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Aims to identify security‐relevant semantics of business processes being defined by WS‐BPEL (Web Services Business Process Execution Language, BPEL for short) scripts, in particular, when such scripts defining collaborative business processes on top of web services are deployed across security domain boundaries.

Analysing potential of BPEL to define behaviour of business processes violating restrictions implied by security policies.

Semantic patterns being combinations of particular BPEL features and web services with specific access restrictions implied by security policies are defined and their implications for analysis of BPEL scripts during compliance assessment of cross‐domain defined business processes are identified.

The results of the research part of which is reported here have been applied in a research prototype to BPEL scripts of limited size and comparatively simple business logic. Real‐world examples of BPEL scripts with respect to size and complexity should be examined for further approving suitability of the algorithms used.

The results can be used to specify security policies in terms of security‐critical semantics of BPEL scripts in order to facilitate compliance assessment. In conjunction with other results of this research, this will help to overcome security issues arising from cross‐domain definition of business processes by enabling automatic compliance assessment prior to execution.

To study the optimization of a randomized control problem in an M/G/1 queue in which a removable and unreliable server may provide two phases of heterogeneous service to arriving customers.

Arriving customers follow a Poisson process and require the first essential service (FES). As soon as FES of a customer is completed, the customer may leave the system or opt for the second optional service (SOS). The service times of FES channel and SOS channel are assumed to be general distribution functions. The server requires a startup time with random length before starting service. When the server is working, he may meet unpredictable breakdowns but is immediately repaired. The inter‐breakdown time and repair time of the removable server are exponentially random variable and generally random variable, respectively. By the convex combination property and the renewal reward theorem, several system performances are obtained. A cost model is developed to search the optimal two‐threshold policy at a minimum cost. Sensitivity analysis is performed.

Expressions for various system performances are derived. Sensitivity analysis of optimal randomized control policy (based on the developed expected cost function) with respect to system parameters is investigated.

It is the first time that analytic results of sensitivity analysis of optimal randomized control policy for the complex system have been obtained which is quite useful and significant for engineers.

Credibility concerns regarding integrated reports can harm the intended decrease of information asymmetry between a firm and its investors. Therefore, it is crucial to examine whether voluntary third-party assurance enhances the credibility of integrated reports and, thus, decreases information asymmetry. Furthermore, this study aims to investigate the interaction effect between assurance quality and the disclosed connectivity of the capitals, a distinguishing feature of integrated reports.

Content analysis is performed of the 176 assurance statements included in the 269 integrated reports of Forbes Global 2000 firms disclosed from 2013 to 2015 and the 269 integrated reports themselves. Regression analyzes are applied to examine the associations between assurance, the disclosed connectivity of the capitals and information asymmetry.

The presence of an assurance statement in an integrated report significantly decreases information asymmetry. Surprisingly, assurance quality is not significantly associated with information asymmetry. However, an interaction analysis reveals that combining high assurance quality with high disclosed connectivity of the capitals allows a significant decrease in information asymmetry.

The paper demonstrates that the connectivity of the capitals of integrated reports and assurance quality are connected and together are associated with information asymmetry.

The results imply, both for report preparers and standard setters, that assurance quality is advantageous only when combined with disclosed connectivity of the capitals.

More information on non-financial information measured by the connectivity of the capitals of integrated reporting has an interaction effect together with assurance quality on information asymmetry.

This paper builds on a unique data set derived from the contents of integrated reports and accompanying assurance statements. Furthermore, it extends the integrated reporting literature by investigating the interaction between assurance quality and the disclosed connectivity of the capitals, which had not previously been examined in combination.

The usefulness of risk disclosures (RDs) to support equity investors’ investment decisions is highly discussed. As prior research criticizes the extensive aggregation of risk information in existing empirical research, this paper aims to provide an attempt to identify disaggregated risk information associated with cumulative abnormal stock returns (CARs).

The sample consists of 2,558 RDs of companies listed in the S&P 500 index. The RDs were filed within 10 K filings between 2011 and 2017. First, this study automatically extracted 35,685 key phrases that occurred in a maximum of 1.5% of the RDs. Second, this study performed stepwise regressions of these key phrases and identified 67 (78) key phrases that show positive (negative) associations with CARs.

The paper finds that investors seem to value most the more common key phrases just below the 1.5% rarest key phrase threshold and business-related key phrases from RDs. Furthermore, investors seem to perceive key phrases that contain words indicating uncertainty (impacts) as a negative (positive) rather than a positive (negative) signal.

The research approach faces limitations mainly due to the selection of the included key phrases, the focus on CARs and the methodological choice of the stepwise regression analysis.

The study reveals the potential for companies to increase the information value of their RDs for equity investors by providing tailored information within RDs instead of universal phrases. In addition, the research indicates that the tailored RDs encouraged by the SEC contain relevant information for investors. Furthermore, the results may guide the attention of equity investors to relevant text passages whose deeper analysis might be useful with regard to investors’ capital market decisions.

This paper aims to examine the communicative value of assurance reports by investigating whether the impact on information asymmetries is contingent on the length of the contractual relationship between clients and assurance providers, which can compromise the provider’s independence.

Using a firm-level data set of publicly listed international firms from 2007 to 2016, the authors estimate several regression models for panel data by using the generalized method of moments estimator to address the endogeneity issue.

Results find that the greater the communicative value in assurance statements, the lower the information asymmetries. However, this effect is constrained when the assurance provider’s independence is compromised due to an excessively long-term contractual relationship. In other words, assurance statements with more informative value enhance the firm’s transparency and increase users’ confidence in the sustainability information provided. However, the loss of independence linked to longer tenure jeopardizes the communicative value of the assurance report and contributes to reducing information asymmetries.

The study makes at least three clear contributions to current literature. First, the authors contribute to the limited existing research about the communicative value attributed to assurance statements by stakeholders. Second, the authors indirectly contribute to the literature that analyses whether stakeholders understand the assurance report, a complex statement in a growing market. Addressing the communicative value of assurance is certainly a difficult task, as it is a novel and complex activity. Third, the main contribution is providing initial empirical evidence about the moderating effect that assurance provider tenure has in the relationship between the informational content of the assurance report and the level of information asymmetries. To date, there is no empirical evidence regarding the moderating effect of long assuror’s tenure as an important feature of the assurance market, and beyond that, regarding its impact on the communicative value assigned by stakeholders to assurance statements.

Integrated reporting (IR) aims to provide disclosures of the connectivity of non-financial and financial value creation aspects. These disclosures are defined as the disclosed connectivity of the capitals resulting from integrated thinking. This paper aims to investigate the extent of disclosed connectivity of the capitals in integrated reports and its underlying managerial discretion by drawing on economic-based theories.

Regression analyses are applied to examine the associations between economic firm-level characteristics and the extent of disclosed connectivity of the capitals. The analyses are based on a content analysis of 169 integrated reports disclosed in 2013 and 2014 by Forbes Global 2000 companies.

This paper finds high heterogeneity in the extent of disclosed connectivity of the capitals in current IR practice. This heterogeneity is related to drivers arising from economic-based theories. Firms’ non-financial and financial performance and the importance of strategic shareholders and debt providers are positively associated with the extent of disclosed connectivity of the capitals. The complexity of the business model and a highly competitive environment are negatively associated with the extent of disclosed connectivity of the capitals.

This paper extends qualitative IR studies on the disclosed connectivity of the capitals by quantitative results from a content analysis for a cross-sectional and global sample. Additionally, this study adds to prior IR literature on the drivers of the binary decision to disclose an integrated report by focusing on the extent of disclosed connectivity of the capitals.

For report preparers, users and standard setters, the results reveal that perceived cost-benefit considerations (signaling vs. direct and proprietary costs) may explain managerial discretion regarding the connectivity of the capitals within integrated reports.

This paper examines integrated reports, which are intended to inform providers of financial capital and other stakeholders about the connectivity of the six capitals of the IR framework.

This paper develops a metric disclosure measure of the extent of disclosed connectivity of the capitals. It provides initial evidence of how the IR framework’s focus on this key characteristic is realized in disclosure practice. Concerns about competitive disadvantages and preparation costs limit this key characteristic of integrated reports.

This study aims to provide empirical evidence on the determinants of voluntary integrated reporting (<IR>) disclosure quality.

The samples include companies from the Integrated Reporting Examples Database on the International Integrated Reporting Committee’s (IIRC) website, except South Africa and Brazil, where reporting is mandatory. The final sample includes 29 countries, with 148 companies and 592 observations for the study period 2014–2017. Content analysis is used to measure <IR> disclosure quality derived from the <IR> principles and elements published by IIRC (2013). The fraction regression probit model is used to test the proposed hypothesis.

This study provides empirical evidence that competition from new entrants and country-level accounting competence encourage companies to implement the International Integrated Reporting Framework (IIRF). Signaling theory and diffusion of innovation theory can be used to explain this association. Meanwhile, product market competition of existing rivals has been found to reduce the adoption of the <IR> framework, which is consistent with the proprietary cost theory. Finally, this study finds that company reputation does not affect voluntary <IR> disclosure quality.

This study did not examine the barriers to entry to explain the effect of competition from new entrants as a possible determinant of <IR> disclosure quality. Furthermore, the inclusion of <IR> in the accounting curriculum of universities and certification bodies in certain countries has not been considered as a control variable. The results might also be limited to companies that voluntarily submitted into the Integrated Reporting Examples Database on the IIRC website. All these limitations provide ample avenues for future research.

This research provides implications for governments and standard setters to further sharpen the competence of accountants through memberships in professional accountancy organisations or through training and seminars related to <IR>. The results also suggest that universities should include the topic of <IR> in the accounting program curriculum to increase the understanding of prospective accountants about this reporting regime. The results also show differences on the impact of competition between new entrants and existing rivals on <IR> disclosure quality. This can be used by IIRC or other standard setters to predict the <IR adoption>.

This study uses the diffusion of innovation theory to explain the association between country-level accounting competence and <IR> disclosure quality. Few studies have researched this association. The results show that a country’s accounting competence increases the application of the IIRF in corporate reporting. <IR> has been considered an innovation in corporate reporting and can be implemented by the company if its professional accountants have enough knowledge of this reporting framework.

This paper aims to unite firm- and country-level drivers of the disclosure of integrated reports. It creates a synopsis of voluntary disclosure, signaling, proprietary cost, legitimacy, stakeholder and institutional theory.

The empirical analyses build on a logistic regression model examining the disclosure decisions for integrated reports published between 2012 and 2016 by the 2,000 largest listed companies worldwide.

The results indicate that the disclosure of integrated reports by large listed companies is explained in parallel by multiple theories, operationalized by the firm-level characteristics of lower profitability, a higher market-to-book value, lower leverage, lower level of industry concentration and higher social performance. Additionally, the country-level characteristics of civil law setting and lower investor protection, lower power distance and lower masculinity coincide with the disclosure of integrated reports.

The inferences emphasize that a single theoretical framework cannot explain the decision to disclose an integrated report. Rather, a set of economic firm characteristics may lead to different disclosure decisions in different socio-economic and institutional environments.

The purpose of this study is to examine how student agency influences career decision-making for doctoral students in biological sciences. The authors address the following questions: How do biological science graduate students navigate career indecision? And how does agency relate to their experiences with career indecision?

The authors analyzed interview data collected from 84 PhD biology graduate students. Researchers used a grounded theory approach. After open codes were developed and data were coded, code reports were generated, which were used to determine themes.

More than half of the sample had not committed to a career path, and undecided students were bifurcated into two categories: Uncommitted and Uncertain. Uncommitted graduate students demonstrated agency in their approach and were focused on exploration and development. Uncertain students demonstrated less agency, were more fearful and perceived less control and clarity about their options and strategies to pursue career goals.

Findings suggest some forms of indecision can be productive and offer institutional leaders guidance for increasing the efficacy of career development and exploration programming.

Research on doctoral student career decision-making is often quantitative and rarely explores the role of agency. This qualitative study focuses on the relationship between student agency and career indecision, which is an understudied aspect of career development.

The purpose of this paper is to conduct a survey on research in fabric and cloth simulation using mass spring model. Also in this paper some of the common methods in process of fabric simulation in mass spring model are discussed and compared.

This paper reviews and compares presented mesh types in mass spring model, forces applied on model, super elastic effect and ways to settle the super elasticity problem, numerical integration methods for solving equations, collision detection and its response. Some of common methods in fabric simulation are compared to each other. And by using examples of fabric simulation, advantages and limitations of each technique are mentioned.

Mass spring method is a fast and flexible technique with high ability to simulate fabric behavior in real time with different environmental conditions. Mass spring model has more accuracy than geometrical models and also it is faster than other physical modeling.

In the edge of digital, fabric simulation technology has been considered into many fields. 3D fabric simulation is complex and its implementation requires knowledge in different fields such as textile engineering, computer engineering and mechanical engineering. Several methods have been presented for fabric simulation such as physical and geometrical models. Mass spring model, the typical physically based method, is one of the methods for fabric simulation which widely considered by researchers.