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The purpose of this study is to investigate the effects of film holes’ arrangements and jet Reynolds number on flow structure and heat transfer characteristics of jet impingement conjugated with film cooling in a semicylinder double wall channel.

Numerical simulations are used in this research. Streamlines on different sections, skin-friction lines, velocity, wall shear stress and turbulent kinetic energy contours near the concave target wall and vortices in the double channel are presented. Local Nusselt number contours and surface averaged Nusselt numbers are also obtained. Topology analysis is applied to further understand the fluid flow and is used in analyzing the heat transfer characteristics.

It is found that the arrangement of side films positioned far from the center jets helps to enhance the flow disturbance and heat transfer behind the film holes. The heat transfer uniformity for the case of 55° films arrangement angle is most improved and the thermal performance is the highest in this study.

The film holes’ arrangements effects on fluid flow and heat transfer in an impingement cooled concave channel are conducted. The flow structures in the channel and flow characteristics near target by topology pictures are first obtained for the confined film cooled impingement cases. The heat transfer distributions are analyzed with the flow characteristics. The highest heat transfer uniformity and thermal performance situation is obtained in present work.

The protagonist of the case is Mr. Prasad Dhumal. Prasad is technically gifted and is considered a subject expert in his line. Prasad exhibits all entrepreneurial traits like high energy, positive and a never say die attitude, technical expertise, etc. In a short career span, Prasad has already been instrumental in opening at least 7 different ventures and is now planning the 8th one and hence the name of the case. None of the ventures have survived. This is a classic case of differences between entrepreneurial qualities and managerial qualities, required for the success of a small business.

The case is ideal for students of management. The focus areas are Career Management and Entrepreneurship. It also discusses the failure of a business unit from a societal and family perspective rather than simply a financial one. The case is also good to impress upon the audience the distinction between entrepreneurial skills and managerial skills. The focus that the protagonist shows in starting multiple ventures is also a good indicator of objective-driven and clear Career Management, but the lack of the identified skill set to run a business.

The case brings about the clear distinctions between entrepreneurial qualities and managerial qualities. Career Management has three objectives, expression of the self as a person through the activities one does (job/entrepreneurship) and personal fulfilment, to have an effective work-life balance so that the workplace does not become simply a chore and finally financial security which is also expressed as a reward for something one does or contributes. Even a well-defined career management plan may at times, not yield the desired results.

This is an attempt at a case-based approach highlighting how entrepreneurial zeal and drive may not result in a success of a business venture. Further, the case highlights the serious financial and social isolation that the protagonists faced due to his business failures. The basic learnings from the case are as follows: (1) Start-ups go through phase after establishment; (2) The skill set used to start a venture and sustain it are different and (3) The venture has to survive in a business environment on its merits.

It is a good source material for students of entrepreneurship to understand that sound entrepreneurial qualities may not ensure business success. Businesses may require a blend of managerial, strategic and entrepreneurial qualities to help them navigate through the business environment.

Although a lot has been written about entrepreneurship, the social implications of a business failure and the impact on the entrepreneurs, his family and his loved ones forms the crux of the case. Financial losses result in social isolation for the protagonist. The humiliation and isolation associated with a business loss and its serious impact on friends and family also is highlighted in the case.

The case is factual and describes the exact entrepreneurial journey of Prasad.

This paper examines the process optimization method of the online sales model of information product demand concerning the spillover effect. It illustrates the spillover effect (SE) of online product demand compared with traditional market demand. Also, optimized the SE for the ethical and ordinary consumer.

This article primarily focused on two types of models for online marketing: one is wholesales, and another is the agency. Firstly, the wholesale and agency models without SE and the wholesale and agency models with SE are constructed, respectively, to realize the SE in different sales models. Secondly, online channel participants' optimal price, demand and profit under variant conditions are compared and analyzed. Finally, efficient supply chain theory is optimized for the decision-making of online marketing consumers using an equation-based comparative analysis method.

The study found that when SEs are not considered, stronger piracy regulation makes online channel participants more beneficial. When the positive SE is strong, it is detrimental to manufacturers. When SEs are not considered, online channel participants only reach Pareto in agency mode. Pareto optimality can be achieved in wholesale and agency modes when SEs are considered.

The research has practical implications for an effective supply chain model for online marketing. This is the first algorithm-based comparative study concerning theoretical spillover effect analysis in supply chain management.

Whether older or younger entrepreneurs may be better positioned to achieve performance outcomes for their ventures is a much debated question. Here, we draw on Galenson℉s theory of creativity to propose a contingency perspective for understanding the relationship between entrepreneur age and venture performance, suggesting that a venture℉s level of innovativeness plays a moderating role. Results from a representative sample of 1,182 nascent entrepreneurs revealed mixed support for our hypotheses. While a negative relationship was found between entrepreneur age and performance for those developing “innovative” ventures, no relationship was found between entrepreneur age and performance for those developing “imitative” ventures.