Experimentation and Start-up Performance: Evidence from A/B Testing

Recent scholarship argues that experimentation should be the organizing principle for entrepreneurial strategy. Experimentation leads to organizational learning, which drives improvements in firm performance. We investigate this proposition by exploiting the time-varying adoption of A/B testing technology, which has drastically reduced the cost of testing business ideas. Our results provide the first evidence on how digital experimentation affects a large sample of high-technology start-ups using data that tracks their growth, technology use, and products. We find that, although relatively few firms adopt A/B testing, among those that do, performance improves by 30%–100% after a year of use. We then argue that this substantial effect and relatively low adoption rate arises because start-ups do not only test one-off incremental changes, but also use A/B testing as part of a broader strategy of experimentation. Qualitative insights and additional quantitative analyses show that experimentation improves organizational learning, which helps start-ups develop more new products, identify and scale promising ideas, and fail faster when they receive negative signals. These findings inform the literatures on entrepreneurial strategy, organizational learning, and data-driven decision making. This paper was accepted by Toby Stuart, entrepreneurship and innovation.

Research on network security technology of industrial control system

The relationship between industrial control system and Internet is becoming closer and closer, and its network security has attracted much attention. Penetration testing is an active network intrusion detection technology, which plays an indispensable role in protecting the security of the system. This paper mainly introduces the principle of penetration testing, summarizes the current cutting-edge penetration testing technology, and looks forward to its development.

Research and application of infrared thermography testing technology for large-scale amusement rides

The operation of large-scale amusement rides is directly related to the safety of the passengers. When an accident occurs involving an amusement ride, the social impact is extremely negative. Therefore, the safety requirements for large-scale amusement rides are extremely high. Condition monitoring and fault diagnosis technologies provide effective ways to ensure the safe operation. Infrared thermal imaging is a common inspection and monitoring technology, which is widely used in electrical and hydraulic machinery systems. However, there is little literature about the application of infrared thermography (IRT) in large-scale amusement rides and a lack of analysis and evaluation methods for infrared inspection results. In order to expand this technology to the field of large-scale amusement rides, it is necessary to research the temperature increase characteristics of key components and develop corresponding technical standards. In the current study, the temperature variation characteristics of the electrical and hydraulic systems of large-scale amusement rides are first examined. Subsequently, the first IRT testing standard for amusement rides in China is described, including its main content and technical requirements. Two test cases are provided in this study in order to illustrate the practicability and reliability of infrared thermography testing technology in the large-scale amusement rides industry.

Mitigating isolation: The use of rapid antigen testing to reduce the impact of self-isolation periods

Isolating, either enforced or self-guided, is a well-recognised and used technique in the limitation and reduction of disease spread. This usually balances the societal harm of disease transmission against the individual harm of being isolated and is typically limited to a very small number of individuals. With the widespread transmission of SARS-CoV-2 and requirements to self-isolate when symptomatic or having tested positive, the number of people affected has grown very large causing noticeable individual cost, and disruption to the provision of essential services. With widespread access to reliable rapid antigen tests (also known as LFD or LFTs), in this paper we examine strategies to utilise this testing technology to limit the individual harm whist maintaining the protective effect of isolation. We extend this work to examine how isolation may be improved and mitigate the release of infective individuals into the population caused by fixed time-periods.

Application of QR Code Online Testing Technology in Nursing Teaching in Colleges and Universities

In view of the current situation that the nursing teaching content is lacking pertinence and cannot effectively cultivate students’ critical thinking, this paper puts forward the application analysis of two-dimensional code online testing technology in nursing teaching in colleges and universities. Through the analysis of two-dimensional code recognition technology architecture and common application fields, an intelligent nursing teaching platform for two-dimensional code online testing technology was designed. Systematically, we summarize the advantages of intelligent nursing teaching platform, use flash and 3D technology to complete the virtualization of nursing teaching scene, and use XML technology to update and save teaching resources; we further build an intelligent nursing teaching platform by using the basic plate, nursing station plate, ward plate, dispensing room plate, and case and operation review plate. The experimental results show that under the two-dimensional code online test technology, the nursing teaching method in colleges and universities has strong teaching resource processing efficiency, improves the operation level of students’ nursing technology, and effectively cultivates the academic thinking of nursing students, which is of great significance to the progress of nursing teaching.

Application of Building Material Testing Technology

The article analyses the application of building material testing technology, concludes that though the application of building material testing technology, the quality of the material can be tested, and unqualified materials can be found in time, and removed from the construction, to prevent the impact of the construction effect, and ensure the quality of the construction project.

Recent Patents on Third Generation Bearing Testing Machine

Background: Bearing testing machine is the key equipment for bearing design, theoretical research and improvement, and it plays an important role in the performance of bearing life, fatigue, vibration and working temperature. With the requirements of aerospace, military equipment, automobile manufacturing and other industrial fields of the bearing are becoming higher and higher. There is an urgent need for high-precision and high-efficiency bearing testing machines to monitor and analyze the performance of bearings. Objective: By analyzing the recent patents, the characteristics and existing problems of the current bearing testing machine are summarized to provide references for the development of bearing test equipment in the future. Methods: This paper reviews various representative patents related to the third generation bearing testing machines. Results: Although the structure of bearing testing machines is different, the main problems in the structure and design principle of bearing testing machine have been summarized and analyzed, and the development of trend and direction of the future bearing testing machine have been discussed. Conclusion: Bearing testing machines for health monitoring of bearing life cycle is of great significance. The current bearing testing machine has basically achieved the monitoring and analysis However, due to the emergence of new types of bearings, further improvement is still needed. With the development of testing technology towards intelligent and big data-driven direction, bearing testing machine is moving towards the type of cloud computing and large-scale testing.