provide a well-grounded, holistic overview of design issues that are the most critical in developing viable business models for context-aware services, based on interviews with eighteen esteemed practitioners and academics in the mobile services domain, at CEO and Professor level. Our findings indicate key challenges in the service domain (i.e. defining value adding elements, specifying target groups and generating trust of consumers in the service), the technology domain (i.e. integrating emerging technology platforms and safeguarding privacy and security), the organizational domain (i.e. division of existing and new roles in complex value networks, openness of the value network towards new service providers and governing the activities in the value network) and the financial domain (i.e. pricing; dividing costs and revenues and combining multiple revenue models). Our research has scientific implications, because it applies generic mobile business model theory to the context-aware services domain. In addition, we provide practical clues to practitioners with regard to the design issues on which they should focus while developing more viable context-aware business models.     

法国橡木和榉木

1法国橡木 法国橡木享誉悠久,造林行家对当地种植条件的洞悉和技术诀窍发挥了主要的作用。专业人员保持着这种传统进行经营管理,而且发扬光大,因此法国橡木一直就是顶级品质的代名词。     

A testing procedure for triaxial tests and a numerical method for the calculation of powder flow properties

A testing procedure for measuring flow properties of powders is developed which makes it possible to use results from triaxial tests in the Jenike bin theory. For the elaboration of the results a numerical method is used, based upon the Warren Spring equation (τ/C)^N = (σ + T)/T. In this equation σ and τ are the normal and shear stresses respectively, C and T the cohesion and tension, and N a curvature parameter. A constant K = C/T and a constant curvature parameter N are assumed for a material. The algorithm used is a least-squares method using Newton's zero finding technique. The solutions obtained by this procedure are not influenced by the initial estimates.     

多支座卧式容器的受力分析和强度计算

本文根据材料力学理论,对多支座卧式容器进行受力分析,给出了剪力和弯矩的计算方法,并对容器的应力计算进行分析,可作为工程设计参考。     

在中密度纤维板生产中应用热能中心的效益

介绍了热能中心的组成,阐述了热能中心在节能、减排、资源综合利用等方面发挥的经济、环境、社会效益。