scholarly journals An analytical and probabilistic model with concordance for detecting mine-like objects with mirror symmetry

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Phuc Bao Uyen Nguyen
Keyword(s):  
Mirror Symmetry ◽  
Variational Calculus ◽  
Optimal Strategies ◽  
Probability Of Detection ◽  
Content Type ◽  
The Difference ◽  
And Algebra ◽  
Failure Life ◽  
Detection Strategies ◽  
Practical Implications

PurposeThe purpose is to develop search and detection strategies that maximize the probability of detection of mine-like objects.Design/methodology/approachThe author have developed a methodology that incorporates variational calculus, number theory and algebra to derive a globally optimal strategy that maximizes the expected probability of detection.FindingsThe author found a set of look angles that globally maximize the probability of detection for a general class of mirror symmetric targets.Research limitations/implicationsThe optimal strategies only maximize the probability of detection and not the probability of identification.Practical implicationsIn the context of a search and detection operation, there is only a limited time to find the target before life is lost; hence, improving the chance of detection will in real terms be translated into the difference between success or failure, life or death. This rich field of study can be applied to mine countermeasure operations to make sure that the areas of operations are free of mines so that naval operations can be conducted safely.Originality/valueThere are two novel elements in this paper. First, the author determine the set of globally optimal look angles that maximize the probability of detection. Second, the author introduce the phenomenon of concordance between sensor images.

The response of majority employee-owned firms during the pandemic compared to other firms

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Joseph Blasi ◽  
Douglas Kruse ◽  
Dan Weltmann
Keyword(s):  
Design Methodology ◽  
Employee Ownership ◽  
Social Implications ◽  
Firm Level ◽  
Content Type ◽  
Rutgers University ◽  
Employment Trends ◽  
The Difference ◽  
Industry Membership ◽  
Practical Implications

PurposeThe purpose of this study is to understand how majority employee-owned firms responded to the pandemic compared to firms that were not majority employee-owned. The Employee Ownership Foundation partnered with Rutgers University and the SSRS survey firm to survey ESOP and non-ESOP firms about their responses to the COVID-19 pandemic. A key purpose of the survey was to estimate firm-level changes in employment from mid-January to August (current employment figures were adjusted to August 5 using BLS industry employment trends). The survey also looked at other forms of adjustment and responses to the pandemic as reviewed below. The focus in this study is on the differences between firms that are majority owned by ESOPs and those that are not.Design/methodology/approachThe survey included 247 executives from ESOP Association member companies and 500 executives from an SSRS business panel constructed to be representative of US companies with 50 or more employees. The survey started on August 5 and ended on September 23, 2020.Findings(1) Majority ESOP firms had employment declines from January to August that were on average only one-fourth as large as for other firms. The difference is maintained when controlling for industry membership. (2) Majority ESOP firms were more likely to be declared “essential,” but the lower employment cutbacks among majority ESOP firms remain among essential and non-essential businesses. As essential businesses, majority ESOP firms were more likely receive Paycheck Protection Program or other government pandemic assistance, but both assistance recipients and non-recipients had lower employment cutbacks among majority ESOP firms. (3) The extent of employment cutbacks was higher for non-managers than for managers, but the manager/non-manager gap was higher among other firms than among majority ESOP firms.Research limitations/implicationsThis study supports empirical findings done previously.Practical implicationsThis study suggests to non-EO firms what they can do.Social implicationsThis study suggests strengths of EO firms.Originality/valueA very original and one-of-a-kind dataset.

Open Access Publishing, academic research and scholarly communication

2015 ◽  
Vol 39 (5) ◽  
pp. 637-648 ◽  
Author(s):  
Robin Osborne
Keyword(s):  
Open Access ◽  
Best Practice ◽  
Academic Research ◽  
Open Access Publishing ◽  
Free Access ◽  
Content Type ◽  
The Difference ◽  
Research Councils ◽  
Practical Implications ◽  
Wrong Place

Purpose – The purpose of this paper is to explore the difference between Open Access and accessibility, to argue that accessibility is the most crucial feature, and to suggest some ways in which Open Access militates against accessibility. Design/methodology/approach – Analysis of best practice by journals and monograph publishers is used to highlight the degree to which accessibility is enhanced by input from readers and editors. The expense of this, both real and hidden, is shown to be compatible only with difficulty with publishing methods where keeping costs low is essential, and Open Access alternatives that make available manuscripts “as submitted” are shown to make available less accessible scholarship. Findings – Scholarship is markedly improved by referees and editors; the emphasis needs to be put on making available the most accessible scholarship, not on making more scholarship available. Practical implications – Journals and publishers should concentrate on, and research councils and similar bodies insist upon, ensuring high quality critical review and editing, not cost-free access. Originality/value – The debate on Open Access has put its emphasis in the wrong place. Rather than easier access to more scholarship, increased resource devoted to pre-publication review, revision and editing is the most important development to ensure the greatest advances in research and scholarship.

The economic and financial viability of sheltered employment centres

2019 ◽  
Vol 57 (9) ◽  
pp. 2261-2283
Author(s):  
Vera Gelashvili ◽  
Eva María Aguilar Pastor ◽  
María-Jesús Segovia-Vargas ◽  
Maria-del-Mar Camacho-Miñano
Keyword(s):  
Training Programs ◽  
Similar Response ◽  
Economic Returns ◽  
Content Type ◽  
Strategic Plans ◽  
Low Levels ◽  
The Difference ◽  
Practical Implications ◽  
Very High

Purpose The purpose of this paper is to investigate whether sheltered employment centers (CEEs) which have a higher rate of professionalization of their managers have better economic returns than those that have a lower one. Design/methodology/approach A questionnaire has been drawn up for their managers. After collecting the answers, an index of professionalization classifies the CEEs with managers of high, medium and low levels of professionalism. This index is then correlated with the main financial ratios of companies. Findings The results show that companies with the highest level of managers’ professionalization, on average, have higher economic returns than companies with medium and low rates, although the difference is not very high. This study is an important contribution to academic literature, as it is the first to examine the professionalization of CEE managers. Research limitations/implications Finally, this paper is not short of limitations. The number of responses is small but there are similar studies with similar response rates. Additionally, the scarcity of responses may suggest that there is a lack of interest about the utility of professionalization by some CEEs managers because, perhaps, they do not have the necessary competences to understand its importance in management. Practical implications This study has some main implications for stakeholders: first, CEEs must pay more attention to the professionalization of their management team, because professionalization can lead to meeting its goals and guaranteeing the firm’s growth. Second, training programs in skills and attitudes should be designed to strengthen these competencies. Moreover, managers of social firms should know that the establishment of strategic plans will be useful to identify new opportunities in the market. Social implications Given the important role of these social firms for the employment of people with disabilities, training programs should be promoted by government in order to ensure the professionalization of these companies. Originality/value This research is an important contribution to the literature on this subject because there are no studies about the level of professionalization of CEEs, companies that represent an important value for the economy of a country.

Understanding the difference of values-based motivation of managerial workers in spa businesses in Thailand

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Pornlapas Suwannarat
Keyword(s):  
Data Collection ◽  
Design Methodology ◽  
Cultural Background ◽  
Core Values ◽  
Operational Performance ◽  
Collection Method ◽  
Content Type ◽  
The Difference ◽  
Asean Countries ◽  
Practical Implications

PurposeThis study focuses on variations of the importance of core values through motivational domains of individuals by their cultural background. The effect of motivational domains on operational performance has also been investigated.Design/methodology/approachThe study used survey as the main data collection method to elicit data from managerial workers in spa businesses in four regions of Thailand. An unpublished database of spa businesses was provided to the study by the Thai Chamber of Commerce.FindingsSignificant variations of the importance of motivational domains of managerial workers can be found according to the subculture of each of the four regions of Thailand. In addition, the motivational domains have found their significant impact on worker operational performance.Research limitations/implicationsOne of the limitations of this study may be the distribution of samples because the study focuses on spa businesses, most of which in each region are located in big tourism provinces that may not be wholly representative of the characteristics of each region.Practical implicationsThis study will be of practical value for practitioners or managers of any firms since it is important to consider value variations when assessing the operational performance; workers, especially managerial workers, in each subculture may have different priorities in the motivational domains of their lives. This could affect their operational performance.Originality/valueThis is an original attempt to ascertain variations of core values through motivational domains by subculture. It fills a knowledge gap in under-researched area in the literature since so far a few studies have examined this issue in the ASEAN countries.

Digitizing oral history: can you hear the difference?

2015 ◽  
Vol 31 (3) ◽  
pp. 125-133 ◽  
Author(s):  
Anthony Cocciolo
Keyword(s):  
Best Practice ◽  
Qualitative Difference ◽  
Oral Histories ◽  
Content Type ◽  
Fine Grain ◽  
Audio Recordings ◽  
The Difference ◽  
Archival Quality ◽  
Practical Implications ◽  
Quality Recording

Purpose – The purpose of this study is to answer the questions: Can students discern the difference between oral histories digitized at archival quality (96 kHz/24-bit) versus CD-quality (44.1 kHz/16-bit)? and How important do they believe this difference is? Digitization of analog audio recordings has become the recommended best practice in preserving and making available oral histories. Additionally, well-accepted standards in performing this work are available. However, there is relatively little research that addresses if individuals can hear a qualitative difference in recordings made with best practices versus those that have not. Design/methodology/approach – In all, 53 individuals participated in the study, where they listened to three sets of oral histories and had to decide which was the archival-quality recording versus the CD-quality recording and mark their answer on a survey. Findings – Students could discern less than half of the time on average which was the archival quality versus the CD-quality recording. Further, after listening to the differences, they most often indicated the difference was “a little bit important”. Practical implications – This research does not suggest that archivists abandon well-established sound digitization practices that produce results that audio archivists (and those able to hear fine-grain audio differences) find superior. Rather, it does imply that additional work may be needed to train listeners to discern these fine-grain differences, and appreciate the highest-fidelity replication of original audio recordings. Originality/value – This research addresses a gap in the literature by connecting audio digitization practices to its impact on listener perception.

Does a unique “T+1 trading rule” in China incur return difference between daytime and overnight periods?

2018 ◽  
Vol 8 (1) ◽  
pp. 2-20 ◽  
Author(s):  
Xundi Diao ◽  
Hongyang Qiu ◽  
Bin Tong
Keyword(s):  
Financial Markets ◽  
Short Selling ◽  
Trading Rule ◽  
Content Type ◽  
Index Futures ◽  
Linear Regression Technique ◽  
The Difference ◽  
Nonparametric Techniques ◽  
Return Difference ◽  
Practical Implications

Purpose The purpose of this paper is to examine the difference between the daytime (open-to-close) and overnight (close-to-open) returns of CSI 300 index and its derivative futures. Design/methodology/approach The paper explores the difference between the daytime and overnight time returns by using nonparametric techniques. Moreover, investigation on some factors such as short selling, trading rules, risks are made to seek the sources of the day and night effects based on a large number of empirical analysis. In the end, further analyses on daytime and overnight returns are given by the use of high-frequency data and linear regression technique. Findings The authors show that the daytime returns of CSI 300 index are no less than its overnight returns, while the daytime returns of CSI 300 index futures are no more than its overnight returns, even after removing the heteroscedasticity of the researched time series. Specifically, the PM returns (13:05 to close) play a quite important role in the intra-day time. The findings also suggest that the unique “T+1 trading rule” in China may be a reason that incurs the lower opening price in the morning and the higher closing price in the afternoon, resulting in the statistically significant differences between the daytime and overnight returns. Practical implications The findings are of great importance for investors to decide when to buy and sell stock and futures portfolios in Chinese financial markets. Originality/value This study empirically analyzes why there the higher daytime returns and the lower overnight returns exist in the Chinese stock markets from different aspects and contributes the existing literature on day and night effects because of periodic market closures.

Designing incentive pay practices to motivate not alienate: why firms adopt different payment practice configurations in different countries

2016 ◽  
Vol 24 (5) ◽  
pp. 7-9 ◽  
Author(s):  
Pauline Drury
Keyword(s):  
Profit Sharing ◽  
Incentive Pay ◽  
Human Resource Professionals ◽  
Incentive Payment ◽  
Process Of Change ◽  
Content Type ◽  
The Difference ◽  
Practical Implications ◽  
Designing Incentive ◽  
Number Of Firms

Purpose Examines the reward structures used by private-sector firms in different locations. Design/methodology/approach Analyzes the prevailing incentive pay practice configurations in 14 countries over four continents. Investigates the extent to which local factors constrain firms’ use of personal and team bonuses or profit-sharing. Findings “When in Rome, do as the Romans do” – an old saying but still relevant for the growing number of firms operating in several countries. A well-thought-out incentive scheme encourages employees to think and act in ways that support company objectives. But people in different places can have different ideas about what is fair and appropriate. Human resource professionals have to decide whether to follow the local norms or to introduce the firm’s established practices – and an informed decision can make the difference between having a motivated workforce or making an expensive mistake. Practical implications Observes that organizations in some countries show a strong preference for a particular bundle of incentive options. Warns that introducing a different approach may prove counter-productive unless combined with a careful process of change management. Social implications Highlights the importance of institutional context and social norms in determining the incentive pay configurations adopted in different countries. Originality/value Provides an international guide to prevailing patterns of incentive payment adoption. Shows that external constraints specific to individual countries can have a significant impact on the flexibility of incentive system design.

Different choice of strategic innovation among companies in China market

2014 ◽  
Vol 5 (2) ◽  
pp. 106-121
Author(s):  
Xu Yang
Keyword(s):  
Design Methodology ◽  
Chinese Market ◽  
Test Analysis ◽  
Content Type ◽  
Strategic Innovation ◽  
China Market ◽  
Different Types ◽  
The Difference ◽  
Practical Implications ◽  
Great Growth

Purpose – The purpose of this paper is to test the difference among foreign and domestic cosmetics firms in terms of types of strategic innovations they chose in the Chinese market, and the difference between domestic large-sized cosmetics firms and cosmetics small- to medium-sized enterprises (SMEs) about types of strategic innovation they choose in the Chinese market. Design/methodology/approach – The independent-sample t-test was used to compare foreign and domestic cosmetics firms and domestic SMEs and large-sized cosmetics firms. Findings – Foreign and domestic cosmetics firms should not choose the same type of strategic innovations, and it also showed that Chinese domestic large-sized firms and SMEs should not choose the same types of strategic innovations. Research limitations/implications – China is the exclusive place of focus. Only 19 types of strategic innovations were analyzed. There may be other variables that have not been addressed in the study. Practical implications – Though other large-sized companies achieved considerable profitability or growth by using some types of strategic innovations, the same types may not contribute to the same profitability or growth for SMEs. Although foreign cosmetics companies had great growth and profitability in the Chinese market, domestic large-sized companies should not blindly follow them as their needs and situations are different. Originality/value – From this t-test analysis, it is clear that foreign cosmetics firms and domestic cosmetics firms chose different types of strategic innovation in the Chinese market. Meanwhile, domestic large-sized cosmetics firms and SMEs chose different types of strategic innovation.

Stiffness vs flexibility based triangular spring cell – analysis of performance

2020 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
I. St. Doltsinis
Keyword(s):  
Finite Element ◽  
Cell Model ◽  
Rayleigh Quotient ◽  
Cell Models ◽  
Triangular Finite Element ◽  
Content Type ◽  
Triangular Elements ◽  
The Difference ◽  
Analysis Of Performance ◽  
Practical Implications

Purpose The purpose of the present study is to explore the incomplete substitution of the simplex triangular finite element by either of two models: one evolving out as part of the element flexibility, and the other as part of the element stiffness. Design/methodology/approach The elastic energy stored in each of the units under stress or strain decides on stiffer and weaker responses. The pertaining Rayleigh quotient in terms of the flexibility matrices allows bounding the distance of the spring cell models to the finite element in dependence of the triangle configuration. Findings Despite a superiority of the flexibility cell concept observed in computations, the study reveals constellations of shape and stressing of the triangle that favour the stiffness concept. The latter is seen to behave stiffer than its flexibility counterpart and produces results more distant to the finite element in most cases. Research limitations/implications The difference between the stiffness and the flexibility approach to spring cells is investigated for triangular elements in dependence of the geometrical configuration under specific conditions of stressing. This suffices to refute an exclusive superiority of the flexibility concept although largely true. Practical implications The results of the investigation appear useful in deciding between the spring cell models depending on the case of a spring lattice application. Originality/value The flexibility approach to the spring cell is not widely known yet. This cell model deserves a study on performance and comparison to the different, more common stiffness cell model.

Sale and leaseback to market cap rate ratio in emerging markets – an empirical study in Vietnam

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Quan Le Truong ◽  
Chung Yim Yiu
Keyword(s):  
Practical Implication ◽  
Search Costs ◽  
Structured Interviews ◽  
Content Type ◽  
Institutional Cost ◽  
Potential Risks ◽  
Cap Rate ◽  
The Difference ◽  
Novel Model ◽  
Practical Implications

PurposeThis study hypothesises that sale and leaseback (SLB) cap rate is lower than the market cap rate in emerging economies, and the difference is due to institutional cost and vacancy risk. This study aims to provide a novel SLB-Cap-Rate Model to assess the performance of SLB transaction (SLBT).Design/methodology/approachSLBT data are generally not publicly available in developing countries. This study collected data from 31 SLBTs by conducting semi-structured interviews with stakeholders in Vietnam in 2019. The market cap rates were collected from consultants' reports. The hypotheses are tested by three regression models.FindingsThe results show that the SLBT cap rate is significantly less than the market cap rate in Vietnam, and most of the cap rate discount can be explained by institutional and risk factors. This suggests that SLBT helps to reduce search costs for tenants and vacancy risks. It explains why SLBTs are becoming more common in emerging countries.Practical implicationsThe study has a strong practical implication for assessing the performance of SLBT for both buyers and sellers. It introduces a novel model for analysing the cap rates and potential risks of SLBT to facilitate property investment decisions.Originality/valueThis paper is one of the studies that contains new knowledge on SLBs in a developing country specifically Vietnam.

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