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The purpose of this study is to develop a cylindrical capacitive sensor that has the advantages of high resolution, small size and designability and can be easily installed on lubricant pipeline to monitor lubricant oil debris.

A theoretical model of the cylindrical capacitive sensor is presented to analyze several parameters’ effectiveness on the performance of sensor. Numerical simulations are then conducted to determine the optimal parameters for preliminary experiments. Experiments are finally carried out to demonstrate the detectability of developed capacitive sensors.

It is clear from experimental results that the developed capacitive sensor can monitor the debris in lubricant oil well, and the capacitance values increase almost linearly when the number and size of debris increase.

There is lot of further work to do to apply the presented method into the application. Especially, it is necessary to consider several factors’ influence on monitoring results. These factors include the flow rate of the lubricant oil, the temperature, the debris distribution and the vibration. Moreover, future work should consider the influence of the oil degradation to the capacitance change and other contaminations (e.g. water and dust).

This work conducts a feasibility study on application of capacitive sensing principle for detecting debris in aero engine lubricant oil.

The novelty of the presented capacitance sensor can be summarized into two aspects. One is that the sensor structure is simple and characterized by two coaxial cylinders as electrodes, while conventional capacitive sensors are composed of two parallel plates as electrodes. The other is that sensing mechanism and physical model of the presented sensor is verified and validated by the simulation and experiment.

The purpose of this paper is to investigate how digital transformation changes highly traditional business processes and how it impacts value co-creation and co-destruction. More specifically, the aim is to examine, using the resource interaction approach, how the friction between non-digital and digital resources affects the co-creation and co-destruction of value in a network during digital transformation. Based on this, the authors provide managerial implications on how to handle simultaneous digital and traditional business processes to co-create value during digital transformation.

A case study is conducted of a digital platform provider and of three traditional confectioneries. In this analysis, the authors looked at the business processes of highly traditional confectioneries that have introduced online services through a digital platform and are undergoing digital transformation.

In some industries, it is neither possible nor advisable to fully digitalise all business processes, and companies have to partially retain their traditional, analogue character to create value. The process of value co-creation during digital transformation is affected by friction between the digital and non-digital resources and is mitigated by specific lubricants (e.g. mutual reliance, smooth personal communication, willingness to help, attitude towards change). This results in the improvement of processes and capabilities in terms of digital development and traditional production. Friction may also lead to value co-destruction, for example, as the result of transformation from face-to-face to digital interactions.

The authors contribute to research on the digital transformation of highly traditional companies that need to introduce new, digital technologies and resources while continuing their traditional processes. The authors develop the concept of lubricants that mitigate the friction between resources and, therefore, facilitate value co-creation in a business network. Additionally, the authors provide managerial implications for how to handle simultaneous digital and traditional business processes during digital transformation.

The purpose of this paper is to investigate the effectiveness of the national HIV prevention outreach program for men who have sex with men (MSM) and transgender women (TGW).

It examined changes in condom use, lubricant use, HIV testing and counseling (HTC) uptake and sexually transmitted infection (STI) screening uptake, as well as how and why changes did or did not occur. The study applied mixed methods of both quantitative and qualitative approaches.

There were 16,539 MSM, and TGW reached at least three times in the program during October 2011‒September 2012. The program was found to affect changes in condom use with steady partners (p<0.000), condom use with casual partners (p<0.000), water-based lubricant use (p<0.000), HTC uptake (p<0.000) and STIs screening uptake (p<0.000). Age and province of outreach are associated with HTC uptake and STI screening (p<0.000), slightly as well as gender identity (p<0.1). Gender identity and province of outreach are associated with condom use with steady partners (p<0.000). Gender identity (p<0.000) and sex work (p<0.05) are associated with the use of lubricant. The qualitative results showed that the program had an immediate effect on HTC and STIs screening due to successful bond between the outreach workers and their clients, leading to trust and influencing behavior change.

HIV prevention by peer educators continues to be proved the most effective method, assuming its program consistency. TGW are more vulnerable to MSM to protect themselves, and they have steady partners. Future program for MSM can be replicated and scaled up, but more empowerment component and self-esteem building should be integrated to target TGW.