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The performance of oil-filled pressure cores is very much affected by the corrugated diaphragm and the oil filling volume. The purpose of this paper is to show the effects of different corrugated diaphragms, different oil filling volumes and different treatments of the corrugated diaphragms on the performance of pressure sensors.

Pressure-sensitive cores with different diaphragm diameters, different diaphragm ripple numbers and different oil filling volumes are produced, and thermal cycling is introduced to improve the diaphragm performance, and finally the performance of each pressure-sensitive core is tested and the test data are analyzed and compared.

The experimental results show that the larger the diameter of the corrugated diaphragm used for encapsulation, the better the performance. For pressure-sensitive cores using smaller diameter corrugated diaphragms, the performance of one corrugation is better than that of two corrugations. When the number of corrugations and the diameter are the same size, the performance of the outer ring of the diaphragm with concave corrugations is better than that with convex corrugations. At the same time, the diaphragm after thermal cycling treatment and appropriate reduction of encapsulated oil filling can improve the performance of the pressure-sensitive core.

By exploring the effects of corrugated diaphragm and oil filling volume on the performance of oil-filled pressure cores, the design of oil-filled pressure sensors can be guided to improve sensor performance.

Tactile sensation is an important sensory function for robots in contact with the external environment. To better acquire tactile information about objects, this paper aims to propose a three-layer structure of the interdigital flexible tactile sensor.

The sensor consists of a bottom electrode layer, a middle pressure-sensitive layer and a top indenter layer. First, the pressure sensitive material, structure design, fabrication process and circuit design of the sensor are introduced. Then, the calibration and performance test of the designed sensor is carried out. Four functions are used to fit and calibrate the relationship between the output voltage of the sensor and the contact force. Finally, the contact force sensing test of different weight objects and the flexible test of the sensor are carried out.

The performance test results show that the sensitivity of the sensor is 0.93 V/N when it is loaded with 0–3 N and 0.23 V/N when it is loaded with 3–5 N. It shows good repeatability, and the cross-interference between the sensing units is generally low. The contact force sensing test results of different weight objects show that the proposed sensor performs well in contact force. Each part of the sensor is a flexible material, allowing the sensor to achieve bending deformation, so that the sensor can better perceive the contact signs of the grasped object.

The sensor can paste the surface of the paper robot’s gripper to measure the contact force of the grasping object and estimate the contour of the object.

In this paper, a three-layer interdigital flexible tactile sensor is proposed, and the structural parameters of the interdigital electrode are designed to improve the sensitivity and response speed of the sensor. The indenter with three shapes of the prism, square cylinder and hemisphere is preliminarily designed and the prism indenter with better conduction force is selected through finite element analysis, which can concentrate the external force in the sensing area to improve the sensitivity. The sensor designed in this paper can realize the measurement of contact force, which provides a certain reference for the field of robot tactile.

Pressure‐sensitive adhesives are characterised by three parameters: tack, resistance to peel and resistance to creep. This characterisation evolved from the use requirements of pressure sensitive products.

This study aims to examine the impact of institutional investors and their classes on the stock return volatility of an emerging market. The paper also determines the moderating role of firm size, crisis and turnover on such relationships.

The study covers nonfinancial companies of the Bombay Stock Exchange-100 index that are listed during the study period. The study uses fixed effects and systematic generalized method of moments estimators to look over the association between institutional investors and firms’ stock return volatility.

The study provides evidence that institutional investors destabilize the Indian stock market. It indicates that institutional investors do not engage in management activities; they earn short-term gains depending on information efficiency. Pressure-insensitive institutional investors have a significant positive relation with stock return volatility, while pressure-sensitive institutional investors do not. The study also reflects that pressure-sensitive institutional investors are underweighted in India, which jointly represents an insignificant nonlinear association between institutional ownership and stocks’ volatility. Furthermore, outcomes reveal that the intersection effect of the crisis, firm size and turnover is positively and significantly related to such relationships.

The outcomes encourage initiatives that keep track of institutional investors in the Indian stock market. To control the destabilizing effect of pressure-insensitive institutional investors, regulators should follow strict regulations on their trading patterns. Moreover, it guides the potential researchers that they should also take into account the impact of other classes of ownership structure or what type of ownership can help in stabilizing or destabilizing the Indian stock market.

Abundant literature studies the relationship between institutional ownership and firm performance in the Indian context. From the standpoint of making management decisions, the return and volatility of stock returns are both different aspects. However, this study examines the effect of institutional ownership and its groups on the volatility of stock return using the panel data estimator, which was previously not discussed in the literature.

Previous empirical evidence scrutinizing the impact of the institutional ownership on the firm performance has produced inconclusive results and mostly concentrated in the developed market. Hence, the purpose of this paper is to assess the impact of the ownership engagement by pressure-resistant, pressure-sensitive and foreign institutions on the corporate financial performance in a developing market like India post US financial crisis.

This study considers a panel data set of 361 Indian listed firms from National Stock Exchange (NSE) 500 index for a period of eight years from financial year (FY) 2008-2009 to FY 2015-2016. The panel data regression (pooled ordinary least square [OLS], fixed-effect [FE] and random-effect [RE]) and simultaneous equation modeling are used by considering the institutional ownership engagement as both exogenous and endogenous variable.

The test results show that institutional ownership engagement by the pressure-resistant and foreign institution have a robust and positive effect, while ownership engagement by the pressure sensitive institution has an adverse impact on the financial performance of the Indian listed firms.

The findings will boost the monitoring activities of the institutional owners in the developing markets. The investment from pressure-resistant and foreign institutions needs to be augmented in Indian firms to improvise their governance functions and performance.

This research will enrich the governance literature of the developing economies as the studies on institutional ownership engagement are limited in the developing world. Further, this study adds value by capturing two emerging institutional ownership category such as the pressure-resistant and pressure-sensitive, which are still untouched in the Indian context. Next, the consideration of the institutional ownership as both exogenous and endogenous is also novel to the Indian literature.

The purpose of this paper is to analyze the role of large equity ownership by both institutions and outside block shareholders in monitoring the board of directors’ decision to initially adopt defense mechanisms and the subsequent capital market reaction to the adoption.

This paper employs an empirical methodology that controls for selection bias. Multiple regressions were employed to assess the relationship among the variables.

Stockholder wealth effects of poison pills are positively related to pressure‐resistant institutions, which is consistent with effective monitoring. The wealth effects of poison pills, however, are negatively related to pressure‐sensitive investors, consistent with passivity. No empirical relation was found between ownership structure and shareholder approved amendments such as classified boards and fair price amendments.

This study was conducted as a large sample analysis over an earlier time period that was more applicable for evaluating anti‐takeover techniques.

The results are consistent with pressure‐resistant institutions actively monitoring to prevent unilaterally implemented defense mechanisms of all types, whereas pressure‐sensitive institutions appear to more readily accept poison pills.

These results suggest that failing to control for the type of outside investor may not clearly portray documented relations in other corporate governance studies.

To show that differences in the extent to which firms engage in unrelated diversification can be attributed to differences in ownership structure.

We draw on longitudinal data and use a panel analysis specification to test our hypotheses.

We find that unrelated diversification destroys value; pressure-sensitive Anglo-American owners in a firm’s equity reduce unrelated diversification, whereas pressure-resistant domestic owners increase unrelated diversification; the greater the firm’s free cash flow, the greater the negative effect of pressure-sensitive Anglo-American owners on unrelated diversification.

We contribute to corporate governance and strategy research by bringing in owners’ institutional origin as a shaper of owner preferences in particular with regards to unrelated diversification. Future research may expand our investigation to more than one home institutional context, and theorize on institutional origin effects beyond the dichotomy between Anglo-American and non-Anglo-American (not oriented toward shareholder value maximization) owners.

Policy makers, financial analysts, owners, and managers may want to reflect about the implications of ownership structure, as well as promoting or joining corporations with particular ownership configurations.

A shareholder value-destroying strategy, such as unrelated diversification has adverse consequences for society at large, in terms of opportunity costs, that is, resources could be allocated to value-creating activities instead. Promoting an ownership configuration that creates value should contribute to social welfare.

Owners may not be exclusively driven by shareholder value maximization, but can be influenced by normative beliefs (biases) stemming from the institutional context they originate from.

The paper aims to highlight a wireless pressure-sensitive micro-device with high pressure sensitivity and accuracy. It is based on the partially stabilized Zirconia (PSZ) ceramic material which is capable of excellent elasticity and robustness.

The paper begins with a general introduction to the wireless interrogating method and then the fabrication processes of the device using high temperature co-fired ceramic (HTCC) technology are described in detail.

A passive wireless micro-device made from a novel material-PSZ ceramic on pressure monitoring is fabricated and tested and the authors proved that the device possesses an advantages over some proposed wireless sensors on interrogating distance. The pressure sensitivity of the device is 336 kHz/bar at readout distance 2.5 cm and that is an excellent property.

The paper shows a new design scheme for wireless pressure measurement. The future application of the wireless device indicates the problem on external packaging and wire connection could be avoided. The allowable interrogation distance between the device and readout circuit reaches 2.5 cm which is mentioned for the first time so far. The distance is long enough to insert a thermal insulation material which can protect the vulnerable readout circuit from harsh environment, so the research finding is meaningful for the modern measurement technology.

The Indian Companies Act (2013) mandates the appointment of at least one woman director for large publicly listed companies in India in order to increase gender diversity on corporate boards. The study analyzes the relationship between corporate governance mechanisms, board gender diversity, and ownership structure on dividend payout decisions in an emerging economy like India. The study uses data collected for nonfinancial firms listed on NSE (National Stock Exchange) 500 in India from the period 2008 to 2020. Contrary to the evidence from developed economies, the study finds that increased female representation and greater proportion of female independent directors on the board are associated with lower dividend payout decisions in the Indian context. As it stands, the female representation on corporate boards in India is woefully low and appears to be mere tokenism. The study explores the role of regulation in increasing gender diversity on corporate boards and offers insights from an emerging economy where such a regulation is in place.