Journal articles: 'Mismatch field'

1

Farooq, Shujaat. "The Utilisation of Education and Skills: Non-Pecuniary Consequences Among Graduates." Pakistan Development Review 56, no. 1 (March 1, 2017): 1–17. http://dx.doi.org/10.30541/v56i1pp.1-17.

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In this study, an attempt has been made to estimate the incidences of the job mismatch and its determinants in Pakistan. This study has divided the job mismatch into three categories: qualification-job mismatch, skill mismatch and field of study mismatch. The primary dataset has been used in which employed graduates of the formal sector have been targeted. The paper has also measured the qualification-job mismatch by three approaches, and found that about one-third of the graduates have been facing qualification-job mismatch. Similarly, more than one-fourth of the graduates are mismatched in skills, about half of them are over-skilled and the rest are under-skilled. The analysis also shows that 11.3 percent of the graduates have irrelevant, and 13.8 percent have slightly relevant jobs to their field of study. The analysis reveals that over-qualified and over-skilled graduates are less satisfied, while under-qualified and under-skilled graduates are more satisfied with their current jobs. A similar situation has been observed in case of the field of study mismatch, where both the moderate and complete fields of study matched graduates are more satisfied than the mismatched ones. The job search behaviour is positively associated with the level of education. Over-qualification has a positive impact, while under-qualification has a negative effect to search for another job. A good match between field of study and current job reduces the likelihood of intention to quit the job. JEL Classification: I23, I24, J21, J24 Keywords: Education and Inequality, Higher Education, Human Capital, Labour Market

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Farooq, Shujaat. "Mismatch Between Education and Occupation: A Case Study of Pakistani Graduates." Pakistan Development Review 50, no. 4II (December 1, 2011): 531–53. http://dx.doi.org/10.30541/v50i4iipp.531-553.

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In this study, an attempt has been made to estimate the incidences of job mismatch in Pakistan. The study has divided the job mismatch into three categories; education-job mismatch, qualification mismatch and field of study and job mismatch. Both the primary and secondary datasets have been used in which the formal sector employed graduates have been targeted. This study has measured the education-job mismatch by three approaches and found that about one-third of the graduates are facing education-job mismatch. In similar, more than one-fourth of the graduates are mismatched in qualification, about half of them are over-qualified and the half are under-qualified. The analysis also shows that 11.3 percent of the graduates have irrelevant and 13.8 percent have slightly relevant jobs to their studied field of disciplines. Our analysis shows that women are more likely than men to be mismatched in field of study. JEL classification: I23, I24, J21, J24 Keywords: Education and Inequality, Higher Education, Human Capital, Labour Market

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Farooq, Shujaat. "The Utilisation of Education and Skills: Incidence and Determinants among Pakistani Graduates." Pakistan Development Review 50, no. 3 (September 1, 2011): 219–44. http://dx.doi.org/10.30541/v50i3pp.219-244.

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This study estimates the incidence of job mismatch and its determinants in Pakistan, based on three categories: (i) qualification mismatch, (i) skill mismatch, and (iii) field-of-study mismatch. It uses both primary and secondary datasets that target graduates employed by the formal sector. The study measures the qualification mismatch using three approaches and finds that about one third of the graduates sampled face a qualification mismatch. Similarly, more than one fourth are mismatched in terms of skill, about half are over-skilled, and half are under-skilled. The analysis also shows that 11.3 percent hold jobs that are irrelevant to their discipline and 13.8 percent have jobs that are slightly relevant to their discipline. Women are more likely than men to be over-qualified, and age has a negative association with over-qualification. Graduates who belong to political families have a better qualification match but a lower field-of-study match. While a higher level of schooling prevents graduates from being under-qualified, it also raises the likelihood of being over-qualified and over-skilled. Occupation-specific disciplines offer more protection against the possibility of job mismatch. Both full-time education and semester-system education reduce job mismatch, while distance learning raises job mismatch. The phenomena of being over-qualified and over-skilled is more prevalent in lower occupations, as is field-of-study mismatch. JEL classification: I23, I24, J21, J24 Keywords: Education and Inequality, Higher Education, Human Capital, Labour Market

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Farooq, Shujaat. "Job Mismatches in Pakistan: Is there Some Wage Penalty to Graduates?" Pakistan Development Review 54, no. 2 (June 1, 2015): 147–64. http://dx.doi.org/10.30541/v54i2pp.147-164.

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In this study, an attempt has been made to estimate the incidence of job mismatch and its impacts on graduate‘s earnings in Pakistan. The study has divided the job mismatch into three categories; qualification-job mismatch, skill mismatch and field of study and job mismatch. The primary dataset has been used in which the formal sector employed graduates have been studied. This study has measured the qualification-job mismatch by three approaches and found that about one-third of the graduates are facing qualification-job mismatch. Similarly, more than one-fourth of the graduates are mismatched in skill, about half of them are over-skilled and the half are under-skilled. The analysis also shows that 11.3 percent of the graduates have irrelevant and 13.8 percent have slightly relevant jobs to their studied field of disciplines. Our analysis shows that over-qualified graduates face wage penalty under different approaches. After controlling skill heterogeneity, there is less penalty to apparently over-qualified and more penalty to genuinely over-qualified. The over-skilled graduates face wage penalties and the under-skilled get wage premiums as compared to the matched workers. A good field of study and job matches also improve the wages of graduates. JEL Classification: I23, I24, J21, J24, J31 Keywords: Education and Inequality, Higher Education, Human Capital, Labour Market, Wages

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Niazi, Kamran Ali Khan, Tamas Kerekes, Alberto Dolara, Yongheng Yang, and Sonia Leva. "Performance Assessment of Mismatch Mitigation Methodologies Using Field Data in Solar Photovoltaic Systems." Electronics 11, no. 13 (June 21, 2022): 1938. http://dx.doi.org/10.3390/electronics11131938.

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Partial shading and other non-ideal conditions cause electrical mismatches that reduce the output power generated by a photovoltaic (PV) system. It affects the overall performance and efficiency of PV systems. Therefore, a model is developed in MATLAB, which analyses the performance of the PV systems under real irradiance profiles and temperatures for various available mismatch mitigation methodologies, i.e., bypass diode, DC power optimizer, and differential power processing (DPP). More specifically, this study will help to understand the best mismatch reduction methodologies for a solar PV system under different scenarios. The results also are validated by comparing them with a similar PV system installed in SolarTechLAB, which also operates under the same irradiance and temperature conditions under which these models are tested. This study also presents novel results, covering discussions on the reverse voltage distribution under mismatch scenarios among bypass diode, DC power optimizer, and DPP techniques.

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Blount-Hill, Kwan-Lamar, and Victor St. John. "Manufactured “Mismatch”." Race and Justice 7, no. 2 (January 23, 2017): 110–26. http://dx.doi.org/10.1177/2153368716688741.

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Studies bear out that African Americans are drastically underrepresented in criminology and criminal justice doctoral programs and that, once admitted, they have lower-than-average rates of completion. On average, throughout their careers, African Americans are less likely to secure positions in the most prestigious programs; publish in the most highly regarded journals; or receive tenure, promotion, and compensation commensurate with their European American colleagues. One explanation is that the academy espouses ideals that disadvantage those from a Black cultural background. Through auto-ethnographic narratives, this article explores the ways in which criminology and criminal justice have adopted and reinforced a professional culture that may be incongruent with that of most Black academics. Borrowing from the tenets of critical race theory, we examine the ways in which the field imposes criteria for success counter to the cultural orientation of many African Americans. Finally, we argue the need for field-wide self-assessment and proactive measures to increase receptiveness to, and inclusion of, scholars who bring broader methodological and cultural lenses to both the academic discipline and the practical administration of justice.

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Chaudhry, Mumtaz Anwar, Rabia Khalid, and Rasim Özcan. "Determinants of Job Mismatch Among Graduates: A Case Study of Clerical Workers at Lahore, Pakistan." Akademika 92, no. 3 (October 28, 2022): 175–85. http://dx.doi.org/10.17576/akad-2022-9203-13.

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Job mismatch among graduates reflects inefficiencies in the labor market. An imbalance between the demand and supply of graduates in the labor market leads to a horizontal mismatch. Nations make progress based on knowledge and education but despite obtaining higher education individuals are unable to find a job related to their field of study. This phenomenon occurs when educational institutes produce a large number of graduates while on the other hand, the supply of graduates exceeds the demand for graduates. This study aims to find out the determinants of horizontal mismatch and to analyze the reasons why workers have accepted the mismatched job. By using the worker’s self-assessment method required data is collected from the clerical workers of public and private sector universities at Lahore in 2019. These universities include the University of the Punjab, Lahore, and the University of Management and Technology, Lahore. Results of Logistic Regression analysis concluded that cost of job search, asymmetric information, and methods used to find a job are the most important determinants of job-mismatch. This study has also analyzed the reasons why workers have accepted their present mismatched job. Findings concluded that individuals accepted mismatched-job due to pay and promotion opportunities and a good working environment. This study suggested establishing linkages between educational institutes and industries to better formulate the policy that reduces the extent of horizontal mismatch. Keywords: Job-mismatch; logistic regression; worker’s self-assessment approach; graduates; asymmetric information

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Le Gall, Yann, Francois-Xavier Socheleau, and Julien Bonnel. "Matched-Field Performance Prediction with Model Mismatch." IEEE Signal Processing Letters 23, no. 4 (April 2016): 409–13. http://dx.doi.org/10.1109/lsp.2016.2524645.

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9

Kudo, Noriko, Kiyoto Kasai, Kenji Itoh, Ichiro Koshida, Masato Yumoto, Masato Kato, Satoru Kamio, et al. "Comparison between mismatch negativity amplitude and magnetic mismatch field strength in normal adults." Biological Psychology 71, no. 1 (January 2006): 54–62. http://dx.doi.org/10.1016/j.biopsycho.2005.01.011.

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10

Kolosova, A. I., V. N. Rudakov, and S. Y. Roshchin. "The impact of jo-education match on graduate salaries and job satisfaction." Voprosy Ekonomiki, no. 11 (November 6, 2020): 113–32. http://dx.doi.org/10.32609/0042-8736-2020-11-113-132.

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The paper estimates the determinants and effects of the job–education field match on graduates’ salaries and job satisfaction taking the merged data from the Russian Labour Force Survey and the National Survey of Graduate Employment, both conducted in 2016. The authors use various measures of the horizontal job–education match: the respondents’ self-assessment and the objective measure derived from job and education fields codes from the corresponding classifiers. The analysis has shown that the probability of having a job in accordance with the received education is higher for graduates in the sphere of medical, computer and law sciences. There is a penalty for mismatched from 6% to 13% compared to those working accordingly the received diploma. The higher the degree of the mismatch - the greater the penalty. The size of penalty depends on major and on the match measure used. The study revealed the negative impact of the job–education horizontal mismatch on job satisfaction, which provides some evidence that the mismatch is mostly involuntary.

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Hasibuan, Ernawaty, and Dwini Handayani. "Pengaruh Qualification Mismatch terhadap Upah Tenaga Kerja Di Indonesia." Jurnal Ekonomi dan Pembangunan 29, no. 1 (August 26, 2021): 1–16. http://dx.doi.org/10.14203/jep.29.1.2021.1-16.

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Penelitian ini bertujuan untuk memeriksa kejadian qualification mismatch dan pengaruhnya terhadap upah tenaga kerja di Indonesia. Dengan menggunakan SAKERNAS 2018, qualification mismatch diidentifikasi menggunakan metode normatif. Vertical mismatch diperoleh dengan membandingkan tingkat pendidikan dan golongan pekerjaan (KBJI 1 digit), sedangkan horizontal mismatch membandingkan klasifikasi jurusan pendidikan (3 digit ISCED-F) dan klasifikasi jabatan (KBJI 3 digit). Pada tahun 2018, tenaga kerja yang mengalami undereducation berjumlah sebesar 4.6% dan overeducation sebesar 27.9%. Sedangkan kejadian field of study mismatch terjadi pada 68.4% tenaga kerja di Indonesia. Pengaruh qualification mismatch terhadap upah tenaga kerja diestimasi dengan menggunakan metode ordinary least square. Hasil menunjukkan bahwa terdapat wage premium sebesar 5.24%-6.24% pada tenaga kerja yang mengalami undereducation. Wage penalty sebesar 6.26%-7.50% diperoleh tenaga kerja yang mengalami overeducation, sedangkan yang mengalami field of study mismatch sebesar 5.89%-6.80%.

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12

Robert, Peter. "Job mismatch in early career of graduates under post-communism." International Journal of Manpower 35, no. 4 (July 1, 2014): 500–513. http://dx.doi.org/10.1108/ijm-05-2013-0113.

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Purpose – The purpose of this paper is to investigate vertical and horizontal mismatch between education and current occupation for graduates in four post-communist societies: Hungary, Poland, Lithuania and Slovenia. In this way it contributes to the field by exploring how mechanisms, known from previous studies on western societies, affect job mismatch in emerging market economies. Design/methodology/approach – Two dependent variables are constructed: working in a non-graduate occupation as defined by the ISCO job title depicts vertical mismatch; assessment of the job from the perspective of the fields of study describes horizontal mismatch. Since the dependent variables are dichotomous ones, binary logistic regression models are fitted to the data predicting the incidence of mismatch. Explanatory variables cover mechanisms affecting job mismatch: variation by fields of studies, accumulated work experience during studies, labour market uncertainties during early career, trade off between job safety and job mismatch, persistence of “bad” labour market entry during early career, influence of parental background on school-to-work transition. Findings – The analysis reveals significant differences for study fields in association with occupational specificity of the disciplines. Only study-related work experience seems to be advantageous to find a matching job. Labour market uncertainties increase the probability of job mismatch. Job safety is more important than a matching job. Originality/value – Mismatch in first occupation has strong and long-lasting effect on the job match even five years after the graduation. The effect of parental background on job mismatch is curvilinear.

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Gao, Ying Jun, Wen Quan Zhou, Yao Liu, Chuang Gao Huang, and Qiang Hua Lu. "Phase Field Crystal Modeling for Nanocrystalline Growth." Advanced Materials Research 785-786 (September 2013): 512–16. http://dx.doi.org/10.4028/www.scientific.net/amr.785-786.512.

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The two-mode phase field-crystal (PFC) method is used to simulate the nanograin growth, including the grain growth in different sets of crystal planes, the grain boundary structure with mismatch, the grain orientation and also the incoherent grain boundary in two dimensional plane. It is obviously observed that there are dislocation structures in nanograin boundary due to mismatch and misorientation of grains. These simulation results can not only be used in artificial controlling the grain boundary of nanograin, but also is of significant for designing new nanograin with a good grain boundary for structure materials.

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Zhang, Shun, He Xue, Shuai Wang, Yuman Sun, Fuqiang Yang, and Yubiao Zhang. "Effect of Mechanical Heterogeneity on Strain and Stress Fields at Crack Tips of SCC in Dissimilar Metal Welded Joints." Materials 14, no. 16 (August 9, 2021): 4450. http://dx.doi.org/10.3390/ma14164450.

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The crack tip strain and stress condition are one of the main factors affecting stress corrosion cracking (SCC) behaviors in the dissimilar metal welded joint of the primary circuit in the pressurized water reactor. The mechanical property mismatch of base metal and weld metal can significantly affect the stress and strain condition around the crack tip. To understand the effect of different weld metals on strain and stress fields at SCC crack tips, the effects of strength mismatch, work hardening mismatch, and their synergy on the strain and stress field of SCC in the bi-material interface, including plastic zone, stress state, and corresponding J-integral, are investigated in small-scale yielding using the finite element method. The results show a significant effect of the strength mismatch and work hardening mismatch on the plastic zone and stress state in the weld metal and a negligible effect in the base metal. J-integral decreases with the single increase in either strength mismatch or work hardening mismatch. Either the increase in strength mismatch or work hardening mismatch will inhibit the other’s effect on the J-integral, and a synthetic mismatch factor can express this synergistic effect.

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Zhang, Jun Hui, and Yan Wei Dai. "Quantification of Stress Field for Mixed Mode Creep Crack Considering Mismatch Effect." Applied Mechanics and Materials 853 (September 2016): 291–95. http://dx.doi.org/10.4028/www.scientific.net/amm.853.291.

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Accurate description of creep crack stress field is very important to characterize the creep crack growth of the structures at elevated temperature. In general, the crack mode in practical engineering practices is not mere the mode I or mode II, and it is the mixed mode. The mismatch effect in weldment is also concerned by many researchers, however, there is no available literatures to discuss the stress field of mixed mode creep crack yet. The overall aim of this paper is to investigate and qualify the distribution of stress field for the mixed mode creep crack. In this paper, a mixed mode creep crack within the mismatched plate is discussed. The stress distribution of mixed mode creep crack are given in this article. With the definition of mode mixity for creep crack, the influence of mode mixity on the stress field is presented. The influence of mismatch effect on the principal stress, open stress and shear stress for mixed mode creep crack is also figured out. The main factor leads to the variation of creep crack tip stress field for mixed creep crack is analyzed. Some useful guidelines are proposed for the engineering purpose of integrity assessment for the structure at high temperature.

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Bazanella, A. S., R. Reginatto, and R. Valiatti. "Robustness margins for global asymptotic stability in indirect field-oriented control of induction motors." Sba: Controle & Automação Sociedade Brasileira de Automatica 13, no. 3 (September 2002): 307–13. http://dx.doi.org/10.1590/s0103-17592002000300009.

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The influence of the rotor time constant mismatch on the stability of induction motors under indirect field oriented control is analyzed. The paper focuses on the global asymptotic stability property and extends the results of []. Robustness margins for global asymptotic stability with respect to rotor time constant mismatches are obtained. The effect of the PI settings in such robustness margins is clarified allowing to derive design guidelines. The methodology is applied to two different induction motor drive systems illustrating the stability margin estimates.

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Kessel, Ronald T. "Range‐dependent environmental mismatch in matched‐field tomography (MFT)." Journal of the Acoustical Society of America 103, no. 5 (May 1998): 2936. http://dx.doi.org/10.1121/1.422181.

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DelBalzo, Donald R., Robert S. Linzell, and Lisa A. Pflug. "Mismatch effects on passive matched‐field, thick‐sediment inversion." Journal of the Acoustical Society of America 120, no. 5 (November 2006): 3357. http://dx.doi.org/10.1121/1.4781462.

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Spehar-Deleze, Anna-Maria, Laurette Schmidt, Reinhard Neier, Sakari Kulmala, Nico de Rooij, and Milena Koudelka-Hep. "Electrochemiluminescent hybridization chip with electric field aided mismatch discrimination." Biosensors and Bioelectronics 22, no. 5 (December 2006): 722–29. http://dx.doi.org/10.1016/j.bios.2006.02.013.

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Zhang, J., Z. Chen, C. Cheng, and Y. X. Wang. "A phase field crystal model simulation of morphology evolution and misfit dislocation generation in nanoheteroepitaxy." Modern Physics Letters B 31, no. 30 (October 26, 2017): 1750283. http://dx.doi.org/10.1142/s0217984917502839.

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A phase field crystal (PFC) model is employed to study morphology evolution of nanoheteroepitaxy and misfit dislocation generation when applied with enhanced supercooling, lattice mismatch and substrate vicinal angle conditions. Misfit strain that rises due to lattice mismatch causes rough surfaces or misfit dislocations, deteriorates film properties, hence, efforts taken to reveal their microscopic mechanism are significant for film quality improvement. Uniform islands, instead of misfit dislocations, are developed in subcritical thickness film, serving as a way of strain relief by surface mechanism. Misfit dislocations generate when strain relief by surface mechanism is deficient in higher supercooling, multilayers of misfit dislocations dominate, but the number of layers reduces gradually when the supercooling is further enhanced. Rough surfaces like islands or cuspate pits are developed which is ascribed to lattice mismatch, multilayers of misfit dislocations generate to further enhance lattice mismatch. Layers of misfit dislocations generate at a thickening position at enhanced substrate vicinal angle, this further enhancing the angle leading to sporadic generation of misfit dislocations.

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BAL, GUILLAUME, and LENYA RYZHIK. "WAVE FIELD CORRELATIONS IN WEAKLY MISMATCHED RANDOM MEDIA." Stochastics and Dynamics 06, no. 03 (September 2006): 301–28. http://dx.doi.org/10.1142/s0219493706001773.

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This paper concerns the derivation of a Fokker–Planck equation for the correlation of two high frequency wave fields propagating in two different random media. The mismatch between the random media needs be small, on the order of the wavelength, and their correlation length needs be large relative to the wavelength. The loss of correlation caused by the mismatch in the random media is quantified and the limit process for the phase difference is obtained. The derivation is based on a random Liouville equation to model high frequency correlations and on the method of characteristics to characterize mixing in the random Liouville equation. Applications of such correlation loss include the monitoring in time of random media and the analysis of time reversed waves in changing heterogeneous domains.

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Bocharova, E. V. "SKILL MISMATCH PROBLEM AMONG RURAL WORKERS." Scientific Review: Theory and Practice 10, no. 9 (September 30, 2020): 2083–94. http://dx.doi.org/10.35679/2226-0226-2020-10-9-2083-2094.

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Existing mega-trends such as globalization, demographic change, rapid development of new technologies, changing work environment, development of ICT and the era of big data are leading to a growing gap in skills and competencies among present-day workers. “Skill mismatch” is an imbalance between skills and qualifications available in the labor market and those required in the workplace. The article presents a comprehensive analysis of the scientific literature on the problem of skill mismatch; it examines in detail domestic and foreign approaches to assessing skills mismatch, the choice of which is due to the classification of data on the supply and demand of skills: subjective, empirical, normative and work assessment method. An area is highlighted that requires a comprehensive study of this issue, namely the impact of over-qualification and insufficient qualification for workers employed in rural areas. The methodological basis of the study is the materials of the Comprehensive Survey of Living Conditions of the Population, conducted in 2018 by the Federal State Statistics Service (Rosstat). A survey of workers employed in rural areas of the country made it possible to correlate the existing level of qualifications and competencies with those required at the workplace. Awareness of the different types of skill mismatch, their interconnectedness, and different measurement issues enables policy decisions to be made to narrow the skill gap. The article attempts to analyze some of the types of mismatch that workers living in rural areas face, namely, “overeducation/undereducation”, “overskilling/underskilling”, “horizontal/field of study” mismatch. It is concluded that the skills of the labor force do not fully meet the rapidly changing needs of the economy, creating a serious barrier to the growth and development of the domestic economy.

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Smith, George B., and Nichalos D. Gardner. "Prediction of mismatch dependence and source depth dependence of mismatch‐induced peak broadening in matched‐field processing." Journal of the Acoustical Society of America 98, no. 5 (November 1995): 2934. http://dx.doi.org/10.1121/1.414127.

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He, Qi, Zhengang Zhao, Xiaoda Ye, Chuan Luo, Dacheng Zhang, Sifei Wang, and Xiaoping Xu. "Optical Coupling Efficiency of a Coupler with Double-Combined Collimating Lenses and Thermally Expanded Core Fibers." Micromachines 13, no. 2 (February 18, 2022): 324. http://dx.doi.org/10.3390/mi13020324.

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Improving the coupling efficiency of two optical signals is a hot issue, where the efficiency of optical coupling has a significant effect on the signal transmission over the fiber link. To this end, the Large-Beam Fiber Coupler (LBFC) with a Double-combined Collimating Lens (DCL) and a single-mode TEC fiber structure are proposed in this study. Based on the propagation principle of Gaussian beams and the coupling requirements, the coupling mechanism of the fiber coupler and the coupling mismatch between the coupler is analytically modeled. The model and the optical path are optimized, then the ray tracing is used to calculate the coupling efficiency of inter-coupler signals for different SMF. The coupling efficiency is evaluated through experiments in terms of coupling efficiency and the radial, axial, and angular mismatches between the couplers. The results showed that with a large Mode Field Diameter (MFD), better coupling efficiency can be obtained, i.e., a large MFD of 28 μm is tested with its maximal efficiency of 95.16%. Moreover, the angular mismatch has the most significant impact on the coupling efficiency, while the axial mismatch has the least. The use of large MFD can alleviate the angular mismatch and thus improve the optical coupling efficiency.

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CHAPMAN, N. R., and M. L. YEREMY. "MATCHED FIELD SOURCE LOCALIZATION WITH A HORIZONTAL LINE ARRAY." Journal of Computational Acoustics 02, no. 03 (September 1994): 315–25. http://dx.doi.org/10.1142/s0218396x94000208.

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Matched field source localization performance is investigated for a source in aft endfire of a horizontal line array operating in a deep water environment. Simulations are used to investigate the performance for ideal conditions and in the presence of noise. In particular, the effects of uncertainty in experimental geometry and mismatch in sound speed profile are considered. It is shown that the performance is sensitive to the vertical tilt of the array for relatively small tilt angles of less than 5º. However, the horizontal array is robust to mismatch in the gradient of the sound speed profile at the bottom of the water column. The results of the simulations are interpreted in terms of the characteristics of acoustic propagation in the environment.

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Nechanský, Tomáš, Tomáš Bořil, Alžběta Houzar, and Radek Skarnitzl. "The impact of mismatched recordings on an automatic-speaker-recognition system and human listeners." AUC PHILOLOGICA 2022, no. 1 (January 17, 2023): 11–22. http://dx.doi.org/10.14712/24646830.2022.25.

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The so-called ‘mismatch’ is a factor which experts in the forensic voice comparison field encounter regularly. Therefore, we decided to explore to what extent the automatic-speaker-recognition system’s and the earwitness’ ability to identify speakers is influenced when recordings are acquired in different languages and at different times. 100 voices in a database of 300 recordings (100 speakers recorded in three mutually mismatched sessions) were compared with an automatic-speaker-recognition software VOCALISE based on i-vectors and x-vectors, and by 39 respondents in simulated voice parades. Both the automatic and perceptual approach seem to have yielded similar results in that the less complex the mismatch type, the more successful the identification. The results point to the superiority of the x-vector approach, and also to varying identification abilities of listeners.

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Dicus, Ronald L. "An evaluation of matched field processor performance with environmental mismatch." Journal of the Acoustical Society of America 81, S1 (May 1987): S62—S63. http://dx.doi.org/10.1121/1.2024325.

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Byun, Gihoon, Hunter Akins, Hee-Chun Song, and William A. Kuperman. "Robust matched field processing for array tilt and environmental mismatch." Journal of the Acoustical Society of America 146, no. 4 (October 2019): 2962. http://dx.doi.org/10.1121/1.5137294.

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Byun, Gihoon, F. Hunter Akins, Kay L. Gemba, H. C. Song, and W. A. Kuperman. "Multiple constraint matched field processing tolerant to array tilt mismatch." Journal of the Acoustical Society of America 147, no. 2 (February 2020): 1231–38. http://dx.doi.org/10.1121/10.0000784.

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Ma, Jiayi, Ji Zhao, Jinwen Tian, Xiang Bai, and Zhuowen Tu. "Regularized vector field learning with sparse approximation for mismatch removal." Pattern Recognition 46, no. 12 (December 2013): 3519–32. http://dx.doi.org/10.1016/j.patcog.2013.05.017.

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Akatsuka, Kosuke, Toshiaki Wasaka, Hiroki Nakata, Tetsuo Kida, and Ryusuke Kakigi. "The effect of stimulus probability on the somatosensory mismatch field." Experimental Brain Research 181, no. 4 (May 22, 2007): 607–14. http://dx.doi.org/10.1007/s00221-007-0958-4.

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OZARD, JOHN M., PETER BROUWER, and TIM SCHEUER. "COMPARISON OF LINEAR AND ORTHOGONAL BEAMFORMER PERFORMANCE FOR THE 1993 MATCHED FIELD PROCESSING BENCHMARKS." Journal of Computational Acoustics 02, no. 03 (September 1994): 187–97. http://dx.doi.org/10.1142/s0218396x94000130.

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Results are presented for the Matched Field Processing (MFP) analysis of synthetic benchmark cases, performed by a comprehensive Acoustic Signal Processing (ASP) code used in a turnkey manner. The performance of the Generalized Bartlett Beamformer (GBB), Minimum Variance (MV), and Modified Reduced Minimum Variance (MRMV) processors incorporated in the ASP code were evaluated. Matches for replicas generated using normal mode and Parabolic Equation (PE) models produced virtually identical results. However, the choice of layered versus gradient models was shown to be a cause of sufficient mismatch and to alter the source position by several increments in range and depth if sufficiently fine layering was not employed. GBB and MRMV exhibit similar levels of robustness to mismatch, while MV showed its well-known sensitivity to mismatch. Our turnkey approach indicated that MFP techniques are relatively robust with respect to source detection and localization even when suboptimal modeling and processing parameters are used.

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Gao, Huajian. "Weight Function Analysis of Interface Cracks: Mismatch Versus Oscillation." Journal of Applied Mechanics 58, no. 4 (December 1, 1991): 931–38. http://dx.doi.org/10.1115/1.2897710.

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This paper has two goals. First, it is aimed at providing a fundamental understanding of the oscillatory behavior of an interface crack between two dissimilar materials from the viewpoint of the interface mismatch that results from the cracking. Second, we extend the Bueckner-Rice weight function method to facilitate the interface crack analysis. Using properties of the surface Green’s functions of a homogeneous solid and solutions obtained from weight function formulae, a mismatch analysis is carried out which indicates that the local mismatch near the crack tip results in the oscillatory near-tip field while the mismatch on the global scale leads to the corresponding stress intensity factors. For an oscillatory interface crack field, it is shown that, other than a few extra material constants, the interface weight function analysis is completely parallel to the well-developed homogeneous theory so that knowledge of one crack solution for a given bimaterial geometry is sufficient for determination of solutions under any other loading conditions.

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Su, L., L. Ma, and S. M. Guo. "Influence of Sound Speed Profile on Source Localization at Different Depths." Journal of Computational Acoustics 25, no. 02 (March 27, 2017): 1750026. http://dx.doi.org/10.1142/s0218396x17500266.

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The effect of sound speed profile (SSP) mismatch on source localization in shallow-water waveguides with a typical negative gradient (or thermocline) is studied numerically and experimentally. The results are interpreted using a normal mode model and a ray model. It is found that a matched-field processor is insensitive to SSP mismatch for sources above the thermocline. In addition, the sensitivity of the processor to SSP mismatch increases with the depth of sources above the thermocline.

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Wang, Zhiyong, Shishen Liu, Hao Sun, Jingjing Zhang, Ruyou Li, and Chen Liu. "The influence of color temperature mismatch in star simulator on positioning accuracy and magnitude measurement by star sensor." Journal of Physics: Conference Series 2132, no. 1 (December 1, 2021): 012034. http://dx.doi.org/10.1088/1742-6596/2132/1/012034.

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Abstract During the calibrating of star sensor, the calibration accuracy is greatly affected by the mismatch between the color temperature of the light and the to-be-measured star, which further affects the attitude measurement accuracy. This paper studied the near-infrared spectra of stars with different color temperatures, and analyzed the errors on star positioning and magnitude measurement of star sensor due to the color temperature mismatch. The results showed that in the central field of view, the spot centroid deviation caused by spectral mismatch is smaller than that in the edge field of view.And the defocus of the imaging surface also affects the spot centroid deviation. Besides, when calibrating with 6000K color temperature light, the maximum measurement error can reach -1.9126 magnitude.

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Guerriero, Pierluigi, Luigi Piegari, Renato Rizzo, and Santolo Daliento. "Mismatch Based Diagnosis of PV Fields Relying on Monitored String Currents." International Journal of Photoenergy 2017 (2017): 1–10. http://dx.doi.org/10.1155/2017/2834685.

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This paper presents a DC side oriented diagnostic method for photovoltaic fields which operates on string currents previously supplied by an appropriate monitoring system. The relevance of the work relies on the definition of an effective and reliable day-by-day target for the power that every string of the field should have produced. The procedure is carried out by comparing the instantaneous power produced by all solar strings having the same orientation and by attributing, as producible power for all of them, the maximum value. As figure of merit, the difference between the maximum allowed energy production (evaluated as the integral of the power during a defined time interval) and the energy actually produced by the strings is defined. Such a definition accounts for both weather and irradiance conditions, without needing additional sensors. The reliability of the approach was experimentally verified by analyzing the performance of two medium size solar fields that were monitored over a period of four years. Results allowed quantifying energy losses attributable to underperforming solar strings and precisely locating their position in the field.

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Thomsen, Trine Lund. "Irregular Migration: Mismatch between Conceptualizations and Lived Experiences." Qualitative Studies 3, no. 2 (September 11, 2012): 97–114. http://dx.doi.org/10.7146/qs.v3i2.7303.

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This article focuses on researching differences in relation to irregular migration and various methodological challenges and ethical considerations that arise when working in this type of research field. Due to the precarious character of the migration and the vulnerability of the migrants, a large degree of responsibility is placed on the researcher in order to refrain from harming the researched group(s) further. Yet, the need to access information about their life situations are of great importance to shed light on matters that otherwise would remain hidden and undisclosed. How do researchers recognize the implications of the methods used in researching irregular migration and other vulnerable people and sensitive subjects? How do we carry out research in this field without causing further harm to the subjects researched? What kind of differentiating categorization of migrants do researchers construct, produce and reproduce during the research process? This article addresses the above questions by looking at the construction and categorization of irregular migrants in both the research process and as the products of research conducted, using the biographical narrative method in order to obtain a deeper and more complex understanding of the social dynamics involved in the field of irregular migration.

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Shahidan, Asnida, and Russayani Ismail. "A CRITICAL REVIEW OF THE LITERATURE ON THE CONCEPT OF JOB MISMATCH AND OVEREDUCATION." JOURNAL OF ECONOMICS AND SUSTAINABILITY 3, No.1 (January 31, 2021): 33–41. http://dx.doi.org/10.32890/jes2021.3.1.4.

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Job-education mismatch and overeducation issues among graduates have been discussed extensively, specifically related to the incidents, determinants, methods of measurement, and the effects of the mismatch. Despite this, the concept of job-education mismatch itself is not clearly explained. Since understanding this concept has theoretical and practical implications, this paper provides a critical review of the job mismatch concept and relates it to overeducation, which is a type of job-education imbalance under a vertical mismatch. This study relies solely on the literature review and does not provide any empirical evidence related to these concepts. A few issues have been highlighted and worth considering for further deliberation. Firstly, even though job-education mismatch, overeducation, overqualification, and underemployment are interchangeably used, these concepts have quite a distinct meaning. Secondly, when individuals’ skills are considered in discussing vertical and horizontal mismatch, the scope of mismatch tends to be broader than that of overeducation. Thirdly, the discussion on overeducation tends to concentrate on the level of study imbalance and not on both the level and type of study. Fourthly, job-education imbalance by the field of study (horizontal mismatch) is not easily defined, and the discussion tends to be related to overeducation.

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Dai, Yan Wei, Ying Hua Liu, and Hao Feng Chen. "Mismatch Constraint Effect for Bimaterial Interfacial Creep Crack." Applied Mechanics and Materials 853 (September 2016): 286–90. http://dx.doi.org/10.4028/www.scientific.net/amm.853.286.

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Mismatch effect of weldments is important for the assessment of structural integrity at elevated temperature. The interfacial creep crack is a common model which can be found in lots of engineering practices. Recently, the constraint effect is also considered to be significant for the evaluation of creep crack growth under high temperature. In this paper, a model for bimaterial interfacial creep crack is introduced to study the mismatch constraint effect. The stress field for bimaterial interfacial creep crack is investigated. An M*-parameter is proposed to characterize the constraint effect caused by material mismatch for bimaterial creep crack. A comparison is made between the geometry constraint caused by specimen loading and mismatch constraint caused by inhomogeneous material.

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Schmidt, Henrik, A. B. Baggeroer, W. A. Kuperman, and E. K. Scheer. "Environmentally tolerant beamforming for high‐resolution matched field processing: Deterministic mismatch." Journal of the Acoustical Society of America 88, no. 4 (October 1990): 1851–62. http://dx.doi.org/10.1121/1.400208.

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Feuillade, C., D. R. Del Balzo, and Mary M. Rowe. "Environmental mismatch in shallow‐water matched‐field processing: Geoacoustic parameter variability." Journal of the Acoustical Society of America 85, no. 6 (June 1989): 2354–64. http://dx.doi.org/10.1121/1.397781.

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Gingras, Donald F. "Methods for predicting the sensitivity of matched‐field processors to mismatch." Journal of the Acoustical Society of America 86, no. 5 (November 1989): 1940–49. http://dx.doi.org/10.1121/1.398572.

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Diesch, Eugen, Silke Biermann, and Thomas Luce. "The magnetic mismatch field elicited by words and phonological non-words." NeuroReport 9, no. 3 (February 1998): 455–60. http://dx.doi.org/10.1097/00001756-199802160-00018.

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Dubois, Arnaud. "Focus defect and dispersion mismatch in full-field optical coherence microscopy." Applied Optics 56, no. 9 (March 20, 2017): D142. http://dx.doi.org/10.1364/ao.56.00d142.

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Li, Yang, and Zhong-Xian Zhao. "Stress-field pinning induced by the lattice mismatch in 123 phase." Physica C: Superconductivity 351, no. 1 (March 2001): 1–4. http://dx.doi.org/10.1016/s0921-4534(00)01677-4.

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Kreitschmann-Andermahr, Ilonka, Timm Rosburg, Ulrich Demme, Elke Gaser, Hannes Nowak, and Heinrich Sauer. "Effect of ketamine on the neuromagnetic mismatch field in healthy humans." Cognitive Brain Research 12, no. 1 (August 2001): 109–16. http://dx.doi.org/10.1016/s0926-6410(01)00043-x.

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Li, Yang, Ning Chen, and Zhongxian Zhao. "Stress-field pinning induced by lattice mismatch in Y-123 superconductors." Physica C: Superconductivity 224, no. 3-4 (May 1994): 391–95. http://dx.doi.org/10.1016/0921-4534(94)90277-1.

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SMITH, G. B., H. A. CHANDLER, C. FEUILLADE, and D. J. MORRIS. "SECTOR FOCUSING FOR ROBUST HIGH RESOLUTION ANALYSIS OF THE MATCHED FIELD PROCESSING WORKSHOP DATA SET." Journal of Computational Acoustics 02, no. 03 (September 1994): 199–215. http://dx.doi.org/10.1142/s0218396x94000142.

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Replica correlator, minimum variance distortionless response, and sector-focused processing are applied to the test data cases devised for the Matched Field Processing Workshop. The methods are compared on this data set and their performance is clearly delineated. In all the cases examined from the workshop data set which were appropriate for the application of sector-focused procedures (i.e. the presence of mismatch together with modal noise), sector-focused processing performed successfully. It located the source with robustness similar to the replica correlator processor, but with the higher resolution characteristic of minimum variance distortionless response processing. In all cases where replica correlator localizes correctly, sector focusing also localizes correctly and achieves higher resolution. Sector focusing always reduced signal gain degradation compared to minimum variance distortionless response processing. It also reduced signal gain degradation compared to replica correlator processing for the lowest signal-to-noise ratio case. However, significant range bias error was observed in sector-focused as well as replica correlator processing in the case with general mismatch and colored noise. Sector focusing was not applied to the case with sound speed mismatch but no colored noise.

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Casado-Román, Lorena, Guillermo V. Carbajal, David Pérez-González, and Manuel S. Malmierca. "Prediction error signaling explains neuronal mismatch responses in the medial prefrontal cortex." PLOS Biology 18, no. 12 (December 21, 2020): e3001019. http://dx.doi.org/10.1371/journal.pbio.3001019.

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The mismatch negativity (MMN) is a key biomarker of automatic deviance detection thought to emerge from 2 cortical sources. First, the auditory cortex (AC) encodes spectral regularities and reports frequency-specific deviances. Then, more abstract representations in the prefrontal cortex (PFC) allow to detect contextual changes of potential behavioral relevance. However, the precise location and time asynchronies between neuronal correlates underlying this frontotemporal network remain unclear and elusive. Our study presented auditory oddball paradigms along with “no-repetition” controls to record mismatch responses in neuronal spiking activity and local field potentials at the rat medial PFC. Whereas mismatch responses in the auditory system are mainly induced by stimulus-dependent effects, we found that auditory responsiveness in the PFC was driven by unpredictability, yielding context-dependent, comparatively delayed, more robust and longer-lasting mismatch responses mostly comprised of prediction error signaling activity. This characteristically different composition discarded that mismatch responses in the PFC could be simply inherited or amplified downstream from the auditory system. Conversely, it is more plausible for the PFC to exert top-down influences on the AC, since the PFC exhibited flexible and potent predictive processing, capable of suppressing redundant input more efficiently than the AC. Remarkably, the time course of the mismatch responses we observed in the spiking activity and local field potentials of the AC and the PFC combined coincided with the time course of the large-scale MMN-like signals reported in the rat brain, thereby linking the microscopic, mesoscopic, and macroscopic levels of automatic deviance detection.

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Peng, Hui, and Ying Hua Liu. "Characterization of Mismatch Constraint Effect for the Central Crack Plate under Biaxial Loading." Key Engineering Materials 795 (March 2019): 395–400. http://dx.doi.org/10.4028/www.scientific.net/kem.795.395.

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The effects of biaxial loading and creep mismatch on creep fracture parameter C(t) and constraint effect are investigated for the plane strain central crack plate. The studied biaxialities in this paper are limited to the range of [-1,1]. Based on the three-term asymptotic solution for creep crack tip field, the higher-order terms coefficient parameter A2(t) is introduced to characterize the creep mismatch constraint effect. The impacts of loading level on the parameter A2(t) for different biaxialities and creep mismatch factors are also examined in this paper. The result shows that the steady creep fracture parameter C* decreases with the increments of mismatch factor and biaxiality B. The creep constraint parameter A2(t) is insensitive to loading level for the creep mismatch crack plate under biaxial loading. The steady creep constraint parameter increases with the increments of biaxialities and decreases as m increases, which indicates the higher under-match plate with higher biaxiality has higher creep constraint effect.

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Journal articles on the topic 'Mismatch field'

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