WorldWideScience

Sample records for actuarial analysis

  1. Actuarial Studies

    Data.gov (United States)

    U.S. Department of Health & Human Services — The Office of the Actuary in the Centers for Medicare and Medicaid Services (CMS) from time to time conducts studies on various aspects of the Medicare and Medicaid...

  2. Actuarial life-table analysis of lower impacted wisdom teeth in general dental practice.

    Science.gov (United States)

    Fernandes, Marcelo José; Ogden, Graham Richard; Pitts, Nigel Berry; Ogston, Simon Alexander; Ruta, Danny Adolph

    2010-02-01

    The appropriateness of extraction of asymptomatic impacted third molars has been much debated and as a result the number of extractions has fallen in the UK in the past few years. As a direct consequence of this decrease more impacted third molars are left in situ and yet, little is known about the natural history of these teeth. The aim of this study was to create an actuarial life-table and related survival analysis that would shed light on the natural history of an impacted lower third molar. Panoramic radiographs taken in 14 different general dental practices in Scotland were analysed and matched with their respective case notes in order to generate a sample of patients with asymptomatic impacted lower third molars. Subjects were assessed to confirm the presence of impaction and absence of symptoms and then re-assessed 1 year later for the development of symptoms during the study period to relate the incidence of symptoms within 1 year in the sample studied to age. Logistic regression was used to construct a life table based on the survival of symptom-free teeth (independently of extraction) during the study period. The number of patients included in the study was 583 and 421 for the baseline and follow-up assessments respectively. The total number of teeth analysed in both appointments was 676; from those 37 (5.47%) were extracted during the study period. About 562 teeth (83.13%) survived the study period symptom-free. There was a statistically significant inverse association between the development of symptoms studied and age. There was no statistically significant association between extraction and age. The study indicates that older patients are less likely to develop the symptoms studied. In addition the authors believe that there is evidence to suggest that general dental practitioners might not be following current guidelines when deciding whether or not to extract an impacted lower third molar in the centres studied.

  3. South African Actuarial Journal

    African Journals Online (AJOL)

    South African Actuarial Journalis published by the Actuarial Society of South Africa (ASSA). It is issued free to members of ASSA and will also be made available to them on the Society's website for access via the Internet. The focus of SAAJ is on actuarial research–particularly, but not exclusively, on research of relevance to ...

  4. Prognostic Factors in Non-Small Cell Lung Cancer Less Than 3 Centimeters: Actuarial Analysis, Accumulative Incidence and Risk Groups.

    Science.gov (United States)

    Peñalver Cuesta, Juan C; Jordá Aragón, Carlos; Mancheño Franch, Nuria; Cerón Navarro, José A; de Aguiar Quevedo, Karol; Arrarás Martínez, Miguel; Vera Sempere, Francisco J; Padilla Alarcón, Jose D

    2015-09-01

    In TNM classification, factors determining the tumor (T) component in non-small cell lung cancer have scarcely changed over time and are still based solely on anatomical features. Our objective was to study the influence of these and other morphopathological factors on survival. A total of 263 patients undergoing lung resection due to stage I non-small cell lung cancer ≤3cm in diameter were studied. A survival analysis and competing-risk estimate study was made on the basis of clinical, surgical and pathological variables using actuarial analysis and accumulative incidence methods, respectively. A risk model was then generated from the results. Survival at 5 and 10 years was 79.8 and 74.3%, respectively. The best prognostic factors were presence of symptoms, smoking habit and FEV1>60%, number of resected nodes>7, squamous histology, absence of vascular invasion, absence of visceral pleural invasion and presence of invasion more proximal than the lobar bronchus. All these were statistically significant according to the actuarial method. The factor "age60%. Pleural invasion and vascular invasion determine survival or risk of death due to non-small cell lung cancer ≤3cm and can be used for generating a predictive risk model. Copyright © 2014 SEPAR. Published by Elsevier Espana. All rights reserved.

  5. An analysis of a three-factor model proposed by the Danish Society of Actuaries for forecasting and risk analysis

    DEFF Research Database (Denmark)

    Jørgensen, Peter Løchte; Slipsager, Søren Kærgaard

    2016-01-01

    This paper provides the explicit solution to the three-factor diffusion model recently proposed by the Danish Society of Actuaries to the Danish industry of life insurance and pensions. The solution is obtained by use of the known general solution to multidimensional linear stochastic differential...... the effect of choosing the exact simulation scheme over the traditional Euler approximation scheme frequently applied by practitioners, we carry out a simulation study. We show that due to its recursive nature, the Euler scheme becomes computationally expensive as it requires a small step size in order...

  6. Health insurance basic actuarial models

    CERN Document Server

    Pitacco, Ermanno

    2014-01-01

    Health Insurance aims at filling a gap in actuarial literature, attempting to solve the frequent misunderstanding in regards to both the purpose and the contents of health insurance products (and ‘protection products’, more generally) on the one hand, and the relevant actuarial structures on the other. In order to cover the basic principles regarding health insurance techniques, the first few chapters in this book are mainly devoted to the need for health insurance and a description of insurance products in this area (sickness insurance, accident insurance, critical illness covers, income protection, long-term care insurance, health-related benefits as riders to life insurance policies). An introduction to general actuarial and risk-management issues follows. Basic actuarial models are presented for sickness insurance and income protection (i.e. disability annuities). Several numerical examples help the reader understand the main features of pricing and reserving in the health insurance area. A short int...

  7. How Fair Is Actuarial Fairness?

    DEFF Research Database (Denmark)

    Landes, Xavier

    2015-01-01

    in exchange for the payment of premi- ums. In the insurance industry, the concept of actuarial fairness serves to establish what could be adequate, fair premiums. Accordingly, premiums paid by policyholders should match as closely as possible their risk exposure (i.e. their expected losses). Such premiums...... are the product of the probabilities of losses and the expected losses. This article presents a discussion of the fairness of actuarial fairness through three steps: (1) defining the concept based on its formulation within the insurance industry; (2) determining in which sense it may be about fairness; and (3......) raising some objections to the actual fairness of actu- arial fairness. The necessity of a normative evaluation of actuarial fairness is justified by the influence of the concept on the current reforms of public insurance systems and the fact that it highlights the question of the repartition of the gains...

  8. Computational Intelligence. Mortality Models for the Actuary

    NARCIS (Netherlands)

    Willemse, W.J.

    2001-01-01

    This thesis applies computational intelligence to the field of actuarial (insurance) science. In particular, this thesis deals with life insurance where mortality modelling is important. Actuaries use ancient models (mortality laws) from the nineteenth century, for example Gompertz' and Makeham's

  9. Mathematical and statistical methods for actuarial sciences and finance

    CERN Document Server

    Pizzi, Claudio

    2014-01-01

    The interaction between mathematicians and statisticians has been shown to be an effective approach for dealing with actuarial, insurance and financial problems, both from an academic perspective and from an operative one. The collection of original papers presented in this volume pursues precisely this purpose. It covers a wide variety of subjects in actuarial, insurance and finance fields, all treated in the light of the successful cooperation between the above two quantitative approaches. The papers published in this volume present theoretical and methodological contributions and their applications to real contexts. With respect to the theoretical and methodological contributions, some of the considered areas of investigation are: actuarial models; alternative testing approaches; behavioral finance; clustering techniques; coherent and non-coherent risk measures; credit scoring approaches; data envelopment analysis; dynamic stochastic programming; financial contagion models; financial ratios; intelli...

  10. Mathematical and statistical methods for actuarial sciences and finance

    CERN Document Server

    Sibillo, Marilena

    2014-01-01

    The interaction between mathematicians and statisticians working in the actuarial and financial fields is producing numerous meaningful scientific results. This volume, comprising a series of four-page papers, gathers new ideas relating to mathematical and statistical methods in the actuarial sciences and finance. The book covers a variety of topics of interest from both theoretical and applied perspectives, including: actuarial models; alternative testing approaches; behavioral finance; clustering techniques; coherent and non-coherent risk measures; credit-scoring approaches; data envelopment analysis; dynamic stochastic programming; financial contagion models; financial ratios; intelligent financial trading systems; mixture normality approaches; Monte Carlo-based methodologies; multicriteria methods; nonlinear parameter estimation techniques; nonlinear threshold models; particle swarm optimization; performance measures; portfolio optimization; pricing methods for structured and non-structured derivatives; r...

  11. Modern actuarial risk theory: using R

    NARCIS (Netherlands)

    Kaas, R.; Goovaerts, M.; Dhaene, J.; Denuit, M.

    2008-01-01

    Modern Actuarial Risk Theory -- Using R contains what every actuary needs to know about non-life insurance mathematics. It starts with the standard material like utility theory, individual and collective model and basic ruin theory. Other topics are risk measures and premium principles, bonus-malus

  12. Managing Actuaries\\' Professional Risk | Lowther | South African ...

    African Journals Online (AJOL)

    This paper describes a new concept, of vital importance to actuaries, which the authors have named \\'managing actuaries\\' professional risk\\'. Much has been written on the constituent elements of legal causation, risk management, indemnity insurance and professional conduct standards. This paper envisages an ...

  13. Market-consistent actuarial valuation

    CERN Document Server

    Wüthrich, Mario V

    2016-01-01

    This is the third edition of this well-received textbook, presenting powerful methods for measuring insurance liabilities and assets in a consistent way, with detailed mathematical frameworks that lead to market-consistent values for liabilities. Topics covered are stochastic discounting with deflators, valuation portfolio in life and non-life insurance, probability distortions, asset and liability management, financial risks, insurance technical risks, and solvency. Including updates on recent developments and regulatory changes under Solvency II, this new edition of Market-Consistent Actuarial Valuation also elaborates on different risk measures, providing a revised definition of solvency based on industry practice, and presents an adapted valuation framework which takes a dynamic view of non-life insurance reserving risk.

  14. Demand for actuarial resources in South Africa | Terblanche | South ...

    African Journals Online (AJOL)

    developments, such as international accounting standards and Solvency II, are creating demand. At the same time, emigration of actuaries and actuarial students creates shortages and a much tighter actuarial resource market. This paper covers the current demographics of the membership of the Actuarial Society of South ...

  15. Connecting clinical and actuarial prediction with rule-based methods

    NARCIS (Netherlands)

    Fokkema, M.; Smits, N.; Kelderman, H.; Penninx, B.W.

    2015-01-01

    Meta-analyses comparing the accuracy of clinical versus actuarial prediction have shown actuarial methods to outperform clinical methods, on average. However, actuarial methods are still not widely used in clinical practice, and there has been a call for the development of actuarial prediction

  16. Choosing the 'best' plan in a health insurance exchange: actuarial value tells only part of the story.

    Science.gov (United States)

    Lore, Ryan; Gabel, Jon R; McDevitt, Roland; Slover, Michael

    2012-08-01

    In the health insurance exchanges that will come online in 2014, consumers will be able to compare health plans with respect to actuarial value, or the percentage of health care costs that a plan would pay for a standard population. This analysis illustrates the out-of-pocket costs that might result from plans with various plan designs and actuarial values. We find that average out-of-pocket expense declines as actuarial values rise, but two plans with similar actuarial values can produce very different outcomes for a given person. The overall affordability of a plan also will be influenced by age rating, income-related premium subsidies, and out-of-pocket subsidies. Actuarial value is a useful starting point for selecting a plan, but it does not pinpoint which plan will produce the best overall value for a particular person.

  17. Strategic Curricular Decisions in Butler University's Actuarial Science Major

    Science.gov (United States)

    Wilson, Christopher James

    2014-01-01

    We describe specific curricular decisions employed at Butler University that have resulted in student achievement in the actuarial science major. The paper includes a discussion of how these decisions might be applied in the context of a new actuarial program.

  18. South African Actuarial Journal: Editorial Policies

    African Journals Online (AJOL)

    Editorial Advisory Panel: Anthony Asher (Australia) Gary Blumsohn (USA) Howard Bolnick (USA) David Bowie (UK) Barry Childs (South Africa) Rob Dorrington (South Africa) Peter Doyle (South Africa) Angus Macdonald (UK) Heather McLeod (New Zealand) Peter Withey, President of the Actuarial Society of South Africa.

  19. South African Actuarial Journal - Vol 4 (2004)

    African Journals Online (AJOL)

    The Conversion of Members' Rights in South African Retirement Funds from Defined Benefits to Defined Contributions and the Statutory Apportionment of the Resulting Actuarial Surplus · EMAIL FULL TEXT EMAIL FULL TEXT · DOWNLOAD FULL TEXT DOWNLOAD FULL TEXT. JP Andrew, 1-62 ...

  20. Towards best practice in the actuarial assessment of claims for ...

    African Journals Online (AJOL)

    This paper begins to record best practice in the actuarial assessment of claims for maintenance against deceased estates in South Africa. Although this is a small field of actuarial practice, it is in the public interest that generally accepted standards be agreed upon. The paper applies an actuarial quality framework to identify ...

  1. Actuarial considerations of medical malpractice evaluations in M&As.

    Science.gov (United States)

    Frese, Richard C

    2014-11-01

    To best project an actuarial estimate for medical malpractice exposure for a merger and acquisition, a organization's leaders should consider the following factors, among others: How to support an unbiased actuarial estimation. Experience of the actuary. The full picture of the organization's malpractice coverage. The potential for future loss development. Frequency and severity trends.

  2. 26 CFR 300.7 - Enrollment of enrolled actuary fee.

    Science.gov (United States)

    2010-04-01

    ... 26 Internal Revenue 18 2010-04-01 2010-04-01 false Enrollment of enrolled actuary fee. 300.7... AND ADMINISTRATION USER FEES § 300.7 Enrollment of enrolled actuary fee. (a) Applicability. This section applies to the initial enrollment of enrolled actuaries with the Joint Board for the Enrollment of...

  3. Actuarial Sciences Graduate Training Program (India-Waterloo ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    Actuarial Sciences Graduate Training Program (India-Waterloo). The explosive growth of India's economy has led to a proliferation of insurance companies and a dire need for actuarial professionals. The University of Waterloo (Ontario) Canada has established a program to build actuarial talent for India's financial services ...

  4. Punishing the lemon: the ethics of actuarial fairness.

    Science.gov (United States)

    Jha, Saurabh

    2012-12-01

    The Patient Protection and Affordable Care Act rejects the notion that actuarial fairness is a normative ideal. The author discusses the ethics of actuarial fairness and attempts to draw a distinction between actuarial fairness and moral fairness. The ethics of wellness programs are discussed with both actuarial fairness and moral fairness in mind. The potential tension between physicians and patients in the zealous pursuit of healthy goals is described. Finally, the logical end point of actuarial fairness with the widespread availability of genetic information is highlighted. Copyright © 2012 American College of Radiology. Published by Elsevier Inc. All rights reserved.

  5. Rationale for treating unruptured intracranial aneurysms: actuarial analysis of natural history risk versus treatment risk for coiling or clipping based on 14,050 patients in the Nationwide Inpatient Sample database.

    Science.gov (United States)

    Lawson, Matthew F; Neal, Daniel W; Mocco, J; Hoh, Brian L

    2013-01-01

    The treatment of small unruptured intracranial aneurysms has been questioned based on the results of the International Study of Unruptured Intracranial Aneurysms. Our objective was to compare natural history rupture risk versus treatment risk for coiling and clipping small unruptured aneurysms using data in the Nationwide Inpatient Sample database. Data for clipping and coiling of unruptured aneurysms was collected from the Nationwide Inpatient Sample from 2002-2008. Treatment risks were adjusted for age, gender, and medical comorbidities. Logistic regression models were used to create curves depicting the estimated probability of poor outcome as a function of patient age for clipping and coiling. These treatment risk curves were compared against natural history actuarial risk curves calculated from four prominent studies. There were 14,050 hospitalizations: 7439(53%) coiling; 6611(47%) clipping. For patients who underwent coiling or clipping, the mortality rate was 2.17% and 2.66%, and the morbidity rate was 2.16% and 4.75%, respectively. The adjusted risk of poor outcome from clipping and coiling, when modeled against most natural history studies, demonstrates a treatment benefit for clipping for patients <70 years and for coiling patients <81 years. Models using the International Study of Unruptured Intracranial Aneurysms data demonstrate a treatment benefit for clipping for patients <61 years and for coiling for patients <70 years. Both clipping and coiling of unruptured intracranial aneurysms are safe. This analysis demonstrates rationale for clipping small unruptured aneurysms in patients <61-70 years and coiling small unruptured aneurysms in patients <70-80 years. Treatment beyond these age ranges is associated with increased risk of poor outcome. Copyright © 2013 Elsevier Inc. All rights reserved.

  6. Development of an Actuarial Science Program at Salisbury University

    Science.gov (United States)

    Wainwright, Barbara A.

    2014-01-01

    This paper focuses on the development of an actuarial science track for the mathematics major at Salisbury University (SU). A timeline from the initial investigation into such a program through the proposal and approval processes is shared for those who might be interested in developing a new actuarial program. It is wise to start small and take…

  7. 42 CFR 403.258 - Statement of actuarial opinion.

    Science.gov (United States)

    2010-10-01

    ... 42 Public Health 2 2010-10-01 2010-10-01 false Statement of actuarial opinion. 403.258 Section 403.258 Public Health CENTERS FOR MEDICARE & MEDICAID SERVICES, DEPARTMENT OF HEALTH AND HUMAN SERVICES... standing of the American Academy of Actuaries; or (2) A person who has otherwise demonstrated his or her...

  8. Promoting quality in the actuarial assessment of quantum of ...

    African Journals Online (AJOL)

    This paper applies a quality framework theory to a field of actuarial practice. The paper is relevant to the professionalism of actuaries in general, and to those who assess the quantum of damages in particular. Quality framework theories propose that practitioners need to apply a range of technical and normative capabilities ...

  9. Education for actuarial quality must develop more than technical ...

    African Journals Online (AJOL)

    This paper is located in the field of actuarial professional education. It draws on current literature and empirical evidence to argue the need for developing generic 'normative' capabilities and values in the actuarial profession. The paper examines three themes of normative education for actuaries—the intended purpose of ...

  10. Jump tests for semimartingales | Hong | South African Actuarial ...

    African Journals Online (AJOL)

    This paper aims to introduce jump tests to the actuarial community. In actuarial science, semimartingales are extensively used in the models for interest rates, options, variable annuities and equity-linked annuities. Those models usually assume without justification that the underlying asset process follows a continuous ...

  11. Premium adjustment: actuarial analysis on epidemiological models ...

    African Journals Online (AJOL)

    In this paper, we analyse insurance premium adjustment in the context of an epidemiological model where the insurer's future financial liability is greater than the premium from patients. In this situation, it becomes extremely difficult for the insurer since a negative reserve would severely increase its risk of insolvency, ...

  12. Actuarial survival of a large Canadian cohort of preterm infants

    Directory of Open Access Journals (Sweden)

    Ohlsson Arne

    2005-11-01

    Full Text Available Abstract Background The increased survival of preterm and very low birth weight infants in recent years has been well documented but continued surveillance is required in order to monitor the effects of new therapeutic interventions. Gestation and birth weight specific survival rates most accurately reflect the outcome of perinatal care. Our aims were to determine survival to discharge for a large Canadian cohort of preterm infants admitted to the neonatal intensive care unit (NICU, and to examine the effect of gender on survival and the effect of increasing postnatal age on predicted survival. Methods Outcomes for all 19,507 infants admitted to 17 NICUs throughout Canada between January 1996 and October 1997 were collected prospectively. Babies with congenital anomalies were excluded from the study population. Gestation and birth weight specific survival for all infants with birth weight Results Survival to discharge at 24 weeks gestation was 54%, compared to 82% at 26 weeks and 95% at 30 weeks. In infants with birth weights 600–699, survival to discharge was 62%, compared to 79% at 700–799 g and 96% at 1,000–1,099 g. In infants born at 24 weeks gestational age, survival was higher in females but there were no significant gender differences above 24 weeks gestation. Actuarial analysis showed that risk of death was highest in the first 5 days. For infants born at 24 weeks gestation, estimated survival probability to 48 hours, 7 days and 4 weeks were 88 (CI 84,92%, 70 (CI 64, 76% and 60 (CI 53,66% respectively. For smaller birth weights, female survival probabilities were higher than males for the first 40 days of life. Conclusion Actuarial analysis provides useful information when counseling parents and highlights the importance of frequently revising the prediction for long term survival particularly after the first few days of life.

  13. 2nd International Congress on Actuarial Science and Quantitative Finance

    CERN Document Server

    Garrido, José; Jeanblanc, Monique

    2017-01-01

    Developed from the Second International Congress on Actuarial Science and Quantitative Finance, this volume showcases the latest progress in all theoretical and empirical aspects of actuarial science and quantitative finance. Held at the Universidad de Cartagena in Cartegena, Colombia in June 2016, the conference emphasized relations between industry and academia and provided a platform for practitioners to discuss problems arising from the financial and insurance industries in the Andean and Caribbean regions. Based on invited lectures as well as carefully selected papers, these proceedings address topics such as statistical techniques in finance and actuarial science, portfolio management, risk theory, derivative valuation and economics of insurance.

  14. ACTUARIAL TECHNIQUES TO ASSESS THE FINANCIAL PERFORMANCE. INSURANCE APPLICATIONS

    Directory of Open Access Journals (Sweden)

    CORINA IOANĂŞ

    2012-01-01

    Full Text Available The XXI century was marked by the convergence and harmonization, this century is distinguished in that it lays the foundation of accounting actuarial, which is characterized by up to date values and actuarial calculations . Actuarial accounting is reflected best in insurance system. In the market economy, insurance system is on one hand a means of protecting the business and property of citizens, on the other hand a business that generates profits. From this context, we can say that the subject of actuarial accounting is the measurement and recognition of assets and result of the change in time value of money. Time is an important variable considered in any economic decision investing and financing.

  15. THE ACCOUNTING POSTEMPLOYMENT BENEFITS BASED ON ACTUARIAL CALCULATIONS

    OpenAIRE

    Anna CEBOTARI

    2017-01-01

    The accounting post-employment benefits, based on actuarial calculations, at present remains a subject studied in Moldova only theoretically. Applying actuarial calculations of accounting in fact denotes its character of evolving. Because national accounting standards have been adapted to international, which, in turn, require the valuation of assets and debts at fair value, there is a need to draw up exact calculations on which stands the theory of probability and ...

  16. Valuing structured professional judgment: predictive validity, decision-making, and the clinical-actuarial conflict.

    Science.gov (United States)

    Falzer, Paul R

    2013-01-01

    Structured professional judgment (SPJ) has received considerable attention as an alternative to unstructured clinical judgment and actuarial assessment, and as a means of resolving their ongoing conflict. However, predictive validity studies have typically relied on receiver operating characteristic (ROC) analysis, the same technique commonly used to validate actuarial assessment tools. This paper presents SPJ as distinct from both unstructured clinical judgment and actuarial assessment. A key distinguishing feature of SPJ is the contribution of modifiable factors, either dynamic or protective, to summary risk ratings. With modifiable factors, the summary rating scheme serves as a prognostic model rather than a classification procedure. However, prognostic models require more extensive and thorough predictive validity testing than can be provided by ROC analysis. It is proposed that validation should include calibration and reclassification techniques, as well as additional measures of discrimination. Several techniques and measures are described and illustrated. The paper concludes by tracing the limitations of ROC analysis to its philosophical foundation and its origin as a statistical theory of decision-making. This foundation inhibits the performance of crucial tasks, such as determining the sufficiency of a risk assessment and examining the evidentiary value of statistical findings. The paper closes by noting a current effort to establish a viable and complementary relationship between SPJ and decision-making theory. Copyright © 2013 John Wiley & Sons, Ltd.

  17. THE ACCOUNTING POSTEMPLOYMENT BENEFITS BASED ON ACTUARIAL CALCULATIONS

    Directory of Open Access Journals (Sweden)

    Anna CEBOTARI

    2017-11-01

    Full Text Available The accounting post-employment benefits, based on actuarial calculations, at present remains a subject studied in Moldova only theoretically. Applying actuarial calculations of accounting in fact denotes its character of evolving. Because national accounting standards have been adapted to international, which, in turn, require the valuation of assets and debts at fair value, there is a need to draw up exact calculations on which stands the theory of probability and mathematical statistics. One of the main objectives of accounting information is reflected in its financial situations and providing internal and external users of the entity. Hence, arises the need to reflect highly reliable information that can be provided by applying actuarial calculations.

  18. 1st International Congress on Actuarial Science and Quantitative Finance

    CERN Document Server

    Garrido, José; Hernández-Hernández, Daniel; ICASQF

    2015-01-01

    Featuring contributions from industry and academia, this volume includes chapters covering a diverse range of theoretical and empirical aspects of actuarial science and quantitative finance, including portfolio management, derivative valuation, risk theory and the economics of insurance. Developed from the First International Congress on Actuarial Science and Quantitative Finance, held at the Universidad Nacional de Colombia in Bogotá in June 2014, this volume highlights different approaches to issues arising from industries in the Andean and Carribean regions. Contributions address topics such as Reverse mortgage schemes and urban dynamics, modeling spot price dynamics in the electricity market, and optimizing calibration and pricing with SABR models.

  19. 78 FR 773 - Hartford Financial Services Group, Inc., Commercial/Actuarial/Information Delivery Services (IDS...

    Science.gov (United States)

    2013-01-04

    ... Employment and Training Administration Hartford Financial Services Group, Inc., Commercial/Actuarial/ Information Delivery Services (IDS)/Corporate & Financial Reporting Group, Hartford, CT; Notice of Affirmative... workers of Hartford Financial Services Group, Inc., Commercial/ Actuarial/Information Delivery Services...

  20. A typology of models used in actuarial science | Thomson | South ...

    African Journals Online (AJOL)

    This paper proposes a categorisation of the models used in actuarial science. It illustrates the application of that categorisation by using it to classify numerous such models. It is suggested that this categorisation, together with the illustrative classification, may be used as a typology for the classification of other such models, ...

  1. The gender profile of the South African actuarial profession | Ramjee ...

    African Journals Online (AJOL)

    The aim of this paper is to contextualise the gender status of the South African actuarial profession, both historically and relative to elsewhere in the world, as well as to establish the current level of representation of women in the profession. The authors have investigated the extent to which women are represented in ...

  2. Toward an Actuarial Data Base for Special Education Interventions.

    Science.gov (United States)

    Mann, Lester; Kenowitz, Leonard A.

    1985-01-01

    Evaluations of special education interventions are different from research on medical interventions. Educational evaluations would be more useful if they applied an actuarial, or probability approach. Information should be collected over time and using various measures, thus increasing the available data. (GDC)

  3. 26 CFR 300.8 - Renewal of enrollment of enrolled actuary fee.

    Science.gov (United States)

    2010-04-01

    ... 26 Internal Revenue 18 2010-04-01 2010-04-01 false Renewal of enrollment of enrolled actuary fee...) PROCEDURE AND ADMINISTRATION USER FEES § 300.8 Renewal of enrollment of enrolled actuary fee. (a) Applicability. This section applies to the renewal of enrollment of enrolled actuaries with the Joint Board for...

  4. Connecting clinical and actuarial prediction with rule-based methods.

    Science.gov (United States)

    Fokkema, Marjolein; Smits, Niels; Kelderman, Henk; Penninx, Brenda W J H

    2015-06-01

    Meta-analyses comparing the accuracy of clinical versus actuarial prediction have shown actuarial methods to outperform clinical methods, on average. However, actuarial methods are still not widely used in clinical practice, and there has been a call for the development of actuarial prediction methods for clinical practice. We argue that rule-based methods may be more useful than the linear main effect models usually employed in prediction studies, from a data and decision analytic as well as a practical perspective. In addition, decision rules derived with rule-based methods can be represented as fast and frugal trees, which, unlike main effects models, can be used in a sequential fashion, reducing the number of cues that have to be evaluated before making a prediction. We illustrate the usability of rule-based methods by applying RuleFit, an algorithm for deriving decision rules for classification and regression problems, to a dataset on prediction of the course of depressive and anxiety disorders from Penninx et al. (2011). The RuleFit algorithm provided a model consisting of 2 simple decision rules, requiring evaluation of only 2 to 4 cues. Predictive accuracy of the 2-rule model was very similar to that of a logistic regression model incorporating 20 predictor variables, originally applied to the dataset. In addition, the 2-rule model required, on average, evaluation of only 3 cues. Therefore, the RuleFit algorithm appears to be a promising method for creating decision tools that are less time consuming and easier to apply in psychological practice, and with accuracy comparable to traditional actuarial methods. (c) 2015 APA, all rights reserved).

  5. Mathematical and Statistical Methods for Actuarial Sciences and Finance

    CERN Document Server

    Legros, Florence; Perna, Cira; Sibillo, Marilena

    2017-01-01

    This volume gathers selected peer-reviewed papers presented at the international conference "MAF 2016 – Mathematical and Statistical Methods for Actuarial Sciences and Finance”, held in Paris (France) at the Université Paris-Dauphine from March 30 to April 1, 2016. The contributions highlight new ideas on mathematical and statistical methods in actuarial sciences and finance. The cooperation between mathematicians and statisticians working in insurance and finance is a very fruitful field, one that yields unique  theoretical models and practical applications, as well as new insights in the discussion of problems of national and international interest. This volume is addressed to academicians, researchers, Ph.D. students and professionals.

  6. Actuarial Modeling of Life Insurance Using Decrement Models

    OpenAIRE

    Luptáková Iveta Dirgová; Bilíková Mária

    2014-01-01

    The aim of this paper is to elucidate decrement models and their use in actuarial calculations in life insurance. The first part deals with the most often used decrement model, the mortality table. The second part gives an example based on a simple model to illustrate the creation of a multi-valued decrement table using the data from the single-value tables for a group of decrements and their use in insurance mathematical calculations.

  7. Actuarial Modeling of Life Insurance Using Decrement Models

    Directory of Open Access Journals (Sweden)

    Luptáková Iveta Dirgová

    2014-07-01

    Full Text Available The aim of this paper is to elucidate decrement models and their use in actuarial calculations in life insurance. The first part deals with the most often used decrement model, the mortality table. The second part gives an example based on a simple model to illustrate the creation of a multi-valued decrement table using the data from the single-value tables for a group of decrements and their use in insurance mathematical calculations.

  8. Editorial: On Changing Jackets | Thomson | South African Actuarial ...

    African Journals Online (AJOL)

    No Abstract South African Actuarial Journal Vol. 8 2008: pp. 93-95. Full Text: EMAIL FULL TEXT EMAIL FULL TEXT · DOWNLOAD FULL TEXT DOWNLOAD FULL TEXT · http://dx.doi.org/10.4314/saaj.v8i1.24514 · AJOL African Journals Online. HOW TO USE AJOL... for Researchers · for Librarians · for Authors · FAQ's · More ...

  9. Actuarial neutrality and financial incentives for early retirement in the Austrian pension system

    OpenAIRE

    Christl, Michael; Kucsera, Dénes

    2016-01-01

    This paper studies actuarial neutrality in the Austrian pension system. It is often argued that actuarial neutrality constitutes an incentive for people to retire. We show that there are almost no financial incentives within the Austrian pension corridor, when we use the traditional definition of actuarial neutrality. Taking taxation into account, our results suggest that financial incentives for early retirement stem mainly from the Austrian tax system and not from the pension system itself.

  10. Of pacemakers and statistics: the actuarial method extended.

    Science.gov (United States)

    Dussel, J; Wolbarst, A B; Scott-Millar, R N; Obel, I W

    1980-01-01

    Pacemakers cease functioning because of either natural battery exhaustion (nbe) or component failure (cf). A study of four series of pacemakers shows that a simple extension of the actuarial method, so as to incorporate Normal statistics, makes possible a quantitative differentiation between the two modes of failure. This involves the separation of the overall failure probability density function PDF(t) into constituent parts pdfnbe(t) and pdfcf(t). The approach should allow a meaningful comparison of the characteristics of different pacemaker types.

  11. Human actuarial aging increases faster when back ground death rates are lower: a consequence of differential heterogeneity?

    Science.gov (United States)

    Hawkes, Kristen; Smith, Ken R.; Blevins, James K.

    2014-01-01

    Many analyses of human populations have found that age-specific mortality rates increase faster across most of adulthood when overall mortality levels decline. This contradicts the relationship often expected from Williams′ classic hypothesis about the effects of natural selection on the evolution of senescence. More likely, much of the within-species difference in actuarial aging is not due to variation in senescence, but to the strength of filters on the heterogeneity of frailty in older survivors. A challenge to this differential frailty hypothesis was recently posed by an analysis of life tables from historical European populations and traditional societies that reported variation in actuarial aging consistent with Williams′ hypothesis after all. To investigate the challenge, we reconsidered those cases and aging measures. Here we show that the discrepancy depends on Ricklefs′ aging rate measure,ω, which decreases as mortality levels drop because it is an index of mortality level itself, not the rate of increase in mortality with age. We also show unappreciated correspondence among the parameters of Gompertz–Makeham and Weibull survival models. Finally, we compare the relationships among mortality parameters of the traditional societies and the historical series, providing further suggestive evidence that differential heterogeneity has strong effects on actuarial aging. PMID:22220868

  12. 76 FR 17762 - Regulations Governing the Performance of Actuarial Services Under the Employee Retirement Income...

    Science.gov (United States)

    2011-03-31

    ... that the candidate receives a passing grade on that examination. However, an applicant who sat for a given examination prior to the effective date of these regulations will be deemed to have sat for such..., it notes that courses that include discussion of actuarial codes of conduct, actuarial...

  13. A Comparison of Logistic Regression, Neural Networks, and Classification Trees Predicting Success of Actuarial Students

    Science.gov (United States)

    Schumacher, Phyllis; Olinsky, Alan; Quinn, John; Smith, Richard

    2010-01-01

    The authors extended previous research by 2 of the authors who conducted a study designed to predict the successful completion of students enrolled in an actuarial program. They used logistic regression to determine the probability of an actuarial student graduating in the major or dropping out. They compared the results of this study with those…

  14. 42 CFR 440.340 - Actuarial report for benchmark-equivalent coverage.

    Science.gov (United States)

    2010-10-01

    ... 42 Public Health 4 2010-10-01 2010-10-01 false Actuarial report for benchmark-equivalent coverage... AND HUMAN SERVICES (CONTINUED) MEDICAL ASSISTANCE PROGRAMS SERVICES: GENERAL PROVISIONS Benchmark Benefit and Benchmark-Equivalent Coverage § 440.340 Actuarial report for benchmark-equivalent coverage. (a...

  15. 20 CFR 901.32 - Receipt of information concerning enrolled actuaries.

    Science.gov (United States)

    2010-04-01

    ... 20 Employees' Benefits 3 2010-04-01 2010-04-01 false Receipt of information concerning enrolled... Suspension or Termination of Enrollment § 901.32 Receipt of information concerning enrolled actuaries. If an... Guaranty Corporation, or a member of the Joint Board has reason to believe that an enrolled actuary has...

  16. 5 CFR 839.1119 - How is the actuarial reduction for TSP computed?

    Science.gov (United States)

    2010-01-01

    ... 5 Administrative Personnel 2 2010-01-01 2010-01-01 false How is the actuarial reduction for TSP... actuarial reduction for TSP computed? (a) The part of your TSP account on the date you retired that is... survivor benefit is not reduced for TSP if the retiree's rate was reduced. Survivor Benefits ...

  17. 77 FR 24233 - Actuarial Advisory Committee With Respect to the Railroad Retirement Account; Notice of Public...

    Science.gov (United States)

    2012-04-23

    ... From the Federal Register Online via the Government Publishing Office RAILROAD RETIREMENT BOARD Actuarial Advisory Committee With Respect to the Railroad Retirement Account; Notice of Public Meeting Notice is hereby given in accordance with Public Law 92-463 that the Actuarial Advisory Committee will...

  18. 75 FR 47650 - Actuarial Advisory Committee With Respect to the Railroad Retirement Account; Notice of Public...

    Science.gov (United States)

    2010-08-06

    ... From the Federal Register Online via the Government Publishing Office RAILROAD RETIREMENT BOARD Actuarial Advisory Committee With Respect to the Railroad Retirement Account; Notice of Public Meeting Notice is hereby given in accordance with Public Law 92-463 that the Actuarial Advisory Committee will...

  19. 76 FR 67774 - Actuarial Advisory Committee With Respect to the Railroad Retirement Account; Notice of Public...

    Science.gov (United States)

    2011-11-02

    ... From the Federal Register Online via the Government Publishing Office RAILROAD RETIREMENT BOARD Actuarial Advisory Committee With Respect to the Railroad Retirement Account; Notice of Public Meeting Notice is hereby given in accordance with Public Law 92-463 that the Actuarial Advisory Committee will...

  20. Different actuarial risk measures produce different risk rankings for sexual offenders.

    Science.gov (United States)

    Barbaree, Howard E; Langton, Calvin M; Peacock, Edward J

    2006-10-01

    Percentile ranks were computed for N=262 sex offenders using each of 5 actuarial risk instruments commonly used with adult sex offenders (RRASOR, Static-99, VRAG, SORAG, and MnSOST-R). Mean differences between percentile ranks obtained by different actuarial measures were found to vary inversely with the correlation between the actuarial scores. Following studies of factor analyses of actuarial items, we argue that the discrepancies among actuarial instruments can be substantially accounted for by the way in which the factor Antisocial Behavior and various factors reflecting sexual deviance are represented among the items contained in each instrument. In the discussion, we provide guidance to clinicians in resolving discrepancies between instruments and we discuss implications for future developments in sex offender risk assessment.

  1. A Note on Realistic Dividends in Actuarial Surplus Models

    Directory of Open Access Journals (Sweden)

    Benjamin Avanzi

    2016-10-01

    Full Text Available Because of the profitable nature of risk businesses in the long term, de Finetti suggested that surplus models should allow for cash leakages, as otherwise the surplus would unrealistically grow (on average to infinity. These leakages were interpreted as ‘dividends’. Subsequent literature on actuarial surplus models with dividend distribution has mainly focussed on dividend strategies that either maximise the expected present value of dividends until ruin or lead to a probability of ruin that is less than one (see Albrecher and Thonhauser, Avanzi for reviews. An increasing number of papers are directly interested in modelling dividend policies that are consistent with actual practice in financial markets. In this short note, we review the corporate finance literature with the specific aim of fleshing out properties that dividend strategies should ideally satisfy, if one wants to model behaviour that is consistent with practice.

  2. Has actuarial aging “slowed” over the past 250 years? A comparison of small-scale subsistence populations and European cohorts

    Science.gov (United States)

    Gurven, Michael; Fenelon, Andrew

    2012-01-01

    G.C. Williams’ 1957 hypothesis famously argues that higher age-independent, or “extrinsic”, mortality should select for faster rates of senescence. Long-lived species should therefore show relatively few deaths from extrinsic causes such as predation and starvation. Theoretical explorations and empirical tests of Williams’ hypothesis have flourished in the past decade but it has not yet been tested empirically among humans. We test Williams’ hypothesis using mortality data from subsistence populations and from historical cohorts from Sweden and England/Wales, and examine whether rates of actuarial aging declined over the past two centuries. We employ three aging measures: mortality rate doubling time (MRDT), Ricklef’s ω, and the slope of mortality hazard from ages sixty to seventy, m’60–70, and model mortality using both Weibull and Gompertz-Makeham hazard models. We find that (1) actuarial aging in subsistence societies is similar to that of early Europe, (2) actuarial senescence has slowed in later European cohorts, (3) reductions in extrinsic mortality associate with slower actuarial aging in longitudinal samples, and (4) men senesce more rapidly than women, especially in later cohorts. To interpret these results, we attempt to bridge population-based evolutionary analysis with individual-level proximate mechanisms. PMID:19220451

  3. Actuarial approach in a mixed fractional Brownian motion with jumps environment for pricing currency option

    National Research Council Canada - National Science Library

    Shokrollahi, Foad; Kılıçman, Adem

    2015-01-01

    This research aims to investigate the strategy of fair insurance premium actuarial approach for pricing currency option, when the value of foreign currency option follows the mixed fractional Brownian...

  4. Special Issue “Actuarial and Financial Risks in Life Insurance, Pensions and Household Finance”

    Directory of Open Access Journals (Sweden)

    Luca Regis

    2017-12-01

    Full Text Available The aim of the Special Issue is to address some of the main challenges individuals and companies face in managing financial and actuarial risks, when dealing with their investment/retirement or business-related decisions [...

  5. Mating Reverses Actuarial Aging in Female Queensland Fruit Flies.

    Directory of Open Access Journals (Sweden)

    Sarsha Yap

    Full Text Available Animals that have a long pre-reproductive adult stage often employ mechanisms that minimize aging over this period in order to preserve reproductive lifespan. In a remarkable exception, one tephritid fruit fly exhibits substantial pre-reproductive aging but then mitigates this aging during a diet-dependent transition to the reproductive stage, after which life expectancy matches that of newly emerged flies. Here, we ascertain the role of nutrients, sexual maturation and mating in mitigation of previous aging in female Queensland fruit flies. Flies were provided one of three diets: 'sugar', 'essential', or 'yeast-sugar'. Essential diet contained sugar and micronutrients found in yeast but lacked maturation-enabling protein. At days 20 and 30, a subset of flies on the sugar diet were switched to essential or yeast-sugar diet, and some yeast-sugar fed flies were mated 10 days later. Complete mitigation of actuarial aging was only observed in flies that were switched to a yeast-sugar diet and mated, indicating that mating is key. Identifying the physiological processes associated with mating promise novel insights into repair mechanisms for aging.

  6. Mating Reverses Actuarial Aging in Female Queensland Fruit Flies.

    Science.gov (United States)

    Yap, Sarsha; Fanson, Benjamin G; Taylor, Phillip W

    2015-01-01

    Animals that have a long pre-reproductive adult stage often employ mechanisms that minimize aging over this period in order to preserve reproductive lifespan. In a remarkable exception, one tephritid fruit fly exhibits substantial pre-reproductive aging but then mitigates this aging during a diet-dependent transition to the reproductive stage, after which life expectancy matches that of newly emerged flies. Here, we ascertain the role of nutrients, sexual maturation and mating in mitigation of previous aging in female Queensland fruit flies. Flies were provided one of three diets: 'sugar', 'essential', or 'yeast-sugar'. Essential diet contained sugar and micronutrients found in yeast but lacked maturation-enabling protein. At days 20 and 30, a subset of flies on the sugar diet were switched to essential or yeast-sugar diet, and some yeast-sugar fed flies were mated 10 days later. Complete mitigation of actuarial aging was only observed in flies that were switched to a yeast-sugar diet and mated, indicating that mating is key. Identifying the physiological processes associated with mating promise novel insights into repair mechanisms for aging.

  7. Modelización financiero-actuarial de un seguro de dependencia = Long Term Care Insurance Actuarial Model

    Directory of Open Access Journals (Sweden)

    Herranz Peinado, Patricia

    2008-01-01

    Full Text Available España ha seguido la tendencia de otros países en cuanto a la cobertura de las personas dependientes, es decir, aquellas que necesitan ayuda para realizar las tareas básicas de la vida diaria, y lo ha hecho mediante la aprobación de la Ley de Promoción de la Autonomía Personal y Atención a las personas en situación de Dependencia, que se basa en la financiación pública. A pesar de los esfuerzos para el desarrollo de la Ley, ésta no está dando los frutos que debiera haber dado y se hace necesaria la existencia de productos privados de cobertura que puedan atender a las necesidades de aquellos que los demandan. Dado los escasos estudios que sobre este tema existen todavía en nuestro país, el establecer una aproximación a las primas de un seguro privado de dependencia puede servir de referencia para el análisis de su comercialización por parte de las aseguradoras. En este trabajo se trata de analizar una serie de cuestiones que den respuesta a dos objetivos. Por una parte, establecer un modelo financiero-actuarial que sirva como apoyo en el diseño de productos privados que cubran la dependencia y, por otra, realizar una aproximación a las bases técnicas actuariales que lleven a la cuantificación de las primas. = Spain has followed the trend of other countries about long term care, that is, people who need help to perform the basic tasks of daily living. In December 2006, Spanish Parliament approved the law called Ley de Promoción de la Autonomía Personal y Atención a las personas en situación de Dependencia, with public financing. This law is not producing the expected results, and it makes necessary the existence of private insurance. Currently, there are few studies on long term care in our country. An approach to premiums of a private insurance can serve as reference for the studies by insurers. This work tries to study a series of questions responding simultaneously to two goals, establishing an actuarial model and, on

  8. MODELIZACIÓN ACTUARIAL DE LAS NUEVAS PRESTACIONES SOCIALES EN VENEZUELA

    Directory of Open Access Journals (Sweden)

    Evaristo Diz Cruz

    2014-05-01

    Full Text Available En el presente paper se trata el tema de la valoración actuarial del nuevo esquema de prestaciones sociales contempladas en la nueva Ley Orgánica del Trabajo de Venezuela . Se desarrolla un modelo actuarial en detalle y se ilustra con un ejemplo numérico el impacto en temas de pasivo actuarial para una empresa típica. Besides the usual pension benefits the pension plan of a company may be forced by law in some countries to offer wage based Lump-sum payments for labor termination this is the Venezuela case. An actuarial model of funding severance payment liabilities is formulated and studied. All formulas involved are explained in detail. Finally a specific numerical example illustrates the dynamics of the liabilities determined by the Projected Unit Credit Method for a typical Venezuelan company within the new Labor Law context a Venezuelan accounting College is promoting Actuarial Valuations of this contingencies as mandatory so this model can be used for it.

  9. Actuarial senescence in a long-lived orchid challenges our current understanding of ageing

    DEFF Research Database (Denmark)

    Dahlgren, Johan; Colchero, Fernando; Jones, Owen

    2016-01-01

    The dominant evolutionary theory of actuarial senescence – an increase in death rate with advancing age – is based on the concept of a germ cell line that is separated from the somatic cells early in life. However, such a separation is not clear in all organisms. This has been suggested to explain......, for individuals under two types of land-use, in two climatic regions. The mortality trajectory was best-approximated by a Weibull model, showing clear actuarial senescence. Rates of senescence in this model declined with advancing age, but were slightly higher in mown plots and in the more benign climatic region....... At older ages, senescence was evident only when accounting for a positive effect of reproductive investment on mortality. Our results demonstrate actuarial senescence as well as a survival-reproduction trade-off in plants, and indicate that environmental context may influence senescence rates...

  10. Monitoring Actuarial Present Values of Term Life Insurance By a Statistical Process Control Chart

    Science.gov (United States)

    Hafidz Omar, M.

    2015-06-01

    Tracking performance of life insurance or similar insurance policy using standard statistical process control chart is complex because of many factors. In this work, we present the difficulty in doing so. However, with some modifications of the SPC charting framework, the difficulty can be manageable to the actuaries. So, we propose monitoring a simpler but natural actuarial quantity that is typically found in recursion formulas of reserves, profit testing, as well as present values. We shared some simulation results for the monitoring process. Additionally, some advantages of doing so is discussed.

  11. The lifecontingencies Package: Performing Financial and Actuarial Mathematics Calculations in R

    Directory of Open Access Journals (Sweden)

    Giorgio Alfredo Spedicato

    2013-11-01

    Full Text Available It is possible to model life contingency insurances with the lifecontingencies R package, which is capable of performing financial and actuarial mathematics calculations. Its functions permit one to determine both the expected value and the stochastic distribution of insured benefits. Therefore, life insurance coverage can be priced and portfolios risk-based capital requirements can be assessed. This paper briefly summarizes the theory regarding life contingencies that is based on financial mathematics and demographic con- cepts. Then, with the aid of applied examples, it shows how the lifecontingencies package can be a useful tool for executing routine, deterministic, or stochastic calculations for life-contingencies actuarial mathematics.

  12. 20 CFR 200.9 - Selection of members of Actuarial Advisory Committee.

    Science.gov (United States)

    2010-04-01

    ... 20 Employees' Benefits 1 2010-04-01 2010-04-01 false Selection of members of Actuarial Advisory Committee. 200.9 Section 200.9 Employees' Benefits RAILROAD RETIREMENT BOARD GENERAL ADMINISTRATION GENERAL... any organization formed jointly by the express companies, sleeping-car companies and carriers by...

  13. Factors Associated With Subjective Life Expectancy: Comparison With Actuarial Life Expectancy.

    Science.gov (United States)

    Bae, Jaekyoung; Kim, Yeon-Yong; Lee, Jin-Seok

    2017-07-01

    Subjective life expectancy (SLE) has been found to show a significant association with mortality. In this study, we aimed to investigate the major factors affecting SLE. We also examined whether any differences existed between SLE and actuarial life expectancy (LE) in Korea. A cross-sectional survey of 1000 individuals in Korea aged 20-59 was conducted. Participants were asked about SLE via a self-reported questionnaire. LE from the National Health Insurance database in Korea was used to evaluate differences between SLE and actuarial LE. Age-adjusted least-squares means, correlations, and regression analyses were used to test the relationship of SLE with four categories of predictors: demographic factors, socioeconomic factors, health behaviors, and psychosocial factors. Among the 1000 participants, women (mean SLE, 83.43 years; 95% confidence interval, 82.41 to 84.46 years; 48% of the total sample) had an expected LE 1.59 years longer than that of men. The socioeconomic factors of household income and housing arrangements were related to SLE. Among the health behaviors, smoking status, alcohol status, and physical activity were associated with SLE. Among the psychosocial factors, stress, self-rated health, and social connectedness were related to SLE. SLE had a positive correlation with actuarial estimates (r=0.61, p actuarial LE. Demographic factors, socioeconomic factors, health behaviors, and psychosocial factors showed significant associations with SLE, in the expected directions. Further studies are needed to determine the reasons for these results.

  14. Academic Attributes of College Freshmen that Lead to Success in Actuarial Studies in a Business College

    Science.gov (United States)

    Smith, Richard Manning; Schumacher, Phyllis

    2006-01-01

    The authors studied beginning undergraduate actuarial concentrators in a business college. They identified four variables (math Scholastic Aptitude Test [SAT] score, verbal SAT score, percentile rank in high school graduating class, and percentage score on a college mathematics placement exam) that were available for entering college students that…

  15. The longevity risk of the Dutch Actuarial Association’s projection model

    NARCIS (Netherlands)

    F. Peters (Frederick); W.J. Nusselder (Wilma); J.P. Mackenbach (Johan)

    2012-01-01

    markdownabstractAccurate assessment of the risk that arises from further increases in life expectancy is crucial for the financial sector, in particular for pension funds and life insurance companies. The Dutch Actuarial Association presented a revised projection model in 2010, while in the same

  16. The effect of framing actuarial risk probabilities on involuntary civil commitment decisions.

    Science.gov (United States)

    Scurich, Nicholas; John, Richard S

    2011-04-01

    Despite a proliferation of actuarial risk assessment instruments, empirical research on the communication of violence risk is scant and there is virtually no research on the consumption of actuarial risk assessment. Using a 2 × 3 Latin Square factorial design, this experiment tested whether decision-makers are sensitive to varying levels of risk expressed probabilistically and whether the framing of actuarial risk probabilities is consequential for commitment decisions. Consistent with research on attribute framing, in which describing an attribute in terms of its complement leads to different conclusions, this experiment found that the way actuarial risk estimates are framed leads to disparate commitment decisions. For example, risk framed as 26% probability of violence generally led decision-makers to authorize commitment, whereas the same risk framed in the complement, a 74% probability of no violence, generally led decision-makers to release. This result was most pronounced for moderate risk levels. Implications for the risk communication format debate, forensic practice and research are discussed.

  17. A multiple Markov switching model for actuarial use in South Africa ...

    African Journals Online (AJOL)

    The framework is used to estimate a multiple Markov switching (MMS) model of South African financial and economic variables, which can be used for various actuarial applications, especially those involving long-term projections. Users may wish to set certain parameters in relation to future expectations rather than simply ...

  18. From Meehl (1954) to fast and frugal heuristics (and back) : new insights into how to bridge the clinical-actuarial divide

    OpenAIRE

    Konstantinos V. Katsikopoulos; Pachur, Thorsten; Machery, Edouard; Wallin, Annika

    2008-01-01

    It is difficult to overestimate Paul Meehl’s influence on judgment and decision-making research. His ‘disturbing little book’ (Meehl, 1986, p. 370) Clinical versus Statistical Prediction: A Theoretical Analysis and a Review of the Evidence (1954) is known as an attack on human judgment and a call for replacing clinicians with actuarial methods. More than 40 years later, fast and frugal heuristics—proposed as models of human judgment—were formalized, tested, and found to be surprisingly accura...

  19. Age distributions of Greenlandic dwarf shrubs support concept of negligible actuarial senescence

    DEFF Research Database (Denmark)

    Dahlgren, Johan; Rizzi, Silvia; Schweingruber, Fritz

    2016-01-01

    Many plants and sessile animals may not show actuarial senescence, the increase in mortality with age predicted to be ubiquitous by classic evolutionary theories of aging. Age-structured demographic information is, however, limited for most organisms. We assessed the age distributions of nine dwarf...... shrub species from 863 taproot samples collected in coastal east Greenland. Penalized composite link models (pclm) were used to fill gaps in the observed age ranges, caused by low species-specific sample sizes in relation to life span. Resulting distributions indicate that mortality patterns...... are independent of age. Actuarial senescence is thus negligible in these dwarf shrub populations. We suggest that smoothing techniques such as pclm enable consideration of noisy age data for determining age distributions. These distributions may, in turn, reveal age effects on demographic rates. Moreover, age...

  20. Stochastic Interest Model Based on Compound Poisson Process and Applications in Actuarial Science

    Directory of Open Access Journals (Sweden)

    Shilong Li

    2017-01-01

    Full Text Available Considering stochastic behavior of interest rates in financial market, we construct a new class of interest models based on compound Poisson process. Different from the references, this paper describes the randomness of interest rates by modeling the force of interest with Poisson random jumps directly. To solve the problem in calculation of accumulated interest force function, one important integral technique is employed. And a conception called the critical value is introduced to investigate the validity condition of this new model. We also discuss actuarial present values of several life annuities under this new interest model. Simulations are done to illustrate the theoretical results and the effect of parameters in interest model on actuarial present values is also analyzed.

  1. Actuarial status of the Hospital Insurance and Supplementary Medical Insurance Trust Funds.

    Science.gov (United States)

    King, R E

    1983-10-01

    This article, adapted from a summary of the 1983 Annual Reports of the Medicare Boards of Trustees, presents the present and projected future actuarial status of the Hospital Insurance (HI) and Supplementary Medical Insurance (SMI) Trust Funds following the enactment of the Tax Equity and Fiscal Responsibility Act of 1982 and the Social Security Amendments of 1983. Although the Trustees characterize the outlook for the HI Trust Fund as slightly more optimistic than it was a year earlier, they report that the fund may be exhausted sometime between 1988 and 1996 unless benefits under the HI part of Medicare are reduced or financing is improved. The SMI Trust Fund, which is financed by premiums adjusted each year to reflect actual experience and by general revenue contributions, is characterized as actuarially sound. The Trustees note, however, the growing extent to which general revenue financing is becoming the major source of income for the SMI part of Medicare.

  2. Alice in actuarial-land: through the looking glass of changing Static-99 norms.

    Science.gov (United States)

    Sreenivasan, Shoba; Weinberger, Linda E; Frances, Allen; Cusworth-Walker, Sarah

    2010-01-01

    The Static-99, an actuarial rating method, is employed to conduct sexual violence risk assessment in legal contexts. The proponents of the Static-99 dismiss clinical judgment as not empirical. Two elements must be present to apply an actuarial risk model to a specific individual: sample representativeness and uniform measurement of outcome. This review demonstrates that both of these elements are lacking in the normative studies of the Static-99 and its revised version, the Static-99R. Studies conducted since the publication of the Static-99 have not replicated the original norms. Sexual recidivism rates for the same Static-99 score vary widely, from low to high, depending on the sample used. A hypothetical case example is presented to illustrate how the solitary application of the Static-99 or Static-99R recidivism rates to the exclusion of salient clinical factors for identifying sexual dangerousness can have serious consequences for public safety.

  3. [Survival functions and life tables at the origins of actuarial mathematics].

    Science.gov (United States)

    Spelta, D

    1997-01-01

    "In the determination of death probabilities of an insured subject one can use either statistical data or a mathematical function. In this paper a survey of the relationship between mortality tables and survival functions from the origins until the first half of the nineteenth century is presented. The author has tried to find the methodological grounds which have induced the actuaries to prefer either of these tools." (EXCERPT)

  4. Actuarial modeling of cost of voluntary pension insurance of the population of the region

    Directory of Open Access Journals (Sweden)

    Mikhailova Svetlana Sergeevna

    2013-06-01

    Full Text Available In article approach to determination of net value of the contract of pension insurance for the man's and female population, considering regional demographic features is offered. Results of actuarial calculation of the size pure net - rates of individual pension insurance are presented, "sensitivity" of cost of insurance is defined by methods of statistical modeling to key parameters of a pension product for the region population.

  5. Stochastic Actuarial Modelling of a Defined-Benefit Social Security Pension Scheme: An Analytical Approach

    OpenAIRE

    Iyer, Subramaniam

    2017-01-01

    Among the systems in place in different countries for the protection of the population against the long-term contingencies of old-age (or retirement), disability and death (or survivorship), defined-benefit social security pension schemes, i.e. social insurance pension schemes, by far predominate, despite the recent trend towards defined-contribution arrangements in social security reforms. Actuarial valuations of these schemes, unlike other branches of insurance, continue to be carried out a...

  6. Factors Associated With Subjective Life Expectancy: Comparison With Actuarial Life Expectancy

    Directory of Open Access Journals (Sweden)

    Jaekyoung Bae

    2017-07-01

    Full Text Available Objectives Subjective life expectancy (SLE has been found to show a significant association with mortality. In this study, we aimed to investigate the major factors affecting SLE. We also examined whether any differences existed between SLE and actuarial life expectancy (LE in Korea. Methods A cross-sectional survey of 1000 individuals in Korea aged 20-59 was conducted. Participants were asked about SLE via a self-reported questionnaire. LE from the National Health Insurance database in Korea was used to evaluate differences between SLE and actuarial LE. Age-adjusted least-squares means, correlations, and regression analyses were used to test the relationship of SLE with four categories of predictors: demographic factors, socioeconomic factors, health behaviors, and psychosocial factors. Results Among the 1000 participants, women (mean SLE, 83.43 years; 95% confidence interval, 82.41 to 84.46 years; 48% of the total sample had an expected LE 1.59 years longer than that of men. The socioeconomic factors of household income and housing arrangements were related to SLE. Among the health behaviors, smoking status, alcohol status, and physical activity were associated with SLE. Among the psychosocial factors, stress, self-rated health, and social connectedness were related to SLE. SLE had a positive correlation with actuarial estimates (r=0.61, p<0.001. Gender, household income, history of smoking, and distress were related to the presence of a gap between SLE and actuarial LE. Conclusions Demographic factors, socioeconomic factors, health behaviors, and psychosocial factors showed significant associations with SLE, in the expected directions. Further studies are needed to determine the reasons for these results.

  7. Factors Associated With Subjective Life Expectancy: Comparison With Actuarial Life Expectancy

    OpenAIRE

    Bae, Jaekyoung; Kim, Yeon-Yong; Lee, Jin-Seok

    2017-01-01

    Objectives Subjective life expectancy (SLE) has been found to show a significant association with mortality. In this study, we aimed to investigate the major factors affecting SLE. We also examined whether any differences existed between SLE and actuarial life expectancy (LE) in Korea. Methods A cross-sectional survey of 1000 individuals in Korea aged 20-59 was conducted. Participants were asked about SLE via a self-reported questionnaire. LE from the National Health Insurance database in Kor...

  8. Model-Based and Nonparametric Approaches to Clustering for Data Compression in Actuarial Applications

    OpenAIRE

    O'Hagan, Adrian; Ferrari, Colm

    2016-01-01

    Clustering is used by actuaries in a data compression process to make massive or nested stochastic simulations practical to run. A large data set of assets or liabilities is partitioned into a user-defined number of clusters, each of which is compressed to a single representative policy. The representative policies can then simulate the behavior of the entire portfolio over a large range of stochastic scenarios. Such processes are becoming increasingly important in understanding product behav...

  9. Current obstacles in replicating risk assessment findings: a systematic review of commonly used actuarial instruments.

    Science.gov (United States)

    Rossegger, Astrid; Gerth, Juliane; Seewald, Katharina; Urbaniok, Frank; Singh, Jay P; Endrass, Jérôme

    2013-01-01

    An actuarial risk assessment instrument can be considered valid if independent investigations using novel samples can replicate the findings of the instrument's development study. In order for a study to qualify as a replication, it has to adhere to the methodological protocol of the development study with respect to key design characteristics, as well as ensuring that manual-recommended guidelines of test administration have been followed. A systematic search was conducted to identify predictive validity studies (N = 84) on three commonly used actuarial instruments: the Violence Risk Appraisal Guide (VRAG), the Sex Offender Risk Appraisal Guide (SORAG), and the Static-99. Sample (sex, age, criminal history) and design (follow-up, attrition, recidivism) characteristics, as well as markers of assessment integrity (scoring reliability, item omissions, prorating procedure), were extracted from 84 studies comprising 108 samples. None of the replications matched the development study of the instrument they were attempting to cross-validate with respect to key sample and design characteristics. Furthermore none of the replications strictly followed the manual-recommended guidelines for the instruments' administration. Additional replication studies that follow the methodological protocols outlined in actuarial instruments' development studies are needed before claims of generalizability can be made. Copyright © 2013 John Wiley & Sons, Ltd.

  10. Actuarial Evaluation of Pension Risks of Russia: from Theory to Practice

    Directory of Open Access Journals (Sweden)

    Aleksandr Anatolyevich Kuklin

    2017-09-01

    Full Text Available The article discusses the origins of the development of pension systems in the world, shows the causes of the emergence of various models of public pension provision. We pay a particular attention to the history of the formation of the Russian pension system, and analyse the stages and causes of modern reform. From the position of modern legislation, we systemise the forms, types of pension provision and pension insurance in the Russian Federation from the point of view of the sources of financing and subjects of pension relations. The authors have defined the concept of “actuarial evaluation” from the point of view of the process and system approach. We have revealed the content of the pension risk category, as well as classified the pension risks by the spheres of origin. The authors have developed the methodology of actuarial estimation of the risks of the pension system classified by different criteria: demographic, economic, financial, labor risks. The proposed methodological approach to the evaluation of pension risks is based on the comprehensive assessment of socio-economic indicators and the identification of dependencies between socio-demographic and economic processes in the pension system and economy of the country. The authors have tested the developed tools on the actuarial estimation of the pension risks of the Russian Federation. The article presents the results of calculations and identifies critical risks for the Russian pension system. We have proved that stagnation processes in the economy and a high share of the shadow economy represent the greatest threat to the Russian pension system in the short term, whereas, the aging of the population and the increase in life expectancy — in the long term.

  11. Natural history of intraductal papillary mucinous tumors of the pancreas: actuarial risk of malignancy.

    Science.gov (United States)

    Lévy, Philippe; Jouannaud, Vincent; O'Toole, Dermot; Couvelard, Anne; Vullierme, Marie Pierre; Palazzo, Laurent; Aubert, Alain; Ponsot, Philippe; Sauvanet, Alain; Maire, Frédérique; Hentic, Olivia; Hammel, Pascal; Ruszniewski, Philippe

    2006-04-01

    Natural history of intraductal papillary mucinous tumors of the pancreas (IPMTs) is unknown. Cross-sectional studies suggest that exclusive branch duct (BD) involvement is associated with a lower risk of carcinoma than main pancreatic duct (MPD) involvement. The aim of our study was to calculate longitudinal risk of malignant transformation of IPMT since the first sign. All the patients with a diagnosis of highly probable or histologically proven IPMT were included. Actuarial risks of occurrence of at least low-grade dysplasia (>or=LGD), high-grade dysplasia (>or=HGD), or invasive carcinoma (IC) were calculated by Kaplan-Meier method from the first sign attributable to IPMT. The risks according to sex, acute pancreatitis, tumor size, and involvement of MPD were compared by log-rank test. One hundred six patients were included with a proven (n = 76) or probable (n = 30) IPMT. The tumor was confined to BD in 53 cases. Median duration since the onset of the first sign to the end of follow-up was 21 months (range, 0-241). Ten-year actuarial risk that IPMT grade was >or=LGD, >or=HGD, or IC was 67%, 49%, and 29%, respectively. The only morphologic risk factor of malignant transformation was involvement of MPD, with a 5-year actuarial risk of >or=HGD of 63% in the MPD group compared with 15% in the BD group (P < .001). Longitudinal risk of at least HGD or IC is time-dependent. Patients with BD IPMT present a much lower risk, justifying a nonoperative surveillance.

  12. Daniel Augusto da Silva e o cálculo actuarial

    OpenAIRE

    Martins, Ana Patrícia Morais da Fonseca, 1978-

    2013-01-01

    Tese de doutoramento, História e Filosofia das Ciências, Universidade de Lisboa, Faculdade de Ciências, 2013 Daniel Augusto da Silva (1814-1878) é reconhecido como um dos mais importantes matemáticos portugueses do século XIX. O foco desta tese incide no seu contributo na área do Cálculo Actuarial, entre 1863 e 1871, especificamente, os seus estudos sobre a viabilidade de planos de pensões de montepios de sobrevivência. Numa época em que, em Portugal, os planos de pensões dessas sociedades...

  13. Sexual reconviction rates in the United Kingdom and actuarial risk estimates.

    Science.gov (United States)

    Craig, Leam A; Browne, Kevin D; Stringer, Ian; Hogue, Todd E

    2008-01-01

    Assessing the risk of further offending behavior by adult sexual perpetrators of children is highly relevant and important to professionals involved in child protection. Recent progress in assessing risk in sexual offenders has established the validity of actuarial measures, although there continues to be some debate about the application of these instruments. This paper summarizes the debate between clinical and actuarial approaches and reviews the "base rate" for United Kingdom sexual offense reconviction. A review of the literature revealed 16 UK sexual reconviction studies, 8 using incarcerated samples (N=5,915) and 8 using non-incarcerated samples (N=1,274). UK estimates of sexual reconviction rates are compared with European and North American studies. The mean sexual reconviction rates for the incarcerated sample at 2 years (6.0%), 4 years (7.8%) and 6 years or more (19.5%) were higher than that of the comparative non-incarcerated sample at 2 years (5.7%), up to 4 years (5.9%), and 6 years or more (15.5%). The overall sexual reconviction rate for both samples combined was 5.8% at 2 years, and 17.5% at 6 years or more. The sexual reconviction rate for incarcerated sexual offenders is higher than that of non-incarcerated sexual offenders. The UK sexual reconviction rates were comparable with European and North American studies.

  14. THE EVOLUTION AND FUTURE OF SOCIAL SECURITY IN AFRICA: AN ACTUARIAL PERSPECTIVE

    Directory of Open Access Journals (Sweden)

    Fatima Badat

    2015-09-01

    Full Text Available Social Security in most African countries has evolved significantly in terms of perspectives, motives, governance as well as innovation of benefits and administration. African countries are slowly, one by one, beginning to reassess the role of social security in correcting several social ills. Empowerment programs and grants are increasingly being provided via social security to women and the youth. From the roots of social security, even very low income countries, some of which have recently experienced several years of civil war and extreme economic hardships, have begun to improve benefit structures and amounts, which include national medical benefits. The attention being provided to social security and how it fits into a nation’s plans to lift itself out of poverty is increasingly involving the actuarial profession from international organisations such as ILO and ISSA as well as consulting actuaries and academics. Assessing and ensuring sustainability of social security benefits requires actuarial valuations to take long-term consequences involving demographic changes into account in the face of providing the benefits in the short term; asset liability modelling to ensure adequate resources are held; ensuring that results are appropriately reported and communicated to key stakeholders; as well as developing long-term strategic plans and dynamic systems surrounding all of these issues. In this paper, the role of actuaries is brought to the centre of the increasingly changing face and evolving culture of social security in taking Africa closer to poverty alleviation. La Seguridad Social en la mayoría de los países africanos ha evolucionado significativamente en cuanto a perspectivas, motivos, gobernanza, así como en innovación en las prestaciones y la adminsitración. Los países africanos están comenzando a reevaluar el papel de la Seguridad Social en la eliminación de determinados problemas sociales. Los programas de acción y los

  15. Youth Actuarial Risk Assessment Tool (Y-ARAT): The development of an actuarial risk assessment instrument for predicting general offense recidivism on the basis of police records.

    Science.gov (United States)

    van der Put, Claudia E

    2014-06-01

    Estimating the risk for recidivism is important for many areas of the criminal justice system. In the present study, the Youth Actuarial Risk Assessment Tool (Y-ARAT) was developed for juvenile offenders based solely on police records, with the aim to estimate the risk of general recidivism among large groups of juvenile offenders by police officers without clinical expertise. On the basis of the Y-ARAT, juvenile offenders are classified into five risk groups based on (combinations of) 10 variables including different types of incidents in which the juvenile was a suspect, total number of incidents in which the juvenile was a suspect, total number of other incidents, total number of incidents in which co-occupants at the youth's address were suspects, gender, and age at first incident. The Y-ARAT was developed on a sample of 2,501 juvenile offenders and validated on another sample of 2,499 juvenile offenders, showing moderate predictive accuracy (area under the receiver-operating-characteristic curve = .73), with little variation between the construction and validation sample. The predictive accuracy of the Y-ARAT was considered sufficient to justify its use as a screening instrument for the police. © The Author(s) 2013.

  16. 5 CFR 839.1114 - Will OPM actuarially reduce my benefit if I elect to change my retirement coverage under these...

    Science.gov (United States)

    2010-01-01

    ... 5 Administrative Personnel 2 2010-01-01 2010-01-01 false Will OPM actuarially reduce my benefit if I elect to change my retirement coverage under these rules? 839.1114 Section 839.1114 Administrative... General Provisions § 839.1114 Will OPM actuarially reduce my benefit if I elect to change my retirement...

  17. ANTEROCOD: actuarial survival curves applied to medical coding support for chronic diseases.

    Science.gov (United States)

    Lecornu, L; Le Guillou, C; Le Saux, F; Hubert, M; Puentes, J; Cauvin, J M

    2010-01-01

    For the practitioner, choosing diagnosis codes is a non-intuitive operation. Mistakes are frequent, causing severe consequences on healthcare performance evaluation and funding. French physicians have to assign a code to all their activities and are frequently prone to these errors. Given that most of the time and particularly for chronic diseases indexed information is already available, we propose a tool named AnterOcod, in order to support the medical coding task. It suggests the list of most relevant plausible codes, predicted from the patient's earlier hospital stays, according to a set of previously utilized diagnosis codes. Our method applies the estimation of code reappearance rates, based on an equivalent approach to actuarial survival curves. Around 33% of the expected correct diagnosis codes were retrieved in this manner, after evaluating 998 discharge abstracts, significantly improving the coding task.

  18. Reproductive effort accelerates actuarial senescence in wild birds: an experimental study.

    Science.gov (United States)

    Boonekamp, Jelle J; Salomons, Martijn; Bouwhuis, Sandra; Dijkstra, Cor; Verhulst, Simon

    2014-05-01

    Optimality theories of ageing predict that the balance between reproductive effort and somatic maintenance determines the rate of ageing. Laboratory studies find that increased reproductive effort shortens lifespan, but through increased short-term mortality rather than ageing. In contrast, high fecundity in early life is associated with accelerated senescence in free-living vertebrates, but these studies are non-experimental. We performed lifelong brood size manipulation in free-living jackdaws. Actuarial senescence--the increase in mortality rate with age--was threefold higher in birds rearing enlarged- compared to reduced broods, confirming a key prediction of the optimality theory of ageing. Our findings contrast with the results of single-year brood size manipulation studies carried out in many species, in which there was no overall discernible manipulation effect on mortality. We suggest that our and previous findings are in agreement with predictions based on the reliability theory of ageing and propose further tests of this proposition.

  19. Actuarial Neutrality across Generations Applied to Public Pensions under Population Ageing: Effects on Government Finances and National Saving

    OpenAIRE

    Heikki Oksanen

    2005-01-01

    In welfare states, collective saving has declined to a persistently negative level, while reduced fertility and increasing longevity are leading to increasing pension liabilities. Actuarial neutrality across generations is presented as a benchmark for designing pension reforms to meet the challenges of population ageing. It is shown that this condition can be respected by a wide range of pension reforms, with very different consequences for public finance target setting. The rules for public ...

  20. The ethical implications of Paul Meehl's work on comparing clinical versus actuarial prediction methods.

    Science.gov (United States)

    Dawes, Robyn M

    2005-10-01

    Paul E. Meehl's work comparing statistical versus actuarial prediction-and the large body of research that followed by others on the same topic-was mainly theoretical and empirical. Meehl also suggested that this work led to a "practical" conclusion, which was quite strong. The author argues that, in addition, it leads to an ethical conclusion, equally strong. Whether the scientific findings are combined with an overarching ethical principle that the best predictions possible should be made for clients, or whether these findings are framed as delineating what can be done for clients-and that clinicians ought not to attempt to do what they cannot-the conclusion is the same. Whenever statistical prediction rules (SPR's) are available for making a relevant prediction, they should be used in preference to intuition. Any modification of these rules should be systematic and subject to the same type of evaluation originally used to assess the SPR's themselves. It is even possible to develop near-optimal rules in new situations. Providing service that assumes that clinicians "can do better" simply based on self-confidence or plausibility in the absence of evidence that they can actually do so is simply unethical. 2005 Wiley Periodicals, Inc.

  1. A theoretical model of the evolution of actuarial senescence under environmental stress.

    Science.gov (United States)

    Watson, H; Cohen, A A; Isaksson, C

    2015-11-01

    Free-living organisms are exposed to a wide range of stressors, all of which can disrupt components of stress-related and detoxification physiology. The subsequent accumulation of somatic damage is widely believed to play a major role in the evolution of senescence. Organisms have evolved sophisticated physiological regulatory mechanisms to maintain homeostasis in response to environmental perturbations, but these systems are likely to be constrained in their ability to optimise robustness to multiple stressors due to functional correlations among related traits. While evolutionary change can accelerate due to human ecological impacts, it remains to be understood how exposure to multiple environmental stressors could affect senescence rates and subsequently population dynamics and fitness. We used a theoretical evolutionary framework to quantify the potential consequences for the evolution of actuarial senescence in response to exposure to simultaneous physiological stressors--one versus multiple and additive versus synergistic--in a hypothetical population of avian "urban adapters". In a model in which multiple stressors have additive effects on physiology, species may retain greater capacity to recover, or respond adaptively, to environmental challenges. However, in the presence of high synergy, physiological dysregulation suddenly occurs, leading to a rapid increase in age-dependent mortality and subsequent population collapse. Our results suggest that, if the synergistic model is correct, population crashes in environmentally-stressed species could happen quickly and with little warning, as physiological thresholds of stress resistance are overcome. Copyright © 2015 The Authors. Published by Elsevier Inc. All rights reserved.

  2. What you should want from your professional:The impact of educational information on people’s attitudes toward simple actuarial tools

    OpenAIRE

    Eastwood, Joseph; Luther, Kirk

    2016-01-01

    The ability to increase positive attitudes toward the usage of simple actuarial tools by presenting educational information regarding the benefits of such tools (i.e., accurate and efficient) was assessed. Using a 2 (accuracy information vs. no accuracy information) × 2 (efficiency information vs. no efficiency information) between-participants design, participants were presented with details of a simple actuarial decision-making tool in either a medical scenario (Study 1; N = 404) or a legal...

  3. Capital offenders in Texas prisons: rates, correlates, and an actuarial analysis of violent misconduct.

    Science.gov (United States)

    Cunningham, Mark Douglas; Sorensen, Jon R

    2007-12-01

    This study analyzed the records of 136 recently incarcerated capital murder offenders in the initial phase (M = 2.37 years, range = 6-40 months) of their life sentences in the Texas Department of Criminal Justice. Prevalence rates of institutional violence were inversely related to severity: potentially violent misconduct (36.8%), assaultive violations (14%), serious assaults (5.1%), and homicides (0%). Consistent with prior studies, factors correlated with assaultive misconduct included age (inversely), prior prison confinement, and concurrent robbery or burglary in the capital offense. A simplified Burgess scale entitled the Risk Assessment Scale for Prison-Capital (RASP-Cap) was moderately successful in identifying varying levels of improbability of committing violence-related misconduct however defined (AUC = .715-.766).

  4. Accepted legal applications of actuarial testing and delinquency interventions: examples of savings in real-life situations.

    Science.gov (United States)

    Zagar, Robert John; Zagar, Agata Karolina; Bartikowski, Boris; Busch, Kenneth G; Stark, Randall

    2009-02-01

    Violent crime, especially by youth, is an increasing and costly problem. Zagar and colleagues have described five empirical studies in which youths' and adults' risks were identified and used to predict commission of homicide. The samples were more representative of the most violent modern urban delinquents than samples in previous research from smaller cities. From Zagar and colleagues' results, it is clear that the use of actuarial personality and probation-parole tests to identify at-risk individuals and target treatments to their needs would allow organizations to reduce loss of life and improve quality of life and economic and social well-being. The current article first provides a brief review of the situations in which the courts already accept the use of actuarial personality and probation-parole tests. Following that are several representations of the costs and benefits of broader application of testing and treatment in schools, universities, and workplaces. Finally, a specific proposal for generalized screening is proposed in a city of 3 million, with estimates of lives saved and costs reduced.

  5. Substance Abuse among High-Risk Sexual Offenders: Do Measures of Lifetime History of Substance Abuse Add to the Prediction of Recidivism over Actuarial Risk Assessment Instruments?

    Science.gov (United States)

    Looman, Jan; Abracen, Jeffrey

    2011-01-01

    There has been relatively little research on the degree to which measures of lifetime history of substance abuse add to the prediction of risk based on actuarial measures alone among sexual offenders. This issue is of relevance in that a history of substance abuse is related to relapse to substance using behavior. Furthermore, substance use has…

  6. Recursos tecnológicos y actividades no presenciales para un mejor aprendizaje de la Estadística Actuarial

    Directory of Open Access Journals (Sweden)

    Antonio Fernández Morales

    2010-12-01

    Full Text Available En este artículo se describe el diseño y los resultados obtenidos con una estrategia didáctica innovadora para el aprendizaje de la Estadística Actuarial en la licenciatura de Ciencias Actuariales y Financieras de la Universidad de Málaga. Mediante un uso intensivo de actividades no presenciales y elementos tecnológicos que favorecen el aprendizaje en movilidad se pretende potenciar el aprendizaje autónomo, colaborativo y contextualizado. Para ello se han diseñado, entre otras, actividades de identificación y asimilación de competencias, un laboratorio virtual de supervivencia basado en un simulador gráfico interactivo y un microportal para dispositivos iPhone y iPod touch de Apple.

  7. Calculo y comparacion de la prima de un reaseguro de salud usando el modelo de opciones de Black-Scholes y el modelo actuarial

    Directory of Open Access Journals (Sweden)

    Luis Eduardo Giron

    2015-12-01

    Full Text Available La presente investigación pretende calcular y comparar la prima de un reaseguro  usando el modelo de opciones de Black-Scholes y el modelo clásico actuarial tradicional. El período de análisis va desde enero de 2011 hasta diciembre de 2012. Los resultados obtenidos muestran que el modelo de Black-Scholes, que se utiliza normalmente para valorar opciones financieras, puede ser también usado para la estimación de primas de reaseguros de salud; y que la prima neta estimada a partir de este modelo se aproxima a las establecidas por el método actuarial, excepto cuando el deducible del reaseguro es muy alto (por encima de $200.000.000.

  8. A difusão da técnica actuarial e as primeiras companhias de seguros no Porto (século XIX)

    OpenAIRE

    Alves, Jorge Fernandes

    2014-01-01

    This study aims to question the assurances companies establishment in Porto in the liberal period in the context of the actuarial techniques development and its generalization in the maritime, fire and life branches of assurance. After giving a general outline of the assurance practices in Porto, we proceed to recapitulate some aspects of Segurança, Garantia and Previdente companies, seen as case studies.

  9. Induced seismicity closed-form traffic light system for actuarial decision-making during deep fluid injections.

    Science.gov (United States)

    Mignan, A; Broccardo, M; Wiemer, S; Giardini, D

    2017-10-19

    The rise in the frequency of anthropogenic earthquakes due to deep fluid injections is posing serious economic, societal, and legal challenges to many geo-energy and waste-disposal projects. Existing tools to assess such problems are still inherently heuristic and mostly based on expert elicitation (so-called clinical judgment). We propose, as a complementary approach, an adaptive traffic light system (ATLS) that is function of a statistical model of induced seismicity. It offers an actuarial judgement of the risk, which is based on a mapping between earthquake magnitude and risk. Using data from six underground reservoir stimulation experiments, mostly from Enhanced Geothermal Systems, we illustrate how such a data-driven adaptive forecasting system could guarantee a risk-based safety target. The proposed model, which includes a linear relationship between seismicity rate and flow rate, as well as a normal diffusion process for post-injection, is first confirmed to be representative of the data. Being integrable, the model yields a closed-form ATLS solution that is both transparent and robust. Although simulations verify that the safety target is consistently ensured when the ATLS is applied, the model from which simulations are generated is validated on a limited dataset, hence still requiring further tests in additional fluid injection environments.

  10. Risk allocation in a public-private catastrophe insurance system : an actuarial analysis of deductibles, stop-loss, and premiums

    NARCIS (Netherlands)

    Paudel, Y.; Botzen, W. J. W.; Aerts, J. C. J. H.; Dijkstra, T. K.

    A public-private (PP) partnership could be a viable arrangement for providing insurance coverage for catastrophe events, such as floods and earthquakes. The objective of this paper is to obtain insights into efficient and practical allocations of risk in a PP insurance system. In particular, this

  11. Risk allocation in a public-private catastrophe insurance system : An actuarial analysis of deductibles, stop-loss, and premiums

    NARCIS (Netherlands)

    Paudel, Y.; Botzen, W.J.W.; Dijkstra, Th.; Aerts, J.C.J.H.

    2015-01-01

    A public-private (PP) partnership could be a viable arrangement for providing insurance coverage for catastrophe events, such as floods and earthquakes. The objective of this paper is to obtain insights into efficient and practical allocations of risk in a PP insurance system. In particular, this

  12. Resultados económicos de la gestión de los planes y fondos de pensiones: La ganancia actuarial

    Directory of Open Access Journals (Sweden)

    García González, A.

    1998-01-01

    Full Text Available Uno de los objetivos que persigue el gestor de un plan de pensiones de prestación definida como el analizado en este artículo, al utilizar los métodos de valoración actuarial para la determinación del coste anual del mismo, es comprobar que los recursos financieros del fondo en cada momento de su valoración sean los adecuados para hacer frente al pago de los compromisos que respecto a los beneficiarios tiene asumido el plan. Sin embargo, este fondo no siempre es capaz de garantizar estos compromisos y ello está motivado, entre otras causas, por las desviaciones que se dan entre la realidad y las hipótesis actuariales establecidas en el momento de su implantación. Estas desviaciones repercutirán positiva o negativamente en el nivel del fondo, dando lugar a la denominada ganancia actuarial del plan, que es una medida de la gestión económico-financiera del mismo. Por tanto, el objetivo de este trabajo es analizar estas desviaciones utilizando para ello la metodología de la Dinámica de Sistemas. Con el fin de describir cada uno de los componentes que integran la ganancia actuarial y de comprobar la repercusión que tienen sobre el nivel del fondo del plan en cada momento, se realizará una simulación de estas desviaciones a través de un programa adecuado con el fin de obtener una serie de resultados por medio de los cuales se puedan controlar aquéllas y, en consecuencia, reducir en la medida de lo posible el nivel deficitario del fondo del plan.

  13. Tablas de vida para cálculo actuarial de rentas vitalicias y retiro programado. Costa Rica circa 2000

    Directory of Open Access Journals (Sweden)

    Rosero-Bixby, Luis

    2004-01-01

    Full Text Available Se presentan las tablas completas de mortalidad de Costa Rica del periodo 1995-2000 y se describe el procedimiento seguido en su estimación. Este procedimiento incluye una evaluación detallada de la información básica, especialmente de los errores censales de declaración de la edad entre los adultos mayores. Predominan los errores de exageración de la edad, los cuales inflan la población de edades avanzadas, especialmente de los 80 años en adelante. Por ejemplo, la población de 95 años y más de edad del censo está inflada en 22%. Las tablas de vida incluyen una extrapolación de la mortalidad para edades mayores de 100 años. Con una muestra de alrededor de 7 mil adultos mayores se determina que el patrón de mortalidad de los derecho-habientes de pensión es menor que el de la población general. La esperanza de vida al nacer de hombres y mujeres resultó de 74,6 y 79,4 años, respectivamente y a la edad 60 fue de 20,6 y 23,2 años, respectivamente, en toda la población de Costa Rica, y de 22,0 y 25,3 años entre los derecho-habientes de pensión. Para tomar en cuenta la disminución de la mortalidad que probablemente ocurrirá en el futuro en Costa Rica se recomienda usar la tabla de vida proyectada para 2020-25. Se seleccionó este periodo porque la esperanza de vida a la edad 65 es muy parecida a la estimada para la cohorte de nacidos en 1940, la cual se considera representativa de quienes se pensionarán en el corto y mediano plazo. Se presenta la tabla completa de 2020-25, corregida por la menor mortalidad de los derecho-habientes, para que sea utilizada en el cálculo actuarial de pensiones vitalicias y retiro programado en el periodo 2000-5. La esperanza de vida a la edad 60 en esta tabla resultó de 23,6 para los hombres y 26,8 para las mujeres, es decir, unos tres años más altas que las estimadas para la población de Costa Rica 1995-2000. Se recomienda actualizar estas estimaciones cada 5 años.

  14. The European Insurance Industry: A PEST Analysis

    Directory of Open Access Journals (Sweden)

    Charmaine Barbara

    2017-05-01

    Full Text Available The insurance industry plays an important role for European economic stability and the threats and opportunities it faces should be carefully determined. In this paper we highlight the main challenges by using a Political, Economic, Social and Technological (PEST analysis. This work applies conventional actuarial thought on this area by focusing strictly on the European sector.

  15. Empirical analysis of retirement pension and IFRS adoption effects on accounting information: glance at IT industry.

    Science.gov (United States)

    Kim, JeongYeon

    2014-01-01

    This study reviews new pension accounting with K-IFRS and provides empirical changes in liability for retirement allowances with adoption of K-IFRS. It will help to understand the effect of pension accounting on individual firm's financial report and the importance of public announcement of actuarial assumptions. Firms that adopted K-IFRS had various changes in retirement liability compared to the previous financial report not based on K-IFRS. Their actuarial assumptions for pension accounting should be announced, but only few of them were published. Data analysis shows that the small differences of the actuarial assumption may result in a big change of retirement related liability. Firms within IT industry also have similar behaviors, which means that additional financial regulations for pension accounting are recommended.

  16. Empirical Analysis of Retirement Pension and IFRS Adoption Effects on Accounting Information: Glance at IT Industry

    Directory of Open Access Journals (Sweden)

    JeongYeon Kim

    2014-01-01

    Full Text Available This study reviews new pension accounting with K-IFRS and provides empirical changes in liability for retirement allowances with adoption of K-IFRS. It will help to understand the effect of pension accounting on individual firm’s financial report and the importance of public announcement of actuarial assumptions. Firms that adopted K-IFRS had various changes in retirement liability compared to the previous financial report not based on K-IFRS. Their actuarial assumptions for pension accounting should be announced, but only few of them were published. Data analysis shows that the small differences of the actuarial assumption may result in a big change of retirement related liability. Firms within IT industry also have similar behaviors, which means that additional financial regulations for pension accounting are recommended.

  17. Propuesta de formulación financiero-actuarial de un seguro de dependencia y acercamiento a una aplicación práctica

    Directory of Open Access Journals (Sweden)

    Mª Manuela Segovia

    2005-01-01

    Full Text Available En los países industrializados, convergen dos fenómenos demográficos, la longevidad y la escasa natalidad, que provocan un envejecimiento de la población y con ello una serie de procesos sociales que son necesarios atender. Uno de ellos, es la cobertura de la dependencia de las personas mayores, entendiendo por dependencia, la necesidad de ayuda para realizar las tareas básicas de la vida diaria. España se encuentra en la actualidad en plena discusión parlamentaria para regular mediante ley la dependencia y cubrir el avance de este problema que en los próximos años se verá agravado por nuestra evolución demográfica y social. Esta ley pretende establecer las bases para su atención mediante un seguro de dependencia, bien de cobertura pública por parte del Estado o bien por aseguradoras privadas. El trabajo presentado en este congreso forma parte de un estudio amplio sobre la dependencia en España y abordará una aproximación a la formulación actuarial de un seguro de dependencia partiendo del uso de cadenas de Markov para un modelo de múltiples estados, y un acercamiento a la aplicación práctica mediante el análisis de datos sobre discapacidad de nuestro país.

  18. CIMPA-UNESCO-MESR-MINECO-MOROCCO research school entitled Statistical Methods and Applications in Finance and Actuarial Science

    CERN Document Server

    Essaky, El; Vives, Josep

    2016-01-01

    This book is the outcome of the CIMPA School on Statistical Methods and Applications in Insurance and Finance, held in Marrakech and Kelaat M'gouna (Morocco) in April 2013. It presents two lectures and seven refereed papers from the school, offering the reader important insights into key topics. The first of the lectures, by Frederic Viens, addresses risk management via hedging in discrete and continuous time, while the second, by Boualem Djehiche, reviews statistical estimation methods applied to life and disability insurance. The refereed papers offer diverse perspectives and extensive discussions on subjects including optimal control, financial modeling using stochastic differential equations, pricing and hedging of financial derivatives, and sensitivity analysis. Each chapter of the volume includes a comprehensive bibliography to promote further research.

  19. The Accuracy of Recidivism Risk Assessments for Sexual Offenders: A Meta-Analysis of 118 Prediction Studies

    Science.gov (United States)

    Hanson, R. Karl; Morton-Bourgon, Kelly E.

    2009-01-01

    This review compared the accuracy of various approaches to the prediction of recidivism among sexual offenders. On the basis of a meta-analysis of 536 findings drawn from 118 distinct samples (45,398 sexual offenders, 16 countries), empirically derived actuarial measures were more accurate than unstructured professional judgment for all outcomes…

  20. South African Actuarial Journal: Submissions

    African Journals Online (AJOL)

    Where possible, published works should be cited in preference to unpublished works. A statute should be referred to as, e.g., 'the Pension Funds Act, 1956, 3 with a footnote giving its full name and number and except in the case of the Parliament of South Africa, the legislature. 3.6.5 In the text, except where the citation itself ...

  1. Life insurance theory actuarial perspectives

    CERN Document Server

    Vylder, F Etienne

    1997-01-01

    This book is different from all other books on Life Insurance by at least one of the following characteristics 1-4. 1. The treatment of life insurances at three different levels: time-capital, present value and price level. We call time-capital any distribution of a capital over time: (*) is the time-capital with amounts Cl, ~, ... , C at moments Tl, T , ..• , T resp. N 2 N For instance, let (x) be a life at instant 0 with future lifetime X. Then the whole oO oO life insurance A is the time-capital (I,X). The whole life annuity ä is the x x time-capital (1,0) + (1,1) + (1,2) + ... + (I,'X), where 'X is the integer part ofX. The present value at 0 of time-capital (*) is the random variable T1 T TN Cl V + ~ v , + ... + CNV . (**) In particular, the present value ofA 00 and ä 00 is x x 0 0 2 A = ~ and ä = 1 + v + v + ... + v'X resp. x x The price (or premium) of a time-capital is the expectation of its present value. In particular, the price ofA 00 and äx 00 is x 2 A = E(~) and ä = E(I + v + v + ... + v'X...

  2. Tutorial: survival analysis--a statistic for clinical, efficacy, and theoretical applications.

    Science.gov (United States)

    Gruber, F A

    1999-04-01

    Current demands for increased research attention to therapeutic efficacy, efficiency, and also for improved developmental models call for analysis of longitudinal outcome data. Statistical treatment of longitudinal speech and language data is difficult, but there is a family of statistical techniques in common use in medicine, actuarial science, manufacturing, and sociology that has not been used in speech or language research. Survival analysis is introduced as a method that avoids many of the statistical problems of other techniques because it treats time as the outcome. In survival analysis, probabilities are calculated not just for groups but also for individuals in a group. This is a major advantage for clinical work. This paper provides a basic introduction to nonparametric and semiparametric survival analysis using speech outcomes as examples. A brief discussion of potential conflicts between actuarial analysis and clinical intuition is also provided.

  3. Clinical analysis of novalis stereotactic radiosurgery for brain metastases.

    Science.gov (United States)

    Gu, Hae-Won; Sohn, Moon-Jun; Lee, Dong-Joon; Lee, Hye Ran; Lee, Chae-Heuck; Whang, C Jin

    2009-09-01

    The authors analyzed the effectiveness and therapeutic response of Novalis shaped beam radiosurgery for metastatic brain tumors, and the prognostic factors which influenced the outcome. We performed a retrospective analysis of 106 patients who underwent 159 treatments for 640 metastatic brain lesions between January 2000 and April 2008. The pathologies of the primary tumor were mainly lung (45.3%), breast (18.2%) and GI tract (13.2%). We classified the patients using Radiation Therapy Oncology Group Recursive Partitioning Analysis (RPA) and then analyzed the survival and prognostic factors according to the Kaplan Meier method and univariate analysis. The overall median actuarial survival rate was 7.3 months from the time of first radiosurgery treatment while 1 and 2 year actuarial survival estimates were 31% and 14.4%, respectively. Median actuarial survival rates for RPA classes I, II, and III were 31.3 months, 7.5 months and 1.7 months, respectively. Patients' life spans, higher Karnofsky performance scores and age correlated closely with RPA classes. However, sex and the number of lesions were not found to be significantly associated with length of survival. This result suggests that Novalis radiosurgery can be a good treatment option for treatment of the patients with brain metastases.

  4. ANÁLISIS Y CONTEXTUALIZACIÓN DE LOS ASPECTOS DE ÍNDOLE ACTUARIAL Y DE SEGURIDAD SOCIAL DE LA LEY 35/2015 DE REFORMA DEL SISTEMA PARA LA VALORACIÓN DE LOS DAÑOS Y PERJUICIOS CAUSADOS A LAS PERSONAS EN ACCIDENTES DE CIRCULACIÓN

    Directory of Open Access Journals (Sweden)

    Luis María Sáez de Jáuregui Sanz

    2016-06-01

    Full Text Available En este trabajo se analizan y se contextualizan los aspectos de índole actuarial y de seguridad social recogidos en la Ley 35/2015 de reforma del sistema para la valoración de los daños y perjuicios causados a las personas en accidentes de circulación. Los preliminares de la Ley 35/2015 comienzan en 2011 con la creación de una Comisión de Expertos. A partir de ahí, se inicia un proceso que culmina, en primer lugar, en 2014 en Junta Consultiva de Seguros y Fondos de Pensiones con la entrega de un Texto articulado, unas Tablas de indemnización y unas Bases técnicas actuariales que configuran un nuevo y novedoso sistema de valoración y que termina de finalizar –tras su trámite parlamentario con prácticamente nulas modificaciones en lo fundamental– con la entrada en vigor el 1 de enero de 2016 de la Ley 35/2015, recogiéndose por primera vez en el ordenamiento jurídico español un modelo actuarial para indemnizar el lucro cesante y el daño emergente. This paper analyzes and contextualizes the actuarial and social security features of the brand new Law 35/2015 of reform for assessing the damage caused to people in road accidents. Preliminaries of the Law 35/2015 began in 2011 with the creation of a Committee of Experts. From there, a process, culminated first in 2014, in the Advisory Board of Insurance and Pension Funds with the delivery of an articulated text, tables compensation and the actuarial technical bases that form a new and novel assessment system, and ended -after the end of its parliamentary process with virtually no changes in fundamentally- with the entry into force, on January 1st of 2016, of the Law 35/2015, introducing for the first time in the Spanish legal system an actuarial model to compensate people for loss of profits and its consequential damages.

  5. EL COMPLEMENTO POR MATERNIDAD DE LAS PENSIONES DE LA SEGURIDAD SOCIAL EN ESPAÑA: ANÁLISIS FINANCIERO ACTUARIAL BASADO EN LA MCVL

    Directory of Open Access Journals (Sweden)

    José Enrique Devesa Carpio

    2017-06-01

    gender gap in our country. Hereafter, the characteristics of the Maternity Supplement in Spain and in other countries in which a similar complement has been applied are summarized. The analysis of the methodology used is developed in the following section, stopping in the revision of the Internal Rate of Return, the Replacement Rate, the Gender Gap and the Expenditure associated to the complement. In order to apply this methodology, data have been obtained from the Continuous Sample of Working Lives of 2014. The effect of the complement is cumulative so it is projected into the future, until the system stabilizes the expense generated by the complement, which could be an increase of 2.5% for retirement, surpassing in current euros of 2014, 2,000 million. There is an increase of almost 6% in the average amount of the initial pension of women, decreasing the gender gap in more than 4 points. It is analyzed for the Regimen General and Self-employed and a sensitivity analysis is carried out according to: the variation of the total increase in pension expenditure; the fertility; and the participation of women in the labor market.

  6. South African Actuarial Journal - Vol 17 (2017)

    African Journals Online (AJOL)

    Estimating option-implied distributions in illiquid markets and implementing the Ross recovery theorem · EMAIL FULL TEXT EMAIL FULL TEXT DOWNLOAD FULL TEXT DOWNLOAD FULL TEXT. Emlyn Flint, Eben Maré, 1-28 ...

  7. South African Actuarial Journal - Vol 11 (2011)

    African Journals Online (AJOL)

    The arbitrage-free equilibrium pricing of liabilities in an incomplete market: application to a South African retirement fund · EMAIL FULL TEXT EMAIL FULL TEXT · DOWNLOAD FULL TEXT DOWNLOAD FULL TEXT. RJ Thomson, 1-41. http://dx.doi.org/10.4314/saaj.v11i1.1 ...

  8. Actuarial Implications from Pre-Kindergarten Education

    Science.gov (United States)

    Beekman, John; Ober, David

    2016-01-01

    Great progress has been made in providing pre-kindergarten (pre-K) public education throughout the United States. The percentages of 3- and 4-year-olds enrolled nationally have grown from 3% to 5% and 14% to 29%, respectively, between 2002 and 2015. By 2015, 42 states and the District of Columbia were in varying stages of offering pre-K programs…

  9. Small dependencies and large actuarial risks

    NARCIS (Netherlands)

    Albers, Willem/Wim; Kallenberg, W.C.M.; Lukocius, V.

    Methods for computing risk measures such as stop-loss premiums tacitly assume independence of the underlying individual risks. From earlier studies it is already known that this assumption can lead to huge errors even when only small dependencies occur. In the present paper a general model is

  10. Actuarial risk measures for financial derivative pricing

    NARCIS (Netherlands)

    Goovaerts, M.J.; Laeven, R.J.A.

    2008-01-01

    We present an axiomatic characterization of price measures that are superadditive and comonotonic additive for normally distributed random variables. The price representation derived involves a probability measure transform that is closely related to the Esscher transform, and we call it the

  11. Restricted Coherent Risk Measures and Actuarial Solvency

    Directory of Open Access Journals (Sweden)

    Christos E. Kountzakis

    2012-01-01

    Full Text Available We prove a general dual representation form for restricted coherent risk measures, and we apply it to a minimization problem of the required solvency capital for an insurance company.

  12. Idade de aparecimento e desaparecimento das pontas rolândicas em 160 crianças acompanhadas ambulatorialmente: estudo atuarial Age of appearance and disappearance of rolandic spikes of 160 children: an actuarial study

    Directory of Open Access Journals (Sweden)

    MOACIR A. BORGES

    1999-09-01

    Full Text Available PROPOSTA: Determinar a idade em que surgem e desaparecem as pontas rolândicas (PR em traçados eletrencefalográficos de rotina. MÉTODO: Estudo prospectivo hospitalar, baseado em 412 eletrencefalogramas de 160 crianças que frequentaram o ambulatório de neuropediatria entre as idades de 1 e 16 anos, no período de março de 1989, a março de 1998. Usou-se o sistema 10/20 para colocação dos eletrodos. As crianças foram dividas, por idade, em quatro grupos (1 a 4; 5 a 8; 9 a 16; 1 a 16 e usou-se o método de curva atuarial, considerando-se como evento, o desaparecimento da PR. RESULTADOS: PR teve distribuição entre meninos e meninas na razão de 64/36. A idade média em que surgiu a PR foi 7 anos (7,2 para homens e 6,6 para mulheres e, num pequeno grupo de crianças que tinha EEG normal anterior ao surgimento da PR, a idade média foi 6,8 anos. Após 7 anos de seguimento, a percentagem de pacientes livres de PRs era 60% para o grupo de 1 a 4 anos na admissão, 84% para os grupos de 5 a 8 anos e 9 a 16 anos. Para o grupo total (1 a 16 anos a percentagem de livres de PR, após 7 anos de seguimento, foi 78%. CONCLUSÃO: O estudo mostra que as PR surgiram, em média, aos 7 anos e têm probabilidade de desaparecimento até 7 anos de seguimento, independetemente da faixa etária de aparecimento.This study aims to determine the age at which the rolandic spikes (RS appear and disappear in routine EEGs. METHOD: It has been carried out a hospital based prospective study of 412 EEGs records of 160 children who had been assisted at the neuropediatric out-patient department during the period between March, 1989 and March,1998. Recordings were made on 8-channel instruments and 10/20 system has been to place the electrodes. The children have been divided into 4 groups, according to their age (1 to 4; 5 to 8; 9 to 16; 1 to 16, and the actuarial curve method has been used to show the disappearance of the rolandic spikes. RESULTS: RS distribution between

  13. Revascularization among patients with severe left ventricular dysfunction: a meta-analysis of observational studies.

    Science.gov (United States)

    Kunadian, Vijayalakshmi; Zaman, Azfar; Qiu, Weiliang

    2011-07-01

    Coronary artery bypass graft (CABG) surgery is the standard of care for the management of patients with severe three-vessel and left main coronary artery disease (CAD). However, the optimal strategy for management of patients with CAD and severe left ventricular (LV) dysfunction [ejection fraction (EF) ≤35%] is not clear. A meta-analysis of observational studies was performed to determine the operative mortality and long-term (5-year actuarial survival) outcomes among patients with severe LV dysfunction undergoing CABG. A systematic computerized literature search was performed and observational studies consisting of patients undergoing isolated CABG for CAD and severe LV dysfunction were included. Studies that did not report operative mortality, long-term (≥1 year) survival data, or pre-operative EF and multiple studies from the same group were excluded. In total, 4119 patients from 26 observational clinical studies were included. The estimated mean age was 63.9 years and 82.4% of patients were men. The mean (estimate) pre-operative EF was 24.7% (95% CI 22.5-27.0%). The operative mortality among patients (26 studies, n= 3621) who underwent on-pump CABG was 5.4%, n= 189 (95% CI 4.5-6.4%). The 5-year actuarial survival among patients (13 studies, n= 1980) who underwent on-pump CABG was 73.4%, n= 1483 (95% CI 68.7-77.7%). Patients who underwent off-pump CABG (7 studies, n= 498) tended to have reduced operative mortality of 4.4%, n= 20 (95% CI 2.8-6.4%). The mean (estimate) post-operative EF was 35.19% (95% CI 31.95-38.43%). The present meta-analysis demonstrates that based on data from available observational clinical studies, CABG can be performed with acceptable operative mortality and 5-year actuarial survival in patients with severe LV dysfunction.

  14. A meta-analysis of single HCV-untreated arm of studies evaluating outcomes after curative treatments of HCV-related hepatocellular carcinoma.

    Science.gov (United States)

    Cabibbo, Giuseppe; Petta, Salvatore; Barbàra, Marco; Missale, Gabriele; Virdone, Roberto; Caturelli, Eugenio; Piscaglia, Fabio; Morisco, Filomena; Colecchia, Antonio; Farinati, Fabio; Giannini, Edoardo; Trevisani, Franco; Craxì, Antonio; Colombo, Massimo; Cammà, Calogero

    2017-08-01

    Determining risk for recurrence or survival after curative resection or ablation in patients with hepatitis C virus (HCV)-related hepatocellular carcinoma (HCC) is important for stratifying patients according to expected outcomes in future studies of adjuvant therapy in the era of direct-acting antivirals (DAAs). The aims of this meta-analysis were to estimate the recurrence and survival probabilities of HCV-related early HCC following complete response after potentially curative treatment and to identify predictors of recurrence and survival. Studies reporting time-dependent outcomes (HCC recurrence or death) after potentially curative treatment of HCV-related early HCC were identified in MEDLINE through May 2016. Data on patient populations and outcomes were extracted from each study by three independent observers and combined using a distribution-free summary survival curve. Primary outcomes were actuarial probabilities of recurrence and survival. Eleven studies met the inclusion criteria. Pooled estimates of actuarial recurrence rates were 7.4% at 6 months and 47.0% at 2 years. Pooled estimates of actuarial survival rates were 79.8% at 3 years and 58.6% at 5 years. Heterogeneity among studies was highly significant for all outcomes. By univariate meta-regression analyses, lower serum albumin, randomized controlled trial study design and follow-up were independently associated with higher recurrence risk, whereas tumour size and alpha-foetoprotein levels were associated with higher mortality. This meta-analysis showed that recurrence risk and survival are extremely variable in patients with successfully treated HCV-related HCC, providing a useful benchmark for indirect comparisons of the benefits of DAAs and for a correct design of randomized controlled trials in the adjuvant setting. © 2017 John Wiley & Sons A/S. Published by John Wiley & Sons Ltd.

  15. Multidimensional credibility: a Bayesian analysis of policyholders holding multiple policies

    NARCIS (Netherlands)

    Antonio, K.; Guillén, M.; Pérez Martín, A.M.

    2010-01-01

    Property and casualty actuaries are professional experts in the economic assessment of uncertain events related to non-life insurance products (eg fire, liability or motor insurance). For the construction of a fair and reasonable tariff associated with the risks in their portfolio, actuaries have

  16. Multidimensional credibility: a Bayesian analysis of policyholders holding multiple contracts

    NARCIS (Netherlands)

    Antonio, K.; Guillén, M.; Pérez Marín, A.M.

    2011-01-01

    Property and casualty actuaries are professional experts in the economic assessment of uncertain events related to non-life insurance products (e.g. fire, liability or motor insurance). For the construction of a fair and reasonable tariff associated with the risks in their portfolio, actuaries have

  17. Predicting child maltreatment: A meta-analysis of the predictive validity of risk assessment instruments.

    Science.gov (United States)

    van der Put, Claudia E; Assink, Mark; Boekhout van Solinge, Noëlle F

    2017-11-01

    Risk assessment is crucial in preventing child maltreatment since it can identify high-risk cases in need of child protection intervention. Despite widespread use of risk assessment instruments in child welfare, it is unknown how well these instruments predict maltreatment and what instrument characteristics are associated with higher levels of predictive validity. Therefore, a multilevel meta-analysis was conducted to examine the predictive accuracy of (characteristics of) risk assessment instruments. A literature search yielded 30 independent studies (N=87,329) examining the predictive validity of 27 different risk assessment instruments. From these studies, 67 effect sizes could be extracted. Overall, a medium significant effect was found (AUC=0.681), indicating a moderate predictive accuracy. Moderator analyses revealed that onset of maltreatment can be better predicted than recurrence of maltreatment, which is a promising finding for early detection and prevention of child maltreatment. In addition, actuarial instruments were found to outperform clinical instruments. To bring risk and needs assessment in child welfare to a higher level, actuarial instruments should be further developed and strengthened by distinguishing risk assessment from needs assessment and by integrating risk assessment with case management. Copyright © 2017 Elsevier Ltd. All rights reserved.

  18. Introduction to modeling and analysis of stochastic systems

    CERN Document Server

    Kulkarni, V G

    2011-01-01

    This is an introductory-level text on stochastic modeling. It is suited for undergraduate students in engineering, operations research, statistics, mathematics, actuarial science, business management, computer science, and public policy. It employs a large number of examples to teach the students to use stochastic models of real-life systems to predict their performance, and use this analysis to design better systems. The book is devoted to the study of important classes of stochastic processes: discrete and continuous time Markov processes, Poisson processes, renewal and regenerative processes, semi-Markov processes, queueing models, and diffusion processes. The book systematically studies the short-term and the long-term behavior, cost/reward models, and first passage times. All the material is illustrated with many examples, and case studies. The book provides a concise review of probability in the appendix. The book emphasizes numerical answers to the problems. A collection of MATLAB programs to accompany...

  19. Surplus analysis of Sparre Andersen insurance risk processes

    CERN Document Server

    Willmot, Gordon E

    2017-01-01

    This carefully written monograph covers the Sparre Andersen process in an actuarial context using the renewal process as the model for claim counts. A unified reference on Sparre Andersen (renewal risk) processes is included, often missing from existing literature. The authors explore recent results and analyse various risk theoretic quantities associated with the event of ruin, including the time of ruin and the deficit of ruin. Particular attention is given to the explicit identification of defective renewal equation components, which are needed to analyse various risk theoretic quantities and are also relevant in other subject areas of applied probability such as dams and storage processes, as well as queuing theory. Aimed at researchers interested in risk/ruin theory and related areas, this work will also appeal to graduate students in classical and modern risk theory and Gerber-Shiu analysis.

  20. Applying crime scene analysis to the prediction of sexual recidivism in stranger rapes.

    Science.gov (United States)

    Lehmann, Robert J B; Goodwill, Alasdair M; Gallasch-Nemitz, Franziska; Biedermann, Jürgen; Dahle, Klaus-Peter

    2013-08-01

    The current study sought to improve the predictive accuracy of sexual recidivism using the Static-99 risk assessment tool by the addition of detailed crime scene analysis (CSA). CSA was carried out using a Behavioral Thematic Analysis (BTA) approach, the gold-standard in CSA. BTA was conducted on a sample of 167 stranger rape cases using nonmetric multidimensional scaling (MDS). The BTA procedure revealed three behavioral themes of hostility, criminality, and sexual exploitation, consistent with previous research in sexual offending CSA. Logistic regression analysis indicated that the criminality theme was significantly predictive of sexual recidivism and also significantly correlated with previous sexual offense history. Further, the criminality theme led to a significant increase in the incremental validity of the Static-99 actuarial risk assessment instrument for the prediction of sexual recidivism.

  1. Analysis

    DEFF Research Database (Denmark)

    Mathiesen, Brian Vad; Liu, Wen; Zhang, Xiliang

    2014-01-01

    three major technological changes: energy savings on the demand side, efficiency improvements in energy production, and the replacement of fossil fuels by various sources of renewable energy. Consequently, the analysis of these systems must include strategies for integrating renewable sources...

  2. A review and meta-analysis of the patient factors associated with psychiatric in-patient aggression.

    Science.gov (United States)

    Dack, C; Ross, J; Papadopoulos, C; Stewart, D; Bowers, L

    2013-04-01

    To combine the results of earlier comparison studies of in-patient aggression to quantitatively assess the strength of the association between patient factors and i) aggressive behaviour,ii) repetitive aggressive behaviour. A systematic review and meta-analysis of empirical articles and reports of comparison studies of aggression and non-aggression within adult psychiatric in-patient settings. Factors that were significantly associated with in-patient aggression included being younger, male, involuntary admissions, not being married, a diagnosis of schizophrenia, a greater number of previous admissions, a history of violence, a history of self-destructive behaviour and a history of substance abuse. The only factors associated with repeated in-patient aggression were not being male, a history of violence and a history of substance abuse. By comparing aggressive with non-aggressive patients, important differences between the two populations may be highlighted. These differences may help staff improve predictions of which patients might become aggressive and enable steps to be taken to reduce an aggressive incident occurring using actuarial judgements. However, the associations found between these actuarial factors and aggression were small. It is therefore important for staff to consider dynamic factors such as a patient's current state and the context to reduce in-patient aggression. © 2013 John Wiley & Sons A/S. Published by Blackwell Publishing Ltd.

  3. Prognostic factors for relapse in stage I seminoma managed by surveillance: a pooled analysis

    DEFF Research Database (Denmark)

    Warde, Padraig; Specht, Lena; Horwich, Alan

    2002-01-01

    PURPOSE: Several management options are available to patients with stage I seminoma, including adjuvant radiotherapy, surveillance, and adjuvant chemotherapy. We performed a pooled analysis of patients from the four largest surveillance studies to better delineate prognostic factors associated...... with disease progression. PATIENTS AND METHODS: Individual patient data were obtained from each center (Princess Margaret Hospital, Danish Testicular Cancer Study Group, Royal Marsden Hospital, and Royal London Hospital) for 638 patients. Tumor characteristics (size, histologic subtype, invasion of rete testis......, and tumor invasion into small vessels [SVI]) as well as age at diagnosis were analyzed for prognostic importance for relapse. RESULTS: With a median follow-up of 7.0 years (range, 0.02 to 17.5 years), 121 relapses were observed for an actuarial 5-year relapse-free rate (RFR) of 82.3%. On univariate analysis...

  4. Analysis

    CERN Document Server

    Maurin, Krzysztof

    1980-01-01

    The extraordinarily rapid advances made in mathematics since World War II have resulted in analysis becoming an enormous organism spread­ ing in all directions. Gone for good surely are the days of the great French "courses of analysis" which embodied the whole of the "ana­ lytical" knowledge of the times in three volumes-as the classical work of Camille Jordan. Perhaps that is why present-day textbooks of anal­ ysis are disproportionately modest relative to the present state of the art. More: they have "retreated" to the state before Jordan and Goursat. In recent years the scene has been changing rapidly: Jean Dieudon­ ne is offering us his monumentel Elements d'Analyse (10 volumes) written in the spirit of the great French Course d'Analyse. To the best of my knowledge, the present book is the only one of its size: starting from scratch-from rational numbers, to be precise-it goes on to the theory of distributions, direct integrals, analysis on com­ plex manifolds, Kahler manifolds, the theory of sheave...

  5. A flexible model for actuarial risks under dependence

    NARCIS (Netherlands)

    Albers, Willem/Wim; Kallenberg, W.C.M.; Lukocius, V.

    Methods for computing risk measures, such as stop-loss premiums, tacitly assume independence of the underlying individual risks. This can lead to huge errors even when only small dependencies occur. In the present paper, a general model is developed which covers what happens in practice in a

  6. Mating Reverses Actuarial Aging in Female Queensland Fruit Flies

    OpenAIRE

    Yap, Sarsha; Fanson, Benjamin G.; Taylor, Phillip W.

    2015-01-01

    Animals that have a long pre-reproductive adult stage often employ mechanisms that minimize aging over this period in order to preserve reproductive lifespan. In a remarkable exception, one tephritid fruit fly exhibits substantial pre-reproductive aging but then mitigates this aging during a diet-dependent transition to the reproductive stage, after which life expectancy matches that of newly emerged flies. Here, we ascertain the role of nutrients, sexual maturation and mating in mitigation o...

  7. 29 CFR 4010.8 - Plan actuarial information.

    Science.gov (United States)

    2010-07-01

    ... exempt plan) maintained by any member of the filer's controlled group, each filer is required to provide... benefits and retirement supplements, regardless of whether such benefits are protected by the anti-cutback... cooperatives, certain plans affected by settlement agreement with PBGC, and certain plans of government...

  8. Mating Reverses Actuarial Aging in Female Queensland Fruit Flies

    National Research Council Canada - National Science Library

    Yap, Sarsha; Fanson, Benjamin G; Taylor, Phillip W

    2015-01-01

    ..., after which life expectancy matches that of newly emerged flies. Here, we ascertain the role of nutrients, sexual maturation and mating in mitigation of previous aging in female Queensland fruit flies...

  9. On capital allocation for stochastic arrangement increasing actuarial risks

    Directory of Open Access Journals (Sweden)

    Pan Xiaoqing

    2017-01-01

    Full Text Available This paper studies the increasing convex ordering of the optimal discounted capital allocations for stochastic arrangement increasing risks with stochastic arrangement decreasing occurrence times. The application to optimal allocation of policy limits is presented as an illustration as well.

  10. Actuarial Applications and Estimation of Extended CreditRisk+

    Directory of Open Access Journals (Sweden)

    Jonas Hirz

    2017-03-01

    Full Text Available We introduce an additive stochastic mortality model which allows joint modelling and forecasting of underlying death causes. Parameter families for mortality trends can be chosen freely. As model settings become high dimensional, Markov chain Monte Carlo (MCMC is used for parameter estimation. We then link our proposed model to an extended version of the credit risk model CreditRisk+. This allows exact risk aggregation via an efficient numerically stable Panjer recursion algorithm and provides numerous applications in credit, life insurance and annuity portfolios to derive P&L distributions. Furthermore, the model allows exact (without Monte Carlo simulation error calculation of risk measures and their sensitivities with respect to model parameters for P&L distributions such as value-at-risk and expected shortfall. Numerous examples, including an application to partial internal models under Solvency II, using Austrian and Australian data are shown.

  11. What Actuaries Might Learn About Life | Asher | South African ...

    African Journals Online (AJOL)

    This paper presents the author\\'s view that the professional life assurance courses for subjects 302 and 402 fail to consider a number of important technical and ethical elements of management and economic theory. These include the marketing concept, the financial life cycle, macro-pricing and public relations, which are ...

  12. Modelización financiero-actuarial de un seguro de dependencia = Long Term Care Insurance Actuarial Model

    OpenAIRE

    Herranz Peinado, Patricia; Guerrero Casas, Flor M.; Segovia González, M. Manuela

    2008-01-01

    España ha seguido la tendencia de otros países en cuanto a la cobertura de las personas dependientes, es decir, aquellas que necesitan ayuda para realizar las tareas básicas de la vida diaria, y lo ha hecho mediante la aprobación de la Ley de Promoción de la Autonomía Personal y Atención a las personas en situación de Dependencia, que se basa en la financiación pública. A pesar de los esfuerzos para el desarrollo de la Ley, ésta no está dando los frutos que debiera haber dado y se hace necesa...

  13. Microwave ablation versus transarterial chemoembolization in large hepatocellular carcinoma: prospective analysis.

    Science.gov (United States)

    Abdelaziz, Ashraf Omar; Nabeel, Mohamed Mahmoud; Elbaz, Tamer Mahmoud; Shousha, Hend Ibrahim; Hassan, Eman Medhat; Mahmoud, Sherif Hamdy; Rashed, Noha Ali; Ibrahim, Mostafa Mohamed; Abdelmaksoud, Ahmed Hosni

    2015-04-01

    Limited therapies are offered for large hepatocellular carcinoma (HCC). It carries dismal prognosis and efforts tried changing its management from a palliative to a curative mode. Transarterial chemoembolization (TACE) is a palliative procedure that may have survival benefit if compared to non-management of large lesions. Microwave ablation (MWA) has emerged as a relatively new technique with promise of larger and faster ablation. We aim to evaluate the efficacy and safety of percutaneous MWA versus TACE for large tumors (5-7 cm) and to assess their effects on local tumor progression and survival. Sixty-four patients with large lesions are managed in our multidisciplinary HCC clinic and were divided into two groups treated either by MWA or TACE. Complete response rate, local recurrence, de novo lesions, and overall survival analysis are compared between both procedures. Both groups were comparable as regards the demographic and ultrasonographic features. MWA showed higher rates of complete ablation (75%) with fewer sessions, lower incidence of tumor recurrence (p = 0.02), development of de novo lesions (p = 0.03), occurrence of post-treatment ascites (p = 0.003), and higher survival rates (p = 0.04). The mean survival of the microwave group was 21.7 months with actuarial probability of survival at 12 and 18 months 78.2% and 68.4%, respectively. The mean survival of the TACE group was 13.7 months with actuarial probability of survival at 12 and 18 months being 52.4% and 28.6%, respectively. MWA showed better results than TACE in the management of large HCC lesions.

  14. Multicenter, phase III trial comparing selenium supplementation with observation in gynecologic radiation oncology: follow-up analysis of the survival data 6 years after cessation of randomization.

    Science.gov (United States)

    Muecke, Ralph; Micke, Oliver; Schomburg, Lutz; Glatzel, Michael; Reichl, Berthold; Kisters, Klaus; Schaefer, Ulrich; Huebner, Jutta; Eich, Hans T; Fakhrian, K; Adamietz, Irenaeus A; Buentzel, Jens

    2014-11-01

    In 2010, we reported that selenium (Se) supplementation during radiation therapy (RT) is effective for increasing blood Se levels in Se-deficient cervical and uterine cancer patients, and reduced the number of episodes and severity of RT-induced diarrhea. In the current study, we examine whether of Se supplementation during adjuvant RT affects long-term survival of these patients. Former patients were identified and questioned with respect to their health and well-being. A total of 81 patients were randomized in the initial supplementation study, 39 of whom received Se (selenium group, SeG) and 42 of whom served as controls (control group, CG). When former patients were reidentified after a median follow-up of 70 months (range = 0-136), the actuarial 10-year disease-free survival rate in the SeG was 80.1% compared to 83.2% in the CG (P = .65), and the actuarial 10-year overall survival rate of patients in the SeG was 55.3% compared to 42.7% in the CG (P = .09). Our extended follow-up analysis demonstrates that Se supplementation had no influence on the effectiveness of the anticancer irradiation therapy and did not negatively affect patients' long-term survival. In view of its positive effects on RT-induced diarrhea, we consider Se supplementation to be a meaningful and beneficial adjuvant treatment in Se-deficient cervical and uterine cancer patients while undergoing pelvic radiation therapy. © The Author(s) 2014.

  15. 47 CFR 32.6720 - General and administrative.

    Science.gov (United States)

    2010-10-01

    ... management studies, options and contingency plans, and economic strategic analysis. (c) Providing accounting... investment fund management (including actuarial services), securities management, debt trust administration...

  16. Manifestation pattern of early-late vaginal morbidity after definitive radiation (chemo)therapy and image-guided adaptive brachytherapy for locally advanced cervical cancer: an analysis from the EMBRACE study.

    Science.gov (United States)

    Kirchheiner, Kathrin; Nout, Remi A; Tanderup, Kari; Lindegaard, Jacob C; Westerveld, Henrike; Haie-Meder, Christine; Petrič, Primož; Mahantshetty, Umesh; Dörr, Wolfgang; Pötter, Richard

    2014-05-01

    Brachytherapy in the treatment of locally advanced cervical cancer has changed substantially because of the introduction of combined intracavitary/interstitial applicators and an adaptive target concept, which is the focus of the prospective, multi-institutional EMBRACE study (www.embracestudy.dk) on image-guided adaptive brachytherapy (IGABT). So far, little has been reported about the development of early to late vaginal morbidity in the frame of IGABT. Therefore, the aim of the present EMBRACE analysis was to evaluate the manifestation pattern of vaginal morbidity during the first 2 years of follow-up. In total, 588 patients with a median follow-up time of 15 months and information on vaginal morbidity were included. Morbidity was prospectively assessed at baseline, every 3 months during the first year, and every 6 months in the second year according to the Common Terminology Criteria for Adverse Events, version 3, regarding vaginal stenosis, dryness, mucositis, bleeding, fistula, and other symptoms. Crude incidence rates, actuarial probabilities, and prevalence rates were analyzed. At 2 years, the actuarial probability of severe vaginal morbidity (grade ≥3) was 3.6%. However, mild and moderate vaginal symptoms were still pronounced (grade ≥1, 89%; grade ≥2, 29%), of which the majority developed within 6 months. Stenosis was most frequently observed, followed by vaginal dryness. Vaginal bleeding and mucositis were mainly mild and infrequently reported. Severe vaginal morbidity within the first 2 years after definitive radiation (chemo)therapy including IGABT with intracavitary/interstitial techniques for locally advanced cervical cancer is limited and is significantly less than has been reported from earlier studies. Thus, the new adaptive target concept seems to be a safe treatment with regard to the vagina being an organ at risk. However, mild to moderate vaginal morbidity is still pronounced with currently applied IGABT, and it needs further attention

  17. Loss Distribution Approach (LDA: metodología actuarial aplicada al riesgo operacional Loss Distribution Approach (LDA: actuarial methodology apply to operational risk

    Directory of Open Access Journals (Sweden)

    Luis Ceferino Franco Arbeláez

    2008-07-01

    Full Text Available Este artículo es resultado de un proyecto de investigación sobre la gestión integral del riesgo operacional promovido por la Vicerrectoria de Investigaciones de la Universidad de Medellín, y cofinanciado por una firma comisionista. Se presenta una aplicación del modelo LDA, el cual se basa en la recopilación de los datos de pérdidas históricas (frecuencia y severidad, que se registran internamente en las organizaciones. Dichos datos pueden ser complementados con datos externos. Estas pérdidas son clasificadas en una matriz que relaciona las líneas de negocio de la organización y los eventos operacionales de pérdida, a partir de la cual se calcula la carga de capital. La aplicación se desarrolló para una entidad financiera. El artículo está organizado de la siguiente forma: la primera sección es introductoria al tema. En la segunda parte se presenta formalmente el modelo LDA; luego se realiza una aplicación, y en la cuarta sección se presentan algunas conclusiones.This paper is the result of a research project on integrated management of operational risk, promoted by Universidad de Medellin Research Vice-Principal's Office and co-financed by a financial company. It presents an application of the LDA model, which is based on data collection of historical losses (frequency and severity, which are recorded internally in organizations. Such data can be supplemented with external data. These losses are classified in a matrix that relates business lines of the organization and operational loss events, from which capital charge is estimated. The application was developed for a financial institution. The paper is organized as follows: The first section is introductory to the subject. The second part formally presents a LDA model; then an application is made, and in the fourth part some conclusions are presented.

  18. The empirical analysis of cash balance pension scheme ...

    African Journals Online (AJOL)

    ... differed only on how monthly wages of employees are computed at entry into the schemes but contingent on employee's experience and desirable skills. The analyses are based upon the values obtained from the actuarial valuation models that incorporate assumptions that satisfy Nigerian pension statutory requirements.

  19. Five-year outcome of patients classified in the "unsuitable" category using the American Society of Therapeutic Radiology and Oncology (ASTRO) Consensus Panel guidelines for the application of accelerated partial breast irradiation: an analysis of patients treated on the American Society of Breast Surgeons MammoSite® Registry trial.

    Science.gov (United States)

    Beitsch, Peter; Vicini, Frank; Keisch, Martin; Haffty, Bruce; Shaitelman, Simona; Lyden, Maureen

    2010-10-01

    We applied the ASTRO Consensus Panel (CP) guidelines for the application of accelerated partial breast irradiation (APBI) to patients treated with this technique on the ASBS MammoSite® registry trial to determine potential differences in outcome of patients classified in the "unsuitable" category. Of 1,449 cases treated with APBI on the registry trial, 176 fit the criteria for the unsuitable category: 130 cases were 3 cm, and 9 had an EIC >3 cm. Rates of ipsilateral breast tumor recurrence (IBTR) and regional nodal failure (RNF) were assessed. Median follow-up was 53.6 months. The 5-year actuarial rate of IBTR for unsuitable cases was 5.25% (RNF rate was 0.63%). By comparison, the 5-year actuarial IBTR rates for various subsets of patients were: all 1,449 cases, 3.89% (p = 0.2365); all 1,449 cases excluding unsuitable cases [n =1,273] (3.6%, p =0.1683); invasive only cases [n = 1,255] (3.86%, p = 0.2464); and invasive only cases excluding unsuitable invasive cases [n =1,105] (3.89%, p = 0.2396). On univariate analysis for variables potentially associated with IBTR in all 1,255 cases with invasive cancer (including age, tumor size, nodal status, overall stage, margin status, ER status, presence of an EIC, and ASTRO unsuitable category), only negative ER (-) status was associated with the 5-year rate of IBTR (p = 0002). No other variable (including unsuitable CP designation) was associated with IBTR. The ASTRO CP guideline designation of unsuitable did not differentiate a subset of patients with a significantly worse rate of IBTR when treated with the MammoSite® breast brachytherapy catheter to deliver APBI.

  20. CLUSTER ANALYSIS OF NATURAL DISASTER LOSSES IN POLISH AGRICULTURE

    Directory of Open Access Journals (Sweden)

    Grzegorz STRUPCZEWSKI

    2015-04-01

    Full Text Available Agricultural production risk is of special nature due to a great number of hazards, relative weakness of production entities on the market and high ambiguity which is greater than in industrial production. Natural disasters occurring very frequently, at simultaneous low percentage of insured farmers, cause damage of such sizes that force the state to organise current financial aid (for instance in the form of preferential natural disaster loans. This aid is usually not sufficient. On the other hand, regional diversity of the risk level does not positively affect the development of insurance. From the perspective of insurance companies and policymakers it becomes highly important to investigate the spatial structure of losses in agriculture caused by natural disasters. The purpose of the research is to classify the 16 Polish voivodeships into clusters in order to show differences between them according to the criterion of level of damage in agricultural farms caused by natural disasters. On the basis of the cluster analysis it was demonstrated that 11 voivodeships form quite a homogeneous group in terms of size of damage in agriculture (the value of damage in cultivations and the acreage of destroyed cultivations are two most important factors determining affiliation to the cluster, however, the profile of loss occurring in other five voivodeships has a very individual course and requires separate handling in the actuarial sense. It was also proved that high value of losses in agriculture in the absolute sense in given voivodeships do not have to mean high vulnerability of agricultural farms from these voivodeships to natural risks.

  1. Clinical Significance of ErbB Receptor Family in Urothelial Carcinoma of the Bladder: A Systematic Review and Meta-Analysis

    Directory of Open Access Journals (Sweden)

    Yuh-Shyan Tsai

    2012-01-01

    Full Text Available The prognostic importance of examining ErbB receptor family expression in human bladder cancer remains uncertain. Using published evidence, we examined the clinical value and the updated results of clinical trials targeting ErbB receptor family members. Twenty-seven articles from 65 references related to ErbB receptor expression assessment in bladder cancer were reviewed. The estimates included the association significance, hazard ratios, and 95% confidence intervals (CIs from actuarial curves and survival analyses. A meta-analysis was done on those reports using univariate log-rank tests or a Cox-regression model. The methods of analysis and study subjects chosen varied widely among studies. The overall risks of disease progression for patients with EGFR or ErbB2 overexpression were 4.5 (95% CI: 2.5–8.4 and 1.1 (95% CI: 0.6–1.9, and the risks of mortality were 3.0 (95% CI: 1.6–5.9 and 1.1 (95% CI: 1.0–1.2, respectively. However, the significance of coexpression patterns of the ErbB receptor family remains controversial. None of six clinical trials yielded convincing results for blockading ErbB receptor signaling in urothelial carcinoma. The results of this analysis suggest that assessing co-expression patterns of the ErbB family may provide better prognostic information for bladder cancer patients.

  2. 42 CFR 457.431 - Actuarial report for benchmark-equivalent coverage.

    Science.gov (United States)

    2010-10-01

    ... AND HUMAN SERVICES (CONTINUED) STATE CHILDREN'S HEALTH INSURANCE PROGRAMS (SCHIPs) ALLOTMENTS AND... of privately insured children of the age of those expected to be covered under the State plan; (5) Applying the same principles and factors in comparing the value of different coverage (or categories of...

  3. SOCIAL INFRASTRUCTURE OF ACTUARIAL PENSION PAYMENTS AS A WAY OF OVERCOMING A BUDGET DEFICIT

    Directory of Open Access Journals (Sweden)

    Oleg A. Donichev

    2013-01-01

    Full Text Available The article is devoted to the problem of overcoming the lack of funding the revenue side of the Pension Fund of the Russian Federation. The ways of further development of the funded component of future pension payments are proposed in the article. The need to form in regions the adequate social infrastructure which could enable to develop the funded pension systems is specified in the article.

  4. Actuarial Risk Assessment and Recidivism in a Sample of UK Intellectually Disabled Sexual Offenders

    Science.gov (United States)

    Wilcox, Dan; Beech, Anthony; Markall, Helena F.; Blacker, Janine

    2009-01-01

    This study examines the effectiveness of three risk assessment instruments: Static-99, Risk Matrix 2000 (RM2000) and the Rapid Risk of Sex Offender Recidivism (RRASOR), in predicting sexual recidivism among 27 intellectually disabled sex offenders. The overall sexual offence reconviction rate was 30%, while non-recidivists remained offence-free…

  5. 78 FR 64943 - Medicare Program; Medicare Part B Monthly Actuarial Rates, Premium Rate, and Annual Deductible...

    Science.gov (United States)

    2013-10-30

    ... of the Tax Equity and Fiscal Responsibility Act of 1982 (TEFRA) (Pub. L. 97-248) suspended this... contingency margin for 2014. Starting in 2011, manufacturers and importers of brand-name prescription drugs... brand-name drug fees is estimated to be $3 billion. The contingency margin has been reduced to account...

  6. 76 FR 67572 - Medicare Program; Medicare Part B Monthly Actuarial Rates, Premium Rate, and Annual Deductible...

    Science.gov (United States)

    2011-11-01

    ... of the Tax Equity and Fiscal Responsibility Act of 1982 (TEFRA) (Pub. L. 97-248) suspended this..., manufacturers and importers of brand-name prescription drugs will pay a fee that is allocated to the Part B account of the SMI trust. For 2012, the total of these brand-name drug fees will be $2.8 billion. The...

  7. 77 FR 69850 - Medicare Program; Medicare Part B Monthly Actuarial Rates, Premium Rate, and Annual Deductible...

    Science.gov (United States)

    2012-11-21

    ... of the Tax Equity and Fiscal Responsibility Act of 1982 (TEFRA) (Pub. L. 97-248) suspended this..., manufacturers and importers of brand-name prescription drugs have paid a fee that is allocated to the Part B account of the SMI trust. For 2013, the total of these brand-name drug fees is estimated to be $2.7...

  8. 75 FR 68790 - Medicare Program; Medicare Part B Monthly Actuarial Rates, Premium Rate, and Annual Deductible...

    Science.gov (United States)

    2010-11-09

    ... Title II social security benefits. However, the passage of section 124 of the Tax Equity and Fiscal... importers of brand-name prescription drugs will pay a fee that is allocated to the Part B account of the SMI trust. For 2011, the total of these brand-name drug fees will be $2.5 billion. The contingency margin...

  9. 78 FR 8596 - Hartford Financial Services Group, Inc., Commercial/Actuarial/ Information Delivery Services (IDS...

    Science.gov (United States)

    2013-02-06

    ... Determination Regarding Application for Reconsideration for the workers and former workers of Hartford Financial... Hartford-IDS Group provide business and information technology applications for corporate, regulatory, and... Officer, a mis- interpretation of facts or of the law justified reconsideration of the decision. The...

  10. The minimal entropy martingale measure in a market of traded financial and actuarial risks

    NARCIS (Netherlands)

    Dhaene, J.; Stassen, B.; Devolder, P.; Vellekoop, M.

    2015-01-01

    In arbitrage-free but incomplete markets, the equivalent martingale measure QQ for pricing traded assets is not uniquely determined. A possible approach when it comes to choosing a particular pricing measure is to consider the one that is ‘closest’ to the physical probability measure PP, where

  11. Clinical and Actuarial Prediction of Physical Violence in a Forensic Intellectual Disability Hospital: A Longitudinal Study

    Science.gov (United States)

    McMillan, Dean; Hastings, Richard P.; Coldwell, Jon

    2004-01-01

    Background: There is a high rate of physical violence in populations with intellectual disabilities, and this has been linked to problems for the victim, the assailant, members of staff and services. Despite the clinical significance of this behaviour, few studies have assessed methods of predicting its occurrence. The present study examined…

  12. On the Actuarial Classification of Children: Fundamental Studies of Classification Agreement.

    Science.gov (United States)

    Macmann, Gregg M.; And Others

    1989-01-01

    A study of 373 students with suspected learning disabilities found that different measures for calculating discrepancies between aptitude and achievement and for measuring achievement resulted in relatively little agreement on appropriate classification. A second study, using computer-simulated data, provided a framework for generalizations to a…

  13. Violence risk prediction. Clinical and actuarial measures and the role of the Psychopathy Checklist.

    Science.gov (United States)

    Dolan, M; Doyle, M

    2000-10-01

    Violence risk prediction is a priority issue for clinicians working with mentally disordered offenders. To review the current status of violence risk prediction research. Literature search (Medline). Key words: violence, risk prediction, mental disorder. Systematic/structured risk assessment approaches may enhance the accuracy of clinical prediction of violent outcomes. Data on the predictive validity of available clinical risk assessment tools are based largely on American and North American studies and further validation is required in British samples. The Psychopathy Checklist appears to be a key predictor of violent recidivism in a variety of settings. Violence risk prediction is an inexact science and as such will continue to provoke debate. Clinicians clearly need to be able to demonstrate the rationale behind their decisions on violence risk and much can be learned from recent developments in research on violence risk prediction.

  14. Sex offender modus operandi stability and relationship with actuarial risk assessment.

    Science.gov (United States)

    Lasher, Michael P; McGrath, Robert J; Cumming, Georgia F

    2015-03-01

    Three studies conducted in Vermont yielded data on 82 sexual recidivists' index offenses (Time 1) and sexual reoffenses (Time 2) across 16 modus operandi (MO) characteristics. The current study examines the stability of these 16 characteristics between Time 1 and Time 2 offenses. Probabilities of Time 1-Time 2 characteristic combinations are reported, including when controlling for static risk as measured by the Static-99R and Vermont Assessment of Sex Offender Risk-2 (VASOR-2). Overall, considerable stability of offenders' MO was evident between Time 1 and Time 2 offenses. Victim characteristics and offense behaviors were the most stable MO characteristics, and degree of force used and victim injury were less stable and trended toward less forceful and less injurious reoffenses. Controlling for static risk had little impact on the patterns of MO stability. © The Author(s) 2014.

  15. Reproductive effort accelerates actuarial senescence in wild birds : An experimental study

    NARCIS (Netherlands)

    Boonekamp, Jelle J.; Salomons, Martijn; Bouwhuis, Sandra; Dijkstra, Cornelis; Verhulst, Simon

    Optimality theories of ageing predict that the balance between reproductive effort and somatic maintenance determines the rate of ageing. Laboratory studies find that increased reproductive effort shortens lifespan, but through increased short-term mortality rather than ageing. In contrast, high

  16. Can we eliminate neoadjuvant chemoradiotherapy in favor of neoadjuvant multiagent chemotherapy for select stage II/III rectal adenocarcinomas: Analysis of the National Cancer Data base.

    Science.gov (United States)

    Cassidy, Richard J; Liu, Yuan; Patel, Kirtesh; Zhong, Jim; Steuer, Conor E; Kooby, David A; Russell, Maria C; Gillespie, Theresa W; Landry, Jerome C

    2017-03-01

    Stage II and III rectal cancers have been effectively treated with neoadjuvant chemoradiotherapy (NCRT) followed by definitive resection. Advancements in surgical technique and systemic therapy have prompted investigation of neoadjuvant multiagent chemotherapy (NMAC) regimens with the elimination of radiation (RT). The objective of the current study was to investigate factors that predict for the use of NCRT versus NMAC and compare outcomes using the National Cancer Data Base (NCDB) for select stage II and III rectal cancers. In the NCDB, 21,707 patients from 2004 through 2012 with clinical T2N1 (cT2N1), cT3N0, or cT3N1 rectal cancers were identified who had received NCRT or NMAC followed by low anterior resection. Kaplan-Meier analyses, log-rank tests, and Cox-proportional hazards regression analyses were conducted along with propensity score matching analysis to reduce treatment selection bias. The 5-year actuarial overall survival (OS) rate was 75% for patients who received NCRT versus 67.2% for those who received NMAC (P Cancer 2017;123:783-93. © 2016 American Cancer Society. © 2016 American Cancer Society.

  17. Modified Bayesian Kriging for Noisy Response Problems for Reliability Analysis

    Science.gov (United States)

    2015-01-01

    52242, USA nicholas-gaul@uiowa.edu Mary Kathryn Cowles Department of Statistics & Actuarial Science College of Liberal Arts and Sciences, The...There have been surrogate modeling methods developed that use Bayesian methods [28-31]. However, none of the methods studied claim to do a full...samples, the maximum distance in each of the spatial directions from any given DoE sample to all the others is roughly three. After studying the

  18. Department of Defenses 2015 Retirement Plan Cost Analysis

    Science.gov (United States)

    2016-06-01

    the private sector. If a private company decides to offer a DB annuity to its employees, those employees must be fully vested in the DB plan by...Retirement Income Security Act for all private sector companies , but does not apply to federal/DOD employees. If DOD was to fully vest SMs according to...2013). Valuation of the military retirement system – September 30, 2011. Washington, DC: DOD Office of the Actuary. Retrieved from http

  19. Risk of isolated nodal failure for non-small cell lung cancer (NSCLC) treated with the elective nodal irradiation (ENI) using 3D-conformal radiotherapy (3D-CRT) techniques--a retrospective analysis.

    Science.gov (United States)

    Kepka, Lucyna; Bujko, Krzysztof; Zolciak-Siwinska, Agnieszka

    2008-01-01

    To estimate retrospectively the rate of isolated nodal failures (INF) in NSCLC patients treated with the elective nodal irradiation (ENI) using 3D-conformal radiotherapy (3D-CRT). One hundred and eighty-five patients with I-IIIB stage treated with 3D-CRT in consecutive clinical trials differing in an extent of the ENI were analyzed. According to the extent of the ENI, two groups were distinguished: extended (n = 124) and limited (n = 61) ENI. INF was defined as regional nodal failure occurring without local progression. Cumulative Incidence of INF (CIINF) was evaluated by univariate and multivariate analysis with regard to prognostic factors. With a median follow up of 30 months, the two-year actuarial overall survival was 35%. The two-year CIINF rate was 12%. There were 16 (9%) INF, eight (6%) for extended and eight (13%) for limited ENI. In the univariate analysis bulky mediastinal disease (BMD), left side, higher N stage, and partial response to RT had a significant negative impact on the CIINF. BMD was the only independent predictor of the risk of incidence of the INF (p = 0.001). INF is more likely to occur in case of more advanced nodal status.

  20. Manifestation Pattern of Early-Late Vaginal Morbidity After Definitive Radiation (Chemo)Therapy and Image-Guided Adaptive Brachytherapy for Locally Advanced Cervical Cancer: An Analysis From the EMBRACE Study

    Energy Technology Data Exchange (ETDEWEB)

    Kirchheiner, Kathrin, E-mail: kathrin.kirchheiner@meduniwien.ac.at [Department of Radiation Oncology, Comprehensive Cancer Center, Medical University of Vienna/General Hospital of Vienna (Austria); Christian Doppler Laboratory for Medical Radiation Research for Radiation Oncology, Medical University of Vienna (Austria); Nout, Remi A. [Department of Clinical Oncology, Leiden University Medical Center (Netherlands); Tanderup, Kari; Lindegaard, Jacob C. [Department of Oncology, Aarhus University Hospital (Denmark); Westerveld, Henrike [Department of Radiotherapy, Academic Medical Centre, University of Amsterdam (Netherlands); Haie-Meder, Christine [Department of Radiotherapy, Gustave-Roussy, Villejuif (France); Petrič, Primož [Department of Radiotherapy, Institute of Oncology Ljubljana (Slovenia); Department of Radiotherapy, National Center for Cancer Care and Research, Doha (Qatar); Mahantshetty, Umesh [Department of Radiation Oncology, Tata Memorial Hospital, Mumbai (India); Dörr, Wolfgang; Pötter, Richard [Department of Radiation Oncology, Comprehensive Cancer Center, Medical University of Vienna/General Hospital of Vienna (Austria); Christian Doppler Laboratory for Medical Radiation Research for Radiation Oncology, Medical University of Vienna (Austria)

    2014-05-01

    Background and Purpose: Brachytherapy in the treatment of locally advanced cervical cancer has changed substantially because of the introduction of combined intracavitary/interstitial applicators and an adaptive target concept, which is the focus of the prospective, multi-institutional EMBRACE study ( (www.embracestudy.dk)) on image-guided adaptive brachytherapy (IGABT). So far, little has been reported about the development of early to late vaginal morbidity in the frame of IGABT. Therefore, the aim of the present EMBRACE analysis was to evaluate the manifestation pattern of vaginal morbidity during the first 2 years of follow-up. Methods and Materials: In total, 588 patients with a median follow-up time of 15 months and information on vaginal morbidity were included. Morbidity was prospectively assessed at baseline, every 3 months during the first year, and every 6 months in the second year according to the Common Terminology Criteria for Adverse Events, version 3, regarding vaginal stenosis, dryness, mucositis, bleeding, fistula, and other symptoms. Crude incidence rates, actuarial probabilities, and prevalence rates were analyzed. Results: At 2 years, the actuarial probability of severe vaginal morbidity (grade ≥3) was 3.6%. However, mild and moderate vaginal symptoms were still pronounced (grade ≥1, 89%; grade ≥2, 29%), of which the majority developed within 6 months. Stenosis was most frequently observed, followed by vaginal dryness. Vaginal bleeding and mucositis were mainly mild and infrequently reported. Conclusion: Severe vaginal morbidity within the first 2 years after definitive radiation (chemo)therapy including IGABT with intracavitary/interstitial techniques for locally advanced cervical cancer is limited and is significantly less than has been reported from earlier studies. Thus, the new adaptive target concept seems to be a safe treatment with regard to the vagina being an organ at risk. However, mild to moderate vaginal morbidity

  1. Efficacy and survival analysis of percutaneous radiofrequency versus microwave ablation for hepatocellular carcinoma: an Egyptian multidisciplinary clinic experience.

    Science.gov (United States)

    Abdelaziz, Ashraf; Elbaz, Tamer; Shousha, Hend Ibrahim; Mahmoud, Sherif; Ibrahim, Mostafa; Abdelmaksoud, Ahmed; Nabeel, Mohamed

    2014-12-01

    Hepatocellular carcinoma (HCC) is a primary tumor of the liver with poor prognosis. For early stage HCC, treatment options include surgical resection, liver transplantation, and percutaneous ablation. Percutaneous ablative techniques (radiofrequency and microwave techniques) emerged as best therapeutic options for nonsurgical patients. We aimed to determine the safety and efficacy of radiofrequency and microwave procedures for ablation of early stage HCC lesions and prospectively follow up our patients for survival analysis. One Hundred and 11 patients with early HCC are managed in our multidisciplinary clinic using either radiofrequency or microwave ablation. Patients are assessed for efficacy and safety. Complete ablation rate, local recurrence, and overall survival analysis are compared between both procedures. Radiofrequency ablation group (n = 45) and microwave ablation group (n = 66) were nearly comparable as regards the tumor and patients characteristics. Complete ablation was achieved in 94.2 and 96.1% of patients managed by radiofrequency and microwave ablation techniques, respectively (p value 0.6) with a low rate of minor complications (11.1 and 3.2, respectively) including subcapsular hematoma, thigh burn, abdominal wall skin burn, and pleural effusion. Ablation rates did not differ between ablated lesions ≤ 3 and 3-5 cm. A lower incidence of local recurrence was observed in microwave group (3.9 vs. 13.5% in radiofrequency group, p value 0.04). No difference between both groups as regards de novo lesions, portal vein thrombosis, and abdominal lymphadenopathy. The overall actuarial probability of survival was 91.6% at 1 year and 86.1% at 2 years with a higher survival rates noticed in microwave group but still without significant difference (p value 0.49). Radiofrequency and microwave ablations led to safe and equivalent ablation and survival rates (with superiority for microwave ablation as regards the incidence of local recurrence).

  2. Construction and Validation of Risk Assessments in a Six-Year Follow-Up of Forensic Patients: A Tridimensional Analysis.

    Science.gov (United States)

    Menzies, Robert; Webster, Christopher D.

    1995-01-01

    Evaluations of the risk of recurrent violence were conducted for 162 Canadian mentally disordered criminal defendants through the assembly of actuarial data, scores from special-to-purpose psychometric instruments, and scaled global predictions of dangerousness to others. Professional clinicians were not more accurate than nonclinical raters. (JPS)

  3. Publications | Page 194 | IDRC - International Development ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    ... Sciences Graduate Training Program (India-Waterloo) : final report (open access). Actuaries assess risks involved in insurance and pensions, through proper product design, pricing, development of underwriting standards, determination of asset management strategies, claims analysis, and enterprise risk management.

  4. Radiotherapy for T1-2N0 glottic cancer: a multivariate analysis of predictive factors for the long-term outcome in 1050 patients and a prospective assessment of quality of life and voice handicap index in a subset of 233 patients.

    Science.gov (United States)

    Al-Mamgani, A; van Rooij, P H; Woutersen, D P; Mehilal, R; Tans, L; Monserez, D; Baatenburg de Jong, R J

    2013-08-01

    To evaluate the outcomes of patients with early stage glottic cancer (GC) treated with radiotherapy (RT). The current study report on a retrospective analysis of oncologic outcome of 1050 patients with T1-2N0 glottic cancer treated with radiotherapy. Prospective assessment of quality of life (QoL) and voice handicap index (VHI) was performed in all patients treated from 2006 onwards (n = 233). Local control (LC), regional control (RC), disease-free survival (DFS), overall survival (OS), quality of life and voice handicap index. After a median follow-up of 90 months (range 3-309), the actuarial rates of local control, regional control, disease-free survival and overall survival were 85%, 99%, 84% and 81% at 5 years and 82%, 98%, 80% and 61% at 10 years, respectively. On multivariate analysis, T2 tumours, smoking after radiotherapy and conventional radiation scheme correlated significantly with poor local control. Patients who continued smoking after radiotherapy had also significantly lower overall survival rates (OR 4.3, P handicap index improved significantly from 37 at baseline to 18 at 48 months. Patients with T2b and those who continued smoking had significantly worse voice handicap index. In the current study, excellent outcome with good quality of life and voice handicap index scores were reported. T2 tumours, in particular T2b, and continuing smoking after radiotherapy correlated significantly with poor local control and worse voice handicap index. © 2013 John Wiley & Sons Ltd.

  5. Long-term follow-up in adult patients with low-grade glioma (WHO II) postoperatively irradiated. Analysis of prognostic factors.

    Science.gov (United States)

    Mucha-Małecka, Anna; Gliński, Bogdan; Hetnał, Marcin; Jarosz, Magdalena; Urbański, Jacek; Frączek-Błachut, Beata; Dymek, Paweł; Małecki, Krzysztof; Chrostowska, Agnieszka

    2012-01-01

    To report the long-term follow-up of a cohort of adult patients with LGG post-operatively irradiated in one institution, and to identify prognostic factors for progression free survival. There is little consensus about the optimal treatment for low-grade glioma (LGG), and the clinical management of LGG is one of the most controversial areas in neurooncology. Radiation therapy is one option for treatment of patients with LGG, whereas other options include postoperative observation. Between 1975 and 2005, 180 patients with LGG (WHO II) received postoperative irradiation after non radical (subtotal or partial) excision. Patients had to be 18 years of age or older, and have histologic proof of supratentorial fibrillary (FA), protoplasmic (PA) or gemistocytic astrocytoma (GA). Radiotherapy was given within 3-10 weeks after surgery. Treatment fields were localized and included the preoperative tumor volume, with a 1-2 cm margin, treated to a total dose of 50-60 Gy in 25-30 fractions over 5-6 weeks. Actuarial ten-year progression free survival (APFS) in the whole group was 19%. The worse prognosis was observed in patients with GA. Ten-year APFS rates for GA, PA and FA were 10%, 18% and 22%, respectively. The findings from our long-term cohort of 180 patients with LGG confirmed by uni- and multivariate analysis demonstrated that only astrocytoma histology significantly determined the prognosis. The best survival was observed in patients with the fibrillary variant, and the worst for the gemistocytic one.

  6. Long-term local control achieved after hypofractionated stereotactic body radiotherapy for adrenal gland metastases: A retrospective analysis of 34 patients

    Energy Technology Data Exchange (ETDEWEB)

    Scorsetti, Marta; Alongi, Filippo [Radiotherapy and Radiosurgery Dept., IRCCS Istituto Clinico Humanitas, Humanitas Cancer Center, Rozzano, Milano (Italy)], Email: filippo.alongi@humanitas.it; Filippi, Andrea Riccardo [Radiation Oncology Unit, Dept. of Medical and Surgical Sciences, Univ. of Turin, Turin (Italy)] [and others

    2012-05-15

    Aims and background. To describe feasibility, tolerability and clinical outcomes of stereotactic body radiation therapy (SBRT) in the treatment of adrenal metastases in 34 consecutive cancer patients. Material and methods. Between March 2004 and July 2010, a total of 34 consecutive patients, accounting for 36 adrenal metastatic lesions, were treated with SBRT. SBRT treatments were delivered by a Linac Varian 600 with microMLC (3DLine, Elekta, Stockholm, Sweden) and a Linac ELEKTA Precise (Elekta). All 34 patients were clinically and radiologically evaluated during and after completion of SBRT. Following outcomes were taken into account: best clinical response at any time, local control, time to systemic progression, time to local progression, overall survival and toxicity. Survival was estimated by the Kaplan-Meier method and factor potentially affecting outcomes were analyzed with Cox regression analysis. Results. Total RT doses ranged from 20 Gy in 4 fractions to 45 Gy in 18 fractions (median dose: 32 Gy; median number of fractions: 4). All doses were prescribed to the 95% isodose line. No cases of Grade {>=} 3 toxicity were recorded. At a median follow-up time of 41 months (range, 12-75) 22 patients were alive. Three of 28 lesions (11%) showed complete response, 13/28 (46%) partial response, 10/28 (36%) stable disease and 2/28 (7%) progressed in the treated area. Local failure was observed in 13 cases. Actuarial local control rates at one and two years were 66% and 32%, respectively. Median time to local progression was 19 months. Median survival was 22 months. Conclusion. SBRT in adrenal gland metastasis is feasible without significant acute and late toxicities, with a good rate of local control. New SBRT fractionation schemes and the possibility to combine new systemic approaches should be investigated in order to further increase local control and reduce systemic disease progression.

  7. Real analysis

    CERN Document Server

    McShane, Edward James

    2013-01-01

    This text surveys practical elements of real function theory, general topology, and functional analysis. Discusses the maximality principle, the notion of convergence, the Lebesgue-Stieltjes integral, function spaces and harmonic analysis. Includes exercises. 1959 edition.

  8. Sensitivity analysis

    Science.gov (United States)

    ... page: //medlineplus.gov/ency/article/003741.htm Sensitivity analysis To use the sharing features on this page, please enable JavaScript. Sensitivity analysis determines the effectiveness of antibiotics against microorganisms (germs) ...

  9. CSF analysis

    Science.gov (United States)

    Cerebrospinal fluid analysis ... Analysis of CSF can help detect certain conditions and diseases. All of the following can be, but ... An abnormal CSF analysis result may be due to many different causes, ... Encephalitis (such as West Nile and Eastern Equine) Hepatic ...

  10. Impacto económico-financiero y actuarial del riesgo climático en la Argentina

    OpenAIRE

    Casparri, María Teresa; Bernardello, Alicia; García Fronti, Javier; Vilker, Ana Silvia

    2012-01-01

    Rossi, María Gabriela y García Fronti, Javier: Gestión empresarial del riesgo medioambiental en la Argentina: regulación y práctica.Vitale, Blanca y Lasanta, Tito I.: Funciones de distribución para la predicción de eventos ambientales extremos.Casparri, María Teresa y Squillace, Carla: Planeamiento energético y valuación de mitigación de GEI: Modelo Leap. Casparri, María Teresa; Fusco, Miguel Ángel y García Fronti, Javier: La complementariedad de los seguros y los derivados en el mercado de ...

  11. Finding workers, offenders, or students most at-risk for violence: actuarial tests save lives and resources.

    Science.gov (United States)

    Zagar, Robert John; Kovach, Joseph W; Basile, Benjamin; Hughes, John Russell; Grove, William M; Busch, Kenneth G; Zablocki, Michael; Osnowitz, William; Neuhengen, Jonas; Liu, Yutong; Zagar, Agata Karolina

    2013-12-01

    147 adults (107 men, 40 women) and 89 adolescents (61 boys, 28 girls), selected randomly from referrals and volunteers, were given the Ammons Quick Test (QT), the Beck Suicide Scale (BSS), the Minnesota Multiphasic Personality Inventory Second (MMPI-2) or Adolescent Versions (MMPI-A), the Raven's Advanced Progressive Matrices, and the Standard Predictor (SP) of Violence Potential Adult or Adolescent Versions. The goals were to: (a) demonstrate computer and paper-and-pencil tests correlated; (b) validate tests to identify at-risk for violence; (c) show that identifying at-risk saves lives and resources; and (d) find which industries benefited from testing at-risk. Paper-and-pencil vs. computer test correlations (.83-.99), sensitivity (.97-.98), and specificity (.50-.97) were computed. Testing at-risk saves lives and resources. Critical industries for testing at-risk individuals may include airlines, energy generating industries, insurance, military, nonprofit-religious, prisoners, trucking or port workers, and veterans.

  12. The development and validation of the Youth Actuarial Care Needs Assessment Tool for Non-Offenders (Y-ACNAT-NO)

    NARCIS (Netherlands)

    Assink, M.; van der Put, C.E.; Oort, F.J.; Stams, G.J.J.M.

    2015-01-01

    Background: In The Netherlands, police officers not only come into contact with juvenile offenders, but also with a large number of juveniles who were involved in a criminal offense, but not in the role of a suspect (i.e., juvenile non-offenders). Until now, no valid and reliable instrument was

  13. 76 FR 18649 - Technical Revisions to Actuarial Information on Form 5500 Annual Return/Report for Pension Plans...

    Science.gov (United States)

    2011-04-05

    ... Form 5500 Annual Return/Report for Pension Plans Electing Funding Alternatives Under Pension Relief Act... defined benefit pension plans under the Preservation of Access to Care for Medicare Beneficiaries and Pension Relief Act of 2010 (Pension Relief Act). The information that would be required either by way of...

  14. Risk Assessments by Female Victims of Intimate Partner Violence: Predictors of Risk Perceptions and Comparison to an Actuarial Measure

    Science.gov (United States)

    Connor-Smith, Jennifer K.; Henning, Kris; Moore, Stephanie; Holdford, Robert

    2011-01-01

    Recent studies support the validity of both structured risk assessment tools and victim perceptions as predictors of risk for repeat intimate partner violence (IPV). Combining structured risk assessments and victim risk assessments leads to better predictions of repeat violence than either alone, suggesting that the two forms of assessment provide…

  15. 5 CFR 839.1118 - Will my annuity be actuarially reduced because I had Government contributions in my TSP account?

    Science.gov (United States)

    2010-01-01

    ... because I had Government contributions in my TSP account? 839.1118 Section 839.1118 Administrative... contributions in my TSP account? Retirees and survivors of deceased employees who received a Government contribution to their TSP account after being corrected to FERS and who later elect CSRS Offset under the...

  16. Fourier analysis

    CERN Document Server

    Stade, Eric

    2005-01-01

    A reader-friendly, systematic introduction to Fourier analysis Rich in both theory and application, Fourier Analysis presents a unique and thorough approach to a key topic in advanced calculus. This pioneering resource tells the full story of Fourier analysis, including its history and its impact on the development of modern mathematical analysis, and also discusses essential concepts and today's applications. Written at a rigorous level, yet in an engaging style that does not dilute the material, Fourier Analysis brings two profound aspects of the discipline to the forefront: the wealth of ap

  17. Dimensional Analysis

    Indian Academy of Sciences (India)

    to those of the prototype. It is here that the real power of dimensional analysis comes into the picture quite explicitly. Any important application of dimensional analysis requires the construction of ' dimensionless quantities'. Given a set of physical variables necessary to describe the problem at hand, one constructs.

  18. Metabolic Analysis

    Science.gov (United States)

    Tolstikov, Vladimir V.

    Analysis of the metabolome with coverage of all of the possibly detectable components in the sample, rather than analysis of each individual metabolite at a given time, can be accomplished by metabolic analysis. Targeted and/or nontargeted approaches are applied as needed for particular experiments. Monitoring hundreds or more metabolites at a given time requires high-throughput and high-end techniques that enable screening for relative changes in, rather than absolute concentrations of, compounds within a wide dynamic range. Most of the analytical techniques useful for these purposes use GC or HPLC/UPLC separation modules coupled to a fast and accurate mass spectrometer. GC separations require chemical modification (derivatization) before analysis, and work efficiently for the small molecules. HPLC separations are better suited for the analysis of labile and nonvolatile polar and nonpolar compounds in their native form. Direct infusion and NMR-based techniques are mostly used for fingerprinting and snap phenotyping, where applicable. Discovery and validation of metabolic biomarkers are exciting and promising opportunities offered by metabolic analysis applied to biological and biomedical experiments. We have demonstrated that GC-TOF-MS, HPLC/UPLC-RP-MS and HILIC-LC-MS techniques used for metabolic analysis offer sufficient metabolome mapping providing researchers with confident data for subsequent multivariate analysis and data mining.

  19. Applied analysis

    CERN Document Server

    Lanczos, Cornelius

    1956-01-01

    Basic text for graduate and advanced undergraduate deals with search for roots of algebraic equations encountered in vibration and flutter problems and in those of static and dynamic stability. Other topics devoted to matrices and eigenvalue problems, large-scale linear systems, harmonic analysis and data analysis, more.

  20. Job Analysis

    OpenAIRE

    Bravená, Helena

    2009-01-01

    This bacherlor thesis deals with the importance of job analysis for personnel activities in the company. The aim of this work is to find the most suitable method of job analysis in a particular enterprise, and continues creating descriptions and specifications of each job.

  1. congregational analysis

    African Journals Online (AJOL)

    2009-12-11

    Dec 11, 2009 ... the theological and empirical identity of congregations informs the need for and the content of the analysis (approach ..... In the article on empirical approaches to congregational analysis. (Nel 2009a), I stated my ..... news of a Creator who loves what he has made and is in no way prepared to give up on ...

  2. Factor Analysis via Components Analysis

    Science.gov (United States)

    Bentler, Peter M.; de Leeuw, Jan

    2011-01-01

    When the factor analysis model holds, component loadings are linear combinations of factor loadings, and vice versa. This interrelation permits us to define new optimization criteria and estimation methods for exploratory factor analysis. Although this article is primarily conceptual in nature, an illustrative example and a small simulation show…

  3. Recursive analysis

    CERN Document Server

    Goodstein, R L

    2010-01-01

    Recursive analysis develops natural number computations into a framework appropriate for real numbers. This text is based upon primary recursive arithmetic and presents a unique combination of classical analysis and intuitional analysis. Written by a master in the field, it is suitable for graduate students of mathematics and computer science and can be read without a detailed knowledge of recursive arithmetic.Introductory chapters on recursive convergence and recursive and relative continuity are succeeded by explorations of recursive and relative differentiability, the relative integral, and

  4. Panel Analysis

    DEFF Research Database (Denmark)

    Brænder, Morten; Andersen, Lotte Bøgh

    2014-01-01

    Based on our 2013-article, ”Does Deployment to War Affect Soldiers' Public Service Motivation – A Panel Study of Soldiers Before and After their Service in Afghanistan”, we present Panel Analysis as a methodological discipline. Panels consist of multiple units of analysis, observed at two or more...... in research settings where it is not possible to distribute units of analysis randomly or where the independent variables cannot be manipulated. The greatest disadvantage in regard to using panel studies is that data may be difficult to obtain. This is most clearly vivid in regard to the use of panel surveys...

  5. Numerical analysis

    CERN Document Server

    Khabaza, I M

    1960-01-01

    Numerical Analysis is an elementary introduction to numerical analysis, its applications, limitations, and pitfalls. Methods suitable for digital computers are emphasized, but some desk computations are also described. Topics covered range from the use of digital computers in numerical work to errors in computations using desk machines, finite difference methods, and numerical solution of ordinary differential equations. This book is comprised of eight chapters and begins with an overview of the importance of digital computers in numerical analysis, followed by a discussion on errors in comput

  6. Analysis I

    CERN Document Server

    Tao, Terence

    2016-01-01

    This is part one of a two-volume book on real analysis and is intended for senior undergraduate students of mathematics who have already been exposed to calculus. The emphasis is on rigour and foundations of analysis. Beginning with the construction of the number systems and set theory, the book discusses the basics of analysis (limits, series, continuity, differentiation, Riemann integration), through to power series, several variable calculus and Fourier analysis, and then finally the Lebesgue integral. These are almost entirely set in the concrete setting of the real line and Euclidean spaces, although there is some material on abstract metric and topological spaces. The book also has appendices on mathematical logic and the decimal system. The entire text (omitting some less central topics) can be taught in two quarters of 25–30 lectures each. The course material is deeply intertwined with the exercises, as it is intended that the student actively learn the material (and practice thinking and writing ri...

  7. Analysis II

    CERN Document Server

    Tao, Terence

    2016-01-01

    This is part two of a two-volume book on real analysis and is intended for senior undergraduate students of mathematics who have already been exposed to calculus. The emphasis is on rigour and foundations of analysis. Beginning with the construction of the number systems and set theory, the book discusses the basics of analysis (limits, series, continuity, differentiation, Riemann integration), through to power series, several variable calculus and Fourier analysis, and then finally the Lebesgue integral. These are almost entirely set in the concrete setting of the real line and Euclidean spaces, although there is some material on abstract metric and topological spaces. The book also has appendices on mathematical logic and the decimal system. The entire text (omitting some less central topics) can be taught in two quarters of 25–30 lectures each. The course material is deeply intertwined with the exercises, as it is intended that the student actively learn the material (and practice thinking and writing ri...

  8. Biorefinery Analysis

    Energy Technology Data Exchange (ETDEWEB)

    2016-06-01

    Fact sheet summarizing NREL's techno-economic analysis and life-cycle assessment capabilities to connect research with future commercial process integration, a critical step in the scale-up of biomass conversion technologies.

  9. CSF Analysis

    Science.gov (United States)

    ... Analysis Kidney Stone Risk Panel KRAS Mutation Lactate Lactate Dehydrogenase (LD) Lactoferrin Lactose Tolerance Tests LDL Cholesterol LDL ... or only slightly elevated with viral meningitis. CSF lactate dehydrogenase (LD) — used to differentiate between bacterial and viral ...

  10. Conversation Analysis.

    Science.gov (United States)

    Schiffrin, Deborah

    1990-01-01

    Summarizes the current state of research in conversation analysis, referring primarily to six different perspectives that have developed from the philosophy, sociology, anthropology, and linguistics disciplines. These include pragmatics; speech act theory; interactional sociolinguistics; ethnomethodology; ethnography of communication; and…

  11. Link Analysis

    Science.gov (United States)

    Donoho, Steve

    Link analysis is a collection of techniques that operate on data that can be represented as nodes and links. This chapter surveys a variety of techniques including subgraph matching, finding cliques and K-plexes, maximizing spread of influence, visualization, finding hubs and authorities, and combining with traditional techniques (classification, clustering, etc). It also surveys applications including social network analysis, viral marketing, Internet search, fraud detection, and crime prevention.

  12. Cytometric Analysis

    Directory of Open Access Journals (Sweden)

    Jun Tamura

    1992-01-01

    5.3 ± 0.8%, 2.4 ± 0.6%, 2.9 ± 1.1%, and 1.2 ± 0.6%, at 48, 72, 96, 120, and 168 hours, respectively. This 2-color FCM analysis made a detailed analysis of the cell kinetics in regenerating hepatocytes possible, and may be applied in investigations of various aspects of liver regeneration.

  13. Real analysis

    CERN Document Server

    Loeb, Peter A

    2016-01-01

    This textbook is designed for a year-long course in real analysis taken by beginning graduate and advanced undergraduate students in mathematics and other areas such as statistics, engineering, and economics. Written by one of the leading scholars in the field, it elegantly explores the core concepts in real analysis and introduces new, accessible methods for both students and instructors. The first half of the book develops both Lebesgue measure and, with essentially no additional work for the student, general Borel measures for the real line. Notation indicates when a result holds only for Lebesgue measure. Differentiation and absolute continuity are presented using a local maximal function, resulting in an exposition that is both simpler and more general than the traditional approach. The second half deals with general measures and functional analysis, including Hilbert spaces, Fourier series, and the Riesz representation theorem for positive linear functionals on continuous functions with compact support....

  14. Numerical analysis

    CERN Document Server

    Rao, G Shanker

    2006-01-01

    About the Book: This book provides an introduction to Numerical Analysis for the students of Mathematics and Engineering. The book is designed in accordance with the common core syllabus of Numerical Analysis of Universities of Andhra Pradesh and also the syllabus prescribed in most of the Indian Universities. Salient features: Approximate and Numerical Solutions of Algebraic and Transcendental Equation Interpolation of Functions Numerical Differentiation and Integration and Numerical Solution of Ordinary Differential Equations The last three chapters deal with Curve Fitting, Eigen Values and Eigen Vectors of a Matrix and Regression Analysis. Each chapter is supplemented with a number of worked-out examples as well as number of problems to be solved by the students. This would help in the better understanding of the subject. Contents: Errors Solution of Algebraic and Transcendental Equations Finite Differences Interpolation with Equal Intervals Interpolation with Unequal Int...

  15. Numerical analysis

    CERN Document Server

    Jacques, Ian

    1987-01-01

    This book is primarily intended for undergraduates in mathematics, the physical sciences and engineering. It introduces students to most of the techniques forming the core component of courses in numerical analysis. The text is divided into eight chapters which are largely self-contained. However, with a subject as intricately woven as mathematics, there is inevitably some interdependence between them. The level of difficulty varies and, although emphasis is firmly placed on the methods themselves rather than their analysis, we have not hesitated to include theoretical material when we consider it to be sufficiently interesting. However, it should be possible to omit those parts that do seem daunting while still being able to follow the worked examples and to tackle the exercises accompanying each section. Familiarity with the basic results of analysis and linear algebra is assumed since these are normally taught in first courses on mathematical methods. For reference purposes a list of theorems used in the t...

  16. Real analysis

    CERN Document Server

    DiBenedetto, Emmanuele

    2016-01-01

    The second edition of this classic textbook presents a rigorous and self-contained introduction to real analysis with the goal of providing a solid foundation for future coursework and research in applied mathematics. Written in a clear and concise style, it covers all of the necessary subjects as well as those often absent from standard introductory texts. Each chapter features a “Problems and Complements” section that includes additional material that briefly expands on certain topics within the chapter and numerous exercises for practicing the key concepts. The first eight chapters explore all of the basic topics for training in real analysis, beginning with a review of countable sets before moving on to detailed discussions of measure theory, Lebesgue integration, Banach spaces, functional analysis, and weakly differentiable functions. More topical applications are discussed in the remaining chapters, such as maximal functions, functions of bounded mean oscillation, rearrangements, potential theory, a...

  17. META - ANALYSIS

    Directory of Open Access Journals (Sweden)

    Ivana Ilić

    2009-04-01

    Full Text Available Meta-analysis is a statistical and analytical method which combines and synthesizes different independent studies and integrates their results into a common result. In the past few years, there has been an increasing interest in meta-analysis from both medical researches and statisticians. One of the main targets of clinical research is to obtain reliable results, although clinical trials with the same topic often give contrasting results. Medical practice is strongly influenced by the results of clinical studies if they are brought to light through important scientific journals. This large amount of information often contains scattered data, and discordant conclusions, and sometimes it is very hard to define the quality and validity of each study. Today, a large number of biomedical journals give importance to articles using meta-analysis in their researches. By using meta-analysis as a method of summarizing, integrating and analyzing a large number of independent studies on the same topic and finally pooling their results into a common result, a researcher can achieve relevant, objective and unbiased conclusions, if the procedure is well-conducted and controlled by the experts. The aim of this paper is to provide the clinical researcher with the basic principles of meta-analysis and its concepts in order to perform a valid clinical study and to report results in the correct way. In today’s evidence-based medical practice, it is crucial for anyone who wants to deal seriously with the scientific work in the biomedical field to learn mathematical and statistical principles that build meta-analysis. In that way, this statistical method could be of great importance to the researcher who wants to respond to new demands of modern medical science.

  18. Cluster analysis

    CERN Document Server

    Everitt, Brian S; Leese, Morven; Stahl, Daniel

    2011-01-01

    Cluster analysis comprises a range of methods for classifying multivariate data into subgroups. By organizing multivariate data into such subgroups, clustering can help reveal the characteristics of any structure or patterns present. These techniques have proven useful in a wide range of areas such as medicine, psychology, market research and bioinformatics.This fifth edition of the highly successful Cluster Analysis includes coverage of the latest developments in the field and a new chapter dealing with finite mixture models for structured data.Real life examples are used throughout to demons

  19. Elementary analysis

    CERN Document Server

    Snell, K S; Langford, W J; Maxwell, E A

    1966-01-01

    Elementary Analysis, Volume 2 introduces several of the ideas of modern mathematics in a casual manner and provides the practical experience in algebraic and analytic operations that lays a sound foundation of basic skills. This book focuses on the nature of number, algebraic and logical structure, groups, rings, fields, vector spaces, matrices, sequences, limits, functions and inverse functions, complex numbers, and probability. The logical structure of analysis given through the treatment of differentiation and integration, with applications to the trigonometric and logarithmic functions, is

  20. Nonlinear analysis

    CERN Document Server

    Nanda, Sudarsan

    2013-01-01

    "Nonlinear analysis" presents recent developments in calculus in Banach space, convex sets, convex functions, best approximation, fixed point theorems, nonlinear operators, variational inequality, complementary problem and semi-inner-product spaces. Nonlinear Analysis has become important and useful in the present days because many real world problems are nonlinear, nonconvex and nonsmooth in nature. Although basic concepts have been presented here but many results presented have not appeared in any book till now. The book could be used as a text for graduate students and also it will be useful for researchers working in this field.

  1. Convex analysis

    CERN Document Server

    Rockafellar, Ralph Tyrell

    2015-01-01

    Available for the first time in paperback, R. Tyrrell Rockafellar's classic study presents readers with a coherent branch of nonlinear mathematical analysis that is especially suited to the study of optimization problems. Rockafellar's theory differs from classical analysis in that differentiability assumptions are replaced by convexity assumptions. The topics treated in this volume include: systems of inequalities, the minimum or maximum of a convex function over a convex set, Lagrange multipliers, minimax theorems and duality, as well as basic results about the structure of convex sets and

  2. Outlier analysis

    CERN Document Server

    Aggarwal, Charu C

    2013-01-01

    With the increasing advances in hardware technology for data collection, and advances in software technology (databases) for data organization, computer scientists have increasingly participated in the latest advancements of the outlier analysis field. Computer scientists, specifically, approach this field based on their practical experiences in managing large amounts of data, and with far fewer assumptions- the data can be of any type, structured or unstructured, and may be extremely large.Outlier Analysis is a comprehensive exposition, as understood by data mining experts, statisticians and

  3. Numerical analysis

    CERN Document Server

    Brezinski, C

    2012-01-01

    Numerical analysis has witnessed many significant developments in the 20th century. This book brings together 16 papers dealing with historical developments, survey papers and papers on recent trends in selected areas of numerical analysis, such as: approximation and interpolation, solution of linear systems and eigenvalue problems, iterative methods, quadrature rules, solution of ordinary-, partial- and integral equations. The papers are reprinted from the 7-volume project of the Journal of Computational and Applied Mathematics on '/homepage/sac/cam/na2000/index.html<

  4. Image Analysis

    DEFF Research Database (Denmark)

    The 19th Scandinavian Conference on Image Analysis was held at the IT University of Copenhagen in Denmark during June 15-17, 2015. The SCIA conference series has been an ongoing biannual event for more than 30 years and over the years it has nurtured a world-class regional research and development....... The topics of the accepted papers range from novel applications of vision systems, pattern recognition, machine learning, feature extraction, segmentation, 3D vision, to medical and biomedical image analysis. The papers originate from all the Scandinavian countries and several other European countries...

  5. Regression Analysis

    CERN Document Server

    Freund, Rudolf J; Sa, Ping

    2006-01-01

    The book provides complete coverage of the classical methods of statistical analysis. It is designed to give students an understanding of the purpose of statistical analyses, to allow the student to determine, at least to some degree, the correct type of statistical analyses to be performed in a given situation, and have some appreciation of what constitutes good experimental design

  6. Hydroeconomic analysis

    DEFF Research Database (Denmark)

    Bauer-Gottwein, Peter; Riegels, Niels; Pulido-Velazquez, Manuel

    2017-01-01

    Hydroeconomic analysis and modeling provides a consistent and quantitative framework to assess the links between water resources systems and economic activities related to water use, simultaneously modeling water supply and water demand. It supports water managers and decision makers in assessing...

  7. Survival Analysis

    CERN Document Server

    Miller, Rupert G

    2011-01-01

    A concise summary of the statistical methods used in the analysis of survival data with censoring. Emphasizes recently developed nonparametric techniques. Outlines methods in detail and illustrates them with actual data. Discusses the theory behind each method. Includes numerous worked problems and numerical exercises.

  8. Harmonic Analysis

    Indian Academy of Sciences (India)

    Harish-Chandra, Gelfand and several other mathematicians and physicists, group-theoretic harmonic analysis is a flourishing industry today paving the way to new developments in the con- text of noncompact Lie groups as well as quantum groups. Since B(n, z) = zn the expansion (3) suggests a link between Fourier series.

  9. Harmonic Analysis

    Indian Academy of Sciences (India)

    Home; Journals; Resonance – Journal of Science Education; Volume 1; Issue 10. Harmonic Analysis Fourier Series and Beyond. K R Parthasarathy. Book Review Volume 1 Issue 10 October 1996 pp 87-91. Fulltext. Click here to view fulltext PDF. Permanent link: http://www.ias.ac.in/article/fulltext/reso/001/10/0087-0091 ...

  10. Domain analysis

    DEFF Research Database (Denmark)

    Hjørland, Birger

    2017-01-01

    The domain-analytic approach to knowledge organization (KO) (and to the broader field of library and information science, LIS) is outlined. The article reviews the discussions and proposals on the definition of domains, and provides an example of a domain-analytic study in the field of art studie....... Varieties of domain analysis as well as criticism and controversies are presented and discussed....

  11. Frontier Analysis

    DEFF Research Database (Denmark)

    Assaf, A. George; Josiassen, Alexander

    2016-01-01

    and macro applications of these approaches, summarizing and critically reviewing the characteristics of the existing studies. We also conduct a meta-analysis to create an overview of the efficiency results of frontier applications. This allows for an investigation of the impact of frontier methodology...

  12. Models of Economic Analysis

    OpenAIRE

    Adrian Ioana; Tiberiu Socaciu

    2013-01-01

    The article presents specific aspects of management and models for economic analysis. Thus, we present the main types of economic analysis: statistical analysis, dynamic analysis, static analysis, mathematical analysis, psychological analysis. Also we present the main object of the analysis: the technological activity analysis of a company, the analysis of the production costs, the economic activity analysis of a company, the analysis of equipment, the analysis of labor productivity, the anal...

  13. Harmonic analysis

    CERN Document Server

    Helson, Henry

    2010-01-01

    This second edition has been enlarged and considerably rewritten. Among the new topics are infinite product spaces with applications to probability, disintegration of measures on product spaces, positive definite functions on the line, and additional information about Weyl's theorems on equidistribution. Topics that have continued from the first edition include Minkowski's theorem, measures with bounded powers, idempotent measures, spectral sets of bounded functions and a theorem of Szego, and the Wiener Tauberian theorem. Readers of the book should have studied the Lebesgue integral, the elementary theory of analytic and harmonic functions, and the basic theory of Banach spaces. The treatment is classical and as simple as possible. This is an instructional book, not a treatise. Mathematics students interested in analysis will find here what they need to know about Fourier analysis. Physicists and others can use the book as a reference for more advanced topics.

  14. Complex analysis

    CERN Document Server

    Freitag, Eberhard

    2005-01-01

    The guiding principle of this presentation of ``Classical Complex Analysis'' is to proceed as quickly as possible to the central results while using a small number of notions and concepts from other fields. Thus the prerequisites for understanding this book are minimal; only elementary facts of calculus and algebra are required. The first four chapters cover the essential core of complex analysis: - differentiation in C (including elementary facts about conformal mappings) - integration in C (including complex line integrals, Cauchy's Integral Theorem, and the Integral Formulas) - sequences and series of analytic functions, (isolated) singularities, Laurent series, calculus of residues - construction of analytic functions: the gamma function, Weierstrass' Factorization Theorem, Mittag-Leffler Partial Fraction Decomposition, and -as a particular highlight- the Riemann Mapping Theorem, which characterizes the simply connected domains in C. Further topics included are: - the theory of elliptic functions based on...

  15. Geometric analysis

    CERN Document Server

    Bray, Hubert L; Mazzeo, Rafe; Sesum, Natasa

    2015-01-01

    This volume includes expanded versions of the lectures delivered in the Graduate Minicourse portion of the 2013 Park City Mathematics Institute session on Geometric Analysis. The papers give excellent high-level introductions, suitable for graduate students wishing to enter the field and experienced researchers alike, to a range of the most important areas of geometric analysis. These include: the general issue of geometric evolution, with more detailed lectures on Ricci flow and Kähler-Ricci flow, new progress on the analytic aspects of the Willmore equation as well as an introduction to the recent proof of the Willmore conjecture and new directions in min-max theory for geometric variational problems, the current state of the art regarding minimal surfaces in R^3, the role of critical metrics in Riemannian geometry, and the modern perspective on the study of eigenfunctions and eigenvalues for Laplace-Beltrami operators.

  16. Mathematical analysis

    Science.gov (United States)

    Donaldson, J. A.

    1984-01-01

    Simple continuum models used in the design, analysis, and control of large space structures are examined. Particular emphasis is placed on boundary value problems associated with the Load Correction Method and control problems involving partial differential equations for the large space structure models. Partial differential equations will be used to model a large space structure, base the design of an optimal controller on this model, approximate the resulting optimal control model, and compare the results with data from other methods.

  17. Elastodynamic Analysis

    DEFF Research Database (Denmark)

    Andersen, Lars

    This book contains the lecture notes for the 9th semester course on elastodynamics. The first chapter gives an overview of the basic theory of stress waves propagating in viscoelastic media. In particular, the effect of surfaces and interfaces in a viscoelastic material is studied, and different ....... Thus, in Chapter 3, an alternative semi-analytic method is derived, which may be applied for the analysis of layered half-spaces subject to moving or stationary loads....

  18. Economic analysis

    Energy Technology Data Exchange (ETDEWEB)

    None

    1980-06-01

    The Energy Policy and Conservation Act (EPCA) mandated that minimum energy efficiency standards be established for classes of refrigerators and refrigerator-freezers, freezers, clothes dryers, water heaters, room air conditioners, home heating equipment, kitchen ranges and ovens, central air conditioners, and furnaces. EPCA requires that standards be designed to achieve the maximum improvement in energy efficiency that is technologically feasible and economically justified. Following the introductory chapter, Chapter Two describes the methodology used in the economic analysis and its relationship to legislative criteria for consumer product efficiency assessment; details how the CPES Value Model systematically compared and evaluated the economic impacts of regulation on the consumer, manufacturer and Nation. Chapter Three briefly displays the results of the analysis and lists the proposed performance standards by product class. Chapter Four describes the reasons for developing a baseline forecast, characterizes the baseline scenario from which regulatory impacts were calculated and summarizes the primary models, data sources and assumptions used in the baseline formulations. Chapter Five summarizes the methodology used to calculate regulatory impacts; describes the impacts of energy performance standards relative to the baseline discussed in Chapter Four. Also discussed are regional standards and other program alternatives to performance standards. Chapter Six describes the procedure for balancing consumer, manufacturer, and national impacts to select standard levels. Details of models and data bases used in the analysis are included in Appendices A through K.

  19. Sequential analysis

    CERN Document Server

    Wald, Abraham

    2013-01-01

    In 1943, while in charge of Columbia University's Statistical Research Group, Abraham Wald devised Sequential Design, an innovative statistical inference system. Because the decision to terminate an experiment is not predetermined, sequential analysis can arrive at a decision much sooner and with substantially fewer observations than equally reliable test procedures based on a predetermined number of observations. The system's immense value was immediately recognized, and its use was restricted to wartime research and procedures. In 1945, it was released to the public and has since revolutio

  20. Vector analysis

    CERN Document Server

    Brand, Louis

    2006-01-01

    The use of vectors not only simplifies treatments of differential geometry, mechanics, hydrodynamics, and electrodynamics, but also makes mathematical and physical concepts more tangible and easy to grasp. This text for undergraduates was designed as a short introductory course to give students the tools of vector algebra and calculus, as well as a brief glimpse into these subjects' manifold applications. The applications are developed to the extent that the uses of the potential function, both scalar and vector, are fully illustrated. Moreover, the basic postulates of vector analysis are brou

  1. Poetic Analysis

    DEFF Research Database (Denmark)

    Nielsen, Kirsten

    2010-01-01

    The first part of this article presents the characteristics of Hebrew poetry: features associated with rhythm and phonology, grammatical features, structural elements like parallelism, and imagery and intertextuality. The second part consists of an analysis of Psalm 121. It is argued that assonance...... and alliteration, parallelism and the widely use of imagery creates coherence in the psalm but at the same time ambiguity. According to the heading, the psalm is a song of ascents, but it can be read both as a psalm for pilgrimage and as a psalm of trust. The metaphors can be understood both as metaphors...

  2. Discourse analysis

    OpenAIRE

    佐々木, 雅剛

    2012-01-01

    peer-reviewed Introduction Discourse is all around us: as McCarthy, et al. (2002: 55) so succinctly put it: ‘Life is a constant flow of discourse – of language functioning in one of the many contexts that together make up a culture.’ In an obvious, though nevertheless taken-for-granted, way, language is intrinsic to the creation and maintenance of the institutions and practices that we may wish to investigate as educational researchers; hence the importance of discourse analysis, and it...

  3. Complex Analysis

    CERN Document Server

    Stein, Elias M

    2009-01-01

    With this second volume, we enter the intriguing world of complex analysis. From the first theorems on, the elegance and sweep of the results is evident. The starting point is the simple idea of extending a function initially given for real values of the argument to one that is defined when the argument is complex. From there, one proceeds to the main properties of holomorphic functions, whose proofs are generally short and quite illuminating: the Cauchy theorems, residues, analytic continuation, the argument principle.With this background, the reader is ready to learn a wealth of additional m

  4. Exergy analysis

    DEFF Research Database (Denmark)

    Dovjak, M.; Simone, Angela; Kolarik, Jakub

    2011-01-01

    Exergy analysis enables us to make connections among processes inside the human body and processes in a building. So far, only the effect of different combinations of air temperatures and mean radiant temperatures have been studied, with constant relative humidity in experimental conditions...... al. (1998). The effect of different levels of RH, Ta and effective clothing insulation on human body exergy balance chain, changes in human body exergy consumption rate (hbExCr) and predicted mean vote (PMV) index were analyzed. The results show that thermal comfort conditions do not always results...

  5. Morphological Analysis

    OpenAIRE

    Eryiğit, Gülşen

    2012-01-01

    In natural language processing, the spoken language is first of all transferred into a well-writen text from the media in which it is stored. In this stage, different procedures may be applied dependending on the different medias( i.e. speech records, social media, publications). Some of these are speech-to-text systems, tokenization and text normalization. After transferring the natural language into a well-written text, the principal stage of processing is the analysis of the words, which w...

  6. Vector analysis

    CERN Document Server

    Newell, Homer E

    2006-01-01

    When employed with skill and understanding, vector analysis can be a practical and powerful tool. This text develops the algebra and calculus of vectors in a manner useful to physicists and engineers. Numerous exercises (with answers) not only provide practice in manipulation but also help establish students' physical and geometric intuition in regard to vectors and vector concepts.Part I, the basic portion of the text, consists of a thorough treatment of vector algebra and the vector calculus. Part II presents the illustrative matter, demonstrating applications to kinematics, mechanics, and e

  7. Stereotactic Body Radiation Therapy for Spinal Metastases in the Postoperative Setting: A Secondary Analysis of Mature Phase 1-2 Trials

    Energy Technology Data Exchange (ETDEWEB)

    Tao, Randa; Bishop, Andrew J.; Brownlee, Zachary; Allen, Pamela K.; Settle, Stephen H. [Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas (United States); Chang, Eric L. [Department of Radiation Oncology, USC Norris Cancer Hospital, Keck School of Medicine of USC, Los Angeles, California (United States); Wang, Xin [Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas (United States); Amini, Behrang [Department of Neuroradiology, The University of Texas MD Anderson Cancer Center, Houston, Texas (United States); Tannir, Nizar M. [Department of Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas (United States); Tatsui, Claudio; Rhines, Laurence D. [Department of Neurosurgery, The University of Texas MD Anderson Cancer Center, Houston, Texas (United States); Brown, Paul D. [Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas (United States); Ghia, Amol J., E-mail: ajghia@mdanderson.org [Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas (United States)

    2016-08-01

    Purpose: To evaluate the outcomes in patients treated on prospective phase 1-2 protocols with postoperative stereotactic body radiation therapy (SBRT) and identify the associated prognostic variables. Methods and Materials: Sixty-six patients with 69 tumors were treated with SBRT on prospective phase 1-2 studies for spinal metastases between 2002 and 2010. All patients underwent SBRT after spine surgery, which included laminectomy, vertebrectomy, or a combination of these techniques. Renal cell carcinoma was the most common histology represented (n=35, 53%) followed by sarcomas (n=13, 20%). Thirty-one patients (47%) were treated with prior conventional radiation to the spine (median dose 30 Gy). Patients were followed up with spinal magnetic resonance imaging (MRI) studies to determine the treated tumor control (TC). Pain and other symptom data were collected prospectively to determine treatment response and toxicity. Results: The median follow-up time was 30 months (range, 1-145 months) for all patients and 75 months for living patients (range, 6-145 months). The actuarial 1-year rate of TC was 85%, adjacent vertebral body control was 85%, and overall survival (OS) was 74% (median 29 months). On multivariate competing-risks analysis, sarcoma histology (subhazard ratio [SHR] = 2.38, 95% confidence interval [CI] 1.05-5.6, P=.04) and larger preoperative tumor volumes (SHR=1.01, 95% CI 1.0-1.01, P=.006) were significantly associated with worse TC. Karnofsky performance status was the only significant predictor for OS on multivariate analysis. There were no differences in TC between patients treated with different surgical techniques or different preoperative or postoperative Bilsky grades. There were no grade 3 or higher neurologic toxicities. Conclusion: This study represents a large series of prospective data available on patients treated with SBRT in the postoperative setting. The combination of surgery with SBRT can offer patients with metastatic disease

  8. The benefit of pacemaker therapy in patients with neurally mediated syncope and documented asystole: a meta-analysis of implantable loop recorder studies.

    Science.gov (United States)

    Brignole, Michele; Deharo, Jean Claude; Menozzi, Carlo; Moya, Angel; Sutton, Richard; Tomaino, Marco; Ungar, Andrea

    2017-12-15

    Although the efficacy of cardiac pacing in patients with neurally mediated syncope (NMS) and documented asystole is established, a more robust point estimate of the benefit, which is not possible with any individual study, is lacking. We undertook a meta-analysis of individual participant data from four studies that reported follow-up data on syncope recurrence with cardiac pacing in patients with NMS who had had an electrocardiographic (ECG) documentation of an asystolic event by means of implantable loop recorder (ILR). Of a total of 1046 patients, who had ILR implanted, 383 (36.6%) patients had an ECG documentation of a diagnostic event during mean follow-up of 13 ± 10 months. Of these, 201 (52%) patients, corresponding to 19.2% of the total ILRs, had an asystolic event of 12.8 ± 11.0 s duration documented and met the criteria for pacemaker therapy. Follow-up was available in 121 (60%) of those patients with asystolic events. Syncope recurred after pacing in 18 (14.9%) patients with an actuarial rate of 13% [95% confidence interval (CI) ±6] at 1 year, 21% (95%CI ±10) at 2 years, and 24% (95%CI ±11) at 3 years. On multivariable Cox regression analysis, positive tilt test response was the only significant predictor of syncope recurrence with a hazard ratio (95% CI) of 4.3 (1.4-13). On the contrary, type of asystolic event (sinus arrest or atrioventricular block), prodrome, cardiac abnormalities, number and duration of history of syncope, age, and gender were not predictors of recurrence of syncope. A long asystolic pause, suitable for pacemaker therapy, was found in one of five patients with ILR. After pacemaker implantation, most of these patients remained free of syncope recurrence for up to 3 years. The benefit of pacemaker was greater in patients with negative tilt test.

  9. Models of Economic Analysis

    Directory of Open Access Journals (Sweden)

    Adrian Ioana

    2013-07-01

    Full Text Available The article presents specific aspects of management and models for economic analysis. Thus, we present the main types of economic analysis: statistical analysis, dynamic analysis, static analysis, mathematical analysis, psychological analysis. Also we present the main object of the analysis: the technological activity analysis of a company, the analysis of the production costs, the economic activity analysis of a company, the analysis of equipment, the analysis of labor productivity, the analysis of the goods flow.Keywords: Economic analysis, Models, Adoption of innovation

  10. Understanding analysis

    CERN Document Server

    Abbott, Stephen

    2015-01-01

    This lively introductory text exposes the student to the rewards of a rigorous study of functions of a real variable. In each chapter, informal discussions of questions that give analysis its inherent fascination are followed by precise, but not overly formal, developments of the techniques needed to make sense of them. By focusing on the unifying themes of approximation and the resolution of paradoxes that arise in the transition from the finite to the infinite, the text turns what could be a daunting cascade of definitions and theorems into a coherent and engaging progression of ideas. Acutely aware of the need for rigor, the student is much better prepared to understand what constitutes a proper mathematical proof and how to write one. Fifteen years of classroom experience with the first edition of Understanding Analysis have solidified and refined the central narrative of the second edition. Roughly 150 new exercises join a selection of the best exercises from the first edition, and three more project-sty...

  11. Variational analysis

    CERN Document Server

    Rockafellar, R Tyrrell

    1998-01-01

    From its origins in the minimization of integral functionals, the notion of 'variations' has evolved greatly in connection with applications in optimization, equilibrium, and control. It refers not only to constrained movement away from a point, but also to modes of perturbation and approximation that are best describable by 'set convergence', variational convergence of functions and the like. This book develops a unified framework and, in finite dimension, provides a detailed exposition of variational geometry and subdifferential calculus in their current forms beyond classical and convex analysis. Also covered are set-convergence, set-valued mappings, epi-convergence, duality, maximal monotone mappings, second-order subderivatives, measurable selections and normal integrands. The changes in this 3rd printing mainly concern various typographical corrections, and reference omissions that came to light in the previous printings. Many of these reached the authors' notice through their own re-reading, that of th...

  12. Functional analysis

    CERN Document Server

    Kesavan, S

    2009-01-01

    The material presented in this book is suited for a first course in Functional Analysis which can be followed by Masters students. While covering all the standard material expected of such a course, efforts have been made to illustrate the use of various theorems via examples taken from differential equations and the calculus of variations, either through brief sections or through exercises. In fact, this book will be particularly useful for students who would like to pursue a research career in the applications of mathematics. The book includes a chapter on weak and weak topologies and their applications to the notions of reflexivity, separability and uniform convexity. The chapter on the Lebesgue spaces also presents the theory of one of the simplest classes of Sobolev spaces. The book includes a chapter on compact operators and the spectral theory for compact self-adjoint operators on a Hilbert space. Each chapter has large collection of exercises at the end. These illustrate the results of the text, show ...

  13. Matrix analysis

    CERN Document Server

    Bhatia, Rajendra

    1997-01-01

    A good part of matrix theory is functional analytic in spirit. This statement can be turned around. There are many problems in operator theory, where most of the complexities and subtleties are present in the finite-dimensional case. My purpose in writing this book is to present a systematic treatment of methods that are useful in the study of such problems. This book is intended for use as a text for upper division and gradu­ ate courses. Courses based on parts of the material have been given by me at the Indian Statistical Institute and at the University of Toronto (in collaboration with Chandler Davis). The book should also be useful as a reference for research workers in linear algebra, operator theory, mathe­ matical physics and numerical analysis. A possible subtitle of this book could be Matrix Inequalities. A reader who works through the book should expect to become proficient in the art of deriving such inequalities. Other authors have compared this art to that of cutting diamonds. One first has to...

  14. Uncertainty analysis

    Energy Technology Data Exchange (ETDEWEB)

    Thomas, R.E.

    1982-03-01

    An evaluation is made of the suitability of analytical and statistical sampling methods for making uncertainty analyses. The adjoint method is found to be well-suited for obtaining sensitivity coefficients for computer programs involving large numbers of equations and input parameters. For this purpose the Latin Hypercube Sampling method is found to be inferior to conventional experimental designs. The Latin hypercube method can be used to estimate output probability density functions, but requires supplementary rank transformations followed by stepwise regression to obtain uncertainty information on individual input parameters. A simple Cork and Bottle problem is used to illustrate the efficiency of the adjoint method relative to certain statistical sampling methods. For linear models of the form Ax=b it is shown that a complete adjoint sensitivity analysis can be made without formulating and solving the adjoint problem. This can be done either by using a special type of statistical sampling or by reformulating the primal problem and using suitable linear programming software.

  15. [Allergen analysis].

    Science.gov (United States)

    Röder, Martin; Weber, Wolfgang

    2016-07-01

    The fundamental requirement when testing for and ensuring compliance with legally required labelling regulations is the reliable analysis of food allergens. This can be carried out by means of either DNA (deoxyribonucleic acid) or protein detection. Protein detection has the advantage of directly detecting the allergenic component and can currently be carried out using immunological (enzyme-linked immunosorbent assay [ELISA])/lateral flow devices [LFD]) or mass spectrometry-based techniques. DNA detection is indirect, but allows the presence of food allergens to be validated through the use of another marker. Each method has its pros and cons, which have to be considered on a case-by-case basis. ELISA is quantitative, quick and easy to carry out and has high sensitivity. LFD testing is ideal for industrial applications, as the tests can be carried out on-site. Both antibody-based tests may have problems with processed foods and false positive results. Mass-spectrometric techniques show a lot of promise, but are currently still time-consuming and complex to carry out. They also run into problems with processed foods and their degree of sensitivity is matrix and parameter dependent. For these reasons, this technique is only occasionally used. Polymerase chain reaction (PCR) provides the highest specificity and, depending on the target sequence, a very good to good level of sensitivity. Despite the high stability of DNA, PCR is still subject to the influence of processing and matrix related factors. Due to natural variation and production-related changes in the structures relevant in the process of detection, all methods exhibit a relatively high level of uncertainty of measurement. At present, there is no method which provides the absolute correct quantification. However, by means of laboratory-based analyses it is possible to calibrate for the allergen in question and thus be able to make reliable measurements using methods that are already available.

  16. A critical analysis of the interpretation of biochemical failure in surgically treated patients using the American Society for Therapeutic Radiation and Oncology criteria.

    Science.gov (United States)

    Gretzer, Matthew B; Trock, Bruce J; Han, Misop; Walsh, Patrick C

    2002-10-01

    The use of prostate specific antigen (PSA) to indicate biochemical failure has become an accepted procedure to measure the effectiveness of therapy. Because long-term randomized studies comparing radiation modalities to radical prostatectomy are not available, use of biochemical recurrence as a surrogate measure of efficacy is increasing. Unfortunately, the definition of failure is not uniform among therapies. We evaluate how the American Society for Therapeutic Radiation and Oncology (ASTRO) criteria affect the interpretation of failure when applied to radical prostatectomy. We retrospectively reviewed data from 2,691 men who underwent anatomical radical prostatectomy for localized disease between 1985 and 2000. All patients had regular followup visits ranging from 6 months to 15 years (mean 6). No patients were treated with radiation or hormonal therapy preoperatively or postoperatively until clinical recurrence. Biochemical failure was defined as any measurable PSA 0.2 ng./ml. or greater. We evaluated how elements of the ASTRO criteria affected the failure rate when applied to this series. We looked at 1) backdating the failure date to the midpoint between nadir and first PSA greater than 0.2 ng./ml., 2) early censoring if only 1 or 2 increasing values were available and 3) defining failure after 3 consecutive PSA increases and backdating failure time (midpoint of nadir and first PSA increase). Using actuarial analysis of the data defining failure as the first PSA 0.2 ng./ml. or greater, biochemical freedom from failure at 5, 10 and 15 years was 85%, 77% and 68%, respectively. In contrast, when backdating was used in this series, almost all failures occurred early with rare late failures (freedom from failure 82%, 80% and 80% at 5, 10 and 15 years, respectively). The difference in failure became even more pronounced when ASTRO criteria were applied requiring 3 consecutive increases, and backdating failure to the midpoint between nadir and first PSA (freedom from

  17. [Analysis of state costs of the social security benefits provided to the insured presenting with lung cancer and pulmonary diseases caused by external factors].

    Science.gov (United States)

    Kuklińska-Janiak, Dorota

    2013-12-01

    Lung cancer and pneumoconioses constitute two serious problems of contemporary medicine and a public health system. To analyze the costs associated with social security benefits provided to the insured presenting with lung cancer and pulmonary diseases (including pneumoconioses) caused by external factors. The analysis was based on the data obtained from the Department of Statistics and Actuarial Forecasts of the Social Insurance Institution (SlI) in Warsaw. Structural diversity of the costs of the separate benefits available within the national health insurance system has been considered. Based on the data available in Poland costs associated with the incidence of lung cancer and pneumoconiosis were assessed taking into account sex and age of the insured as well as the administrative division of Poland. Additionally, mortality rates from the selected pulmonary diseases were analyzed. Costs of the pensions paid to the insured presenting with lung cancer amount to 81.11% of the total social security costs associated with these diseases, while the sick leave money paid to the insured lung cancer patients equal to 15.5% of the total costs. In the insured women, costs of the pensions paid due to occupational pulmonary diseases (predominantly pneumoconioses) constitute 41.1% and in the insured men--11.5% of the total 'occupational' pensions. Although the maximal incidence of lung cancer occurs in both men and women above their retirement ages the costs of the work incapacity pensions paid to lung cancer patients still exceed 81% of the total social security costs associated with these diseases. In the insured women, the cost of pensions paid due to occupational pulmonary diseases, most of which are pneumoconioses, ranks first among the costs of 'occupational' pensions received by these subjects, while in the insured men the respective cost ranks third (after injuries plus intoxications and cardiovascular diseases) among their 'occupational' pensions. Moreover, the

  18. Theoretical numerical analysis a functional analysis framework

    CERN Document Server

    Atkinson, Kendall

    2005-01-01

    This textbook prepares graduate students for research in numerical analysis/computational mathematics by giving to them a mathematical framework embedded in functional analysis and focused on numerical analysis. This helps the student to move rapidly into a research program. The text covers basic results of functional analysis, approximation theory, Fourier analysis and wavelets, iteration methods for nonlinear equations, finite difference methods, Sobolev spaces and weak formulations of boundary value problems, finite element methods, elliptic variational inequalities and their numerical solu

  19. Information security risk analysis

    CERN Document Server

    Peltier, Thomas R

    2001-01-01

    Effective Risk AnalysisQualitative Risk AnalysisValue AnalysisOther Qualitative MethodsFacilitated Risk Analysis Process (FRAP)Other Uses of Qualitative Risk AnalysisCase StudyAppendix A: QuestionnaireAppendix B: Facilitated Risk Analysis Process FormsAppendix C: Business Impact Analysis FormsAppendix D: Sample of ReportAppendix E: Threat DefinitionsAppendix F: Other Risk Analysis OpinionsIndex

  20. Journal Afrika Statistika ISSN 0852-0305 Mod`eles de Risque et ...

    African Journals Online (AJOL)

    Abstract. One of the problems which appear during comprehension and working of the complex systems is the analysis of the stability of their functioning. These last years, the specialists became aware of the importance of the stability analysis in actuarial sciences and in financial mathematics. In this work, we are interested ...

  1. Modeles de Risque et Files d'Attente: La methode de stabilite forte ...

    African Journals Online (AJOL)

    Abstract. One of the problems which appear during comprehension and working of the complex systems is the analysis of the stability of their functioning. These last years, the specialists became aware of the importance of the stability analysis in actuarial sciences and in financial mathematics. In this work, we are interested ...

  2. A randomized double-blind phase III study of nimorazole as a hypoxic radiosensitizer of primary radiotherapy in supraglottic larynx and pharynx carcinoma. Results of the Danish Head and Neck Cancer Study (DAHANCA) Protocol 5-85

    DEFF Research Database (Denmark)

    Overgaard, J.; Hansen, H.S.; Overgaard, M.

    1998-01-01

    fractions per week). The median observation time was 112 months. RESULTS: Univariate analysis showed that the outcome (5-year actuarial loco-regional tumor control) was significantly related to T-classification (T1-T2 48% versus T3-T4 36%, P = 0.0008), neck-nodes (N- 53% versus N+ 33%), pre...... for the end-points of final loco-regional control (including surgical salvage) and cancer-related deaths (52 versus 41%, P = 0.002). This trend was also found in the overall survival but to a lesser, non-significant extent (26 versus 16%, 10-year actuarial values, P = 0.32). Cox multivariate regression...

  3. Pyrotechnic Shock Analysis Using Statistical Energy Analysis

    Science.gov (United States)

    2015-10-23

    29th Aerospace Testing Seminar, October 2015 Pyrotechnic Shock Analysis Using Statistical Energy Analysis James Ho-Jin Hwang Engineering...maximum structural response due to a pyrotechnic shock input using Statistical Energy Analysis (SEA). It had been previously understood that since the...pyrotechnic shock is not a steady state event, traditional SEA method may not applicable. A new analysis methodology effectively utilizes the

  4. Permanent interstitial low-dose-rate brachytherapy for patients with low risk prostate cancer. An interim analysis of 312 cases

    Energy Technology Data Exchange (ETDEWEB)

    Badakhshi, Harun; Graf, Reinhold; Budach, Volker; Wust, Peter [University Hospital Berlin, Department for Radiation Oncology of Charite School of Medicine, Berlin (Germany)

    2015-04-01

    The biochemical relapse-free survival (bRFS) rate after treatment with permanent iodine-125 seed implantation (PSI) or combined seeds and external beam radiotherapy (COMB) for clinical stage T1-T2 localized prostate cancer is a clinically relevant endpoint. The goal of this work was to evaluate the influence of relevant patient- and treatment-related factors. The study population comprised 312 consecutive patients treated with permanent seed implantation. All patients were evaluable for analysis of overall survival (OS) and disease-specific survival (DSS), 230 for bRFS, of which 192 were in the PSI group and 38 in the COMB group. The prescribed minimum peripheral dose was 145 Gy for PSI, for COMB 110 Gy implant and external beam radiotherapy of 45 Gy. The median follow-up time was 33 months (range 8-66 months). bRFS was defined as a serum prostate-specific antigen (PSA) level ≤ 0.2 ng/ml at last follow-up. Overall, the actuarial bRFS at 50 months was 88.4 %. The 50-month bRFS rate for PSI and COMB was 90.9 %, and 77.2 %, respectively. In the univariate analysis, age in the categories ≤ 63 and > 63 years (p < 0.00), PSA nadir (≤ 0.5 ng/ml and > 0.5 ng/ml) and PSA bounce (yes/no) were the significant predicting factors for bRFS. None of the other patient and treatment variables (treatment modality, stage, PSA, Gleason score, risk group, number of risk factors, D90 and various other dose parameters) were found to be a statistically significant predictor of 50-month bRFS. The biochemical failure rates were low in this study. As a proof of principle, our large monocenteric analysis shows that low-dose-rate brachytherapy is an effective and safe procedure for patients with early stage prostate cancer. (orig.) [German] Das biochemisch rezidivfreie Ueberleben (bRFS) nach der Brachytherapie mit permanenter Iod-125-Seed-Implantation (PSI) oder in Kombination mit externer Radiotherapie (COMB) ist beim Patienten mit fruehem Prostatakarzinom (T1/T2) ein relevanter

  5. EL FACTOR DE SOSTENIBILIDAD: DISEÑOS ALTERNATIVOS Y VALORACIÓN FINANCIERO - ACTUARIAL DE SUS EFECTOS SOBRE LOS PARÁMETROS DEL SISTEMA

    OpenAIRE

    Robert Meneu Gaya; José Enrique Devesa Carpio; Mar Devesa Carpio; Amparo Nagore García; Inmaculada Domínguez Fabián; Borja Encinas Goenechea

    2013-01-01

    La Ley 27/2011, que reforma el sistema de pensiones español, introduce el factor de sostenibilidad, un instrumento que ajusta automáticamente los parámetros del sistema a la evolución de la esperanza de vida a partir del año 2027 y con revisiones cada 5 años, aunque la reciente Ley Orgánica 2/2012 de Estabilidad Presupuestaria y Sostenibilidad Financiera abre la posibilidad de que se anticipe su entrada en vigor si se proyecta un déficit a largo plazo en el sistema de pensiones. Dado que el d...

  6. EL FACTOR DE SOSTENIBILIDAD: DISEÑOS ALTERNATIVOS Y VALORACIÓN FINANCIERO - ACTUARIAL DE SUS EFECTOS SOBRE LOS PARÁMETROS DEL SISTEMA

    Directory of Open Access Journals (Sweden)

    Robert Meneu Gaya

    2013-05-01

    Full Text Available La Ley 27/2011, que reforma el sistema de pensiones español, introduce el factor de sostenibilidad, un instrumento que ajusta automáticamente los parámetros del sistema a la evolución de la esperanza de vida a partir del año 2027 y con revisiones cada 5 años, aunque la reciente Ley Orgánica 2/2012 de Estabilidad Presupuestaria y Sostenibilidad Financiera abre la posibilidad de que se anticipe su entrada en vigor si se proyecta un déficit a largo plazo en el sistema de pensiones. Dado que el diseño concreto del factor de sostenibilidad está pendiente, resulta relevante analizar cómo otros países de la Unión Europea han incorporado instrumentos similares en sus sistemas de pensiones y, desde esas experiencias, ofrecer diseños alternativos para el caso español, valorando los efectos de cada uno de ellos sobre los parámetros del sistema, utilizando para ello las recientes proyecciones de esperanza de vida del Instituto Nacional de Estadística. La Ley 27/2011, que reforma el sistema de pensiones español, introduce el factor de sostenibilidad, un instrumento que ajusta automáticamente los parámetros del sistema a la evolución de la esperanza de vida a partir del año 2027 y con revisiones cada 5 años, aunque la reciente Ley Orgánica 2/2012 de Estabilidad Presupuestaria y Sostenibilidad Financiera abre la posibilidad de que se anticipe su entrada en vigor si se proyecta un déficit a largo plazo en el sistema de pensiones. Dado que el diseño concreto del factor de sostenibilidad está pendiente, resulta relevante analizar cómo otros países de la Unión Europea han incorporado instrumentos similares en sus sistemas de pensiones y, desde esas experiencias, ofrecer diseños alternativos para el caso español, valorando los efectos de cada uno de ellos sobre los parámetros del sistema, utilizando para ello las recientes proyecciones de esperanza de vida del Instituto Nacional de Estadística.

  7. Strengths and limitations of actuarial prediction of criminal reoffence in a German prison sample: a comparative study of LSI-R, HCR-20 and PCL-R.

    Science.gov (United States)

    Dahle, Klaus-Peter

    2006-01-01

    Unlike many other countries, for many years, Germany disregarded structured instruments for assessing the risk of criminal reoffence. However, this negative attitude now seems to be gradually changing. An increasing number of contributions regarding structured instruments have been published in the German literature in the last years, and some instruments have already found their way into practice. However, studies that systematically examine the applicability of the mostly Anglo-American instruments to German criminals are still lacking. Therefore, the major objective of the current study was to test some internationally established procedures in a larger unselected sample from the German penal system. The following were included in the study: the Level of Service Inventory - Revised (LSI-R), the HCR-20 Scheme, and the Psychopathy Checklist - Revised (PCL-R). On the whole, the instruments proved to be applicable to German criminals with only a few adaptations to the German situation, and they achieved a predictive accuracy comparable to the values reported internationally. However, there were only minor differences in the predictive performance between the measures. Moreover, some basic limitations became apparent. Firstly, we found quite high percentages of criminals with medium scores and a correspondingly ambiguous prognosis. Furthermore, the predictive accuracy seemed to be dependent on demographic, criminological and psychopathological characteristics of the offenders. Finally, the instruments appeared to only partially utilize the empirical store of knowledge available regarding factors influencing the recidivism of criminals, since even a simple predictive model that only added a few further aspects besides the tested instruments (e. g. treatment yes or no) achieved systematically better predictions than the instruments alone. Altogether, the tested measures turned out to be useful instruments for risk assessments and may be conducive for a more systemized practice. However, due to the limitations inherent, they should be seen as a complement to a careful and clinically informed appraisal and not a substitute.

  8. Mortality in neurofibromatosis 1: in North West England: an assessment of actuarial survival in a region of the UK since 1989.

    Science.gov (United States)

    Evans, D Gareth R; O'Hara, Catherine; Wilding, Anna; Ingham, Sarah L; Howard, Elizabeth; Dawson, John; Moran, Anthony; Scott-Kitching, Vilka; Holt, Felicity; Huson, Susan M

    2011-11-01

    Neurofibromatosis 1 (NF1) is a comparatively common autosomal dominant disorder. However, relatively few studies have assessed lifetime risk; and information about the effect of NF1 on mortality remains uncertain. NF1 patients were identified using The North West regional family Genetic Register, which covers the 4.1 million people living in North West England, including the regions of Greater Manchester, Cheshire and Cumbria. Data relating to tumours and malignancies were obtained from The North West Cancer Intelligence Service. Death data for the general North West population were obtained from the Office of National Statistics. We identified 1186 individuals with NF1, of whom 1023 lived within the strict regional boundaries (constituting a region of North West England bound by The Pennines to the east and Irish Sea to the west, but excluding the conurbation of Liverpool (Merseyside) and the Wirral peninsula) and 131 had died. MPNST and glioma were found to be the two most common causes of reduced life expectancy among NF1 patients. In Kaplan-Meier analyses the median survival for NF1 patients was shown to be 71.5 years, with women living ∼7.4 years longer than men. On average both men and women lived ∼8 years less than their counterparts in the general population. Reduction in life expectancy for NF1 patients was found to be much lower (8 years) than the previously estimated 15-year decrease. Limitations relating to the underreporting of NF1 on death certificates were once again highlighted and should be considered in future investigations.

  9. Shape analysis in medical image analysis

    CERN Document Server

    Tavares, João

    2014-01-01

    This book contains thirteen contributions from invited experts of international recognition addressing important issues in shape analysis in medical image analysis, including techniques for image segmentation, registration, modelling and classification, and applications in biology, as well as in cardiac, brain, spine, chest, lung and clinical practice. This volume treats topics such as, anatomic and functional shape representation and matching; shape-based medical image segmentation; shape registration; statistical shape analysis; shape deformation; shape-based abnormity detection; shape tracking and longitudinal shape analysis; machine learning for shape modeling and analysis; shape-based computer-aided-diagnosis; shape-based medical navigation; benchmark and validation of shape representation, analysis and modeling algorithms. This work will be of interest to researchers, students, and manufacturers in the fields of artificial intelligence, bioengineering, biomechanics, computational mechanics, computationa...

  10. How healthy is South Africa's tnedical schemes industry?

    African Journals Online (AJOL)

    Abstract An analysis of the membership demographics, the financial health and especially the sustainability of the South African medical schemes industry is presented. From the financial and in particular the actuarial analyses it is obvious that the current system is unsustainable, and if a private health care sector is to ...

  11. How healthy is South Africa's tnedical schemes industry?

    African Journals Online (AJOL)

    H. FOURIE, G. L. MARX. Abstract An analysis of the membership demographics, the financial health and especially the sustainability of the South African medical schemes industry is presented. From the financial and in particular the actuarial analyses it is obvious that the current system is unsustainable, and if a private ...

  12. Experimental modal analysis

    DEFF Research Database (Denmark)

    Ibsen, Lars Bo; Liingaard, Morten

    This technical report concerns the basic theory and principles for experimental modal analysis. The sections within the report are: Output-only modal analysis software (section 1.1), general digital analysis (section 1.2), basics of structural dynamics and modal analysis (section 1.3) and system...

  13. Foundations of factor analysis

    CERN Document Server

    Mulaik, Stanley A

    2009-01-01

    Introduction Factor Analysis and Structural Theories Brief History of Factor Analysis as a Linear Model Example of Factor AnalysisMathematical Foundations for Factor Analysis Introduction Scalar AlgebraVectorsMatrix AlgebraDeterminants Treatment of Variables as Vectors Maxima and Minima of FunctionsComposite Variables and Linear Transformations Introduction Composite Variables Unweighted Composite VariablesDifferentially Weighted Composites Matrix EquationsMulti

  14. DTI analysis methods : Voxel-based analysis

    NARCIS (Netherlands)

    Van Hecke, Wim; Leemans, Alexander; Emsell, Louise

    2016-01-01

    Voxel-based analysis (VBA) of diffusion tensor imaging (DTI) data permits the investigation of voxel-wise differences or changes in DTI metrics in every voxel of a brain dataset. It is applied primarily in the exploratory analysis of hypothesized group-level alterations in DTI parameters, as it does

  15. Citation Analysis and Discourse Analysis Revisited

    Science.gov (United States)

    White, Howard D.

    2004-01-01

    John Swales's 1986 article "Citation analysis and discourse analysis" was written by a discourse analyst to introduce citation research from other fields, mainly sociology of science, to his own discipline. Here, I introduce applied linguists and discourse analysts to citation studies from information science, a complementary tradition not…

  16. Analysis of Precision of Activation Analysis Method

    DEFF Research Database (Denmark)

    Heydorn, Kaj; Nørgaard, K.

    1973-01-01

    The precision of an activation-analysis method prescribes the estimation of the precision of a single analytical result. The adequacy of these estimates to account for the observed variation between duplicate results from the analysis of different samples and materials, is tested by the statistic T...

  17. Systematic review of actual 10-year survival following resection for hepatocellular carcinoma.

    Science.gov (United States)

    Gluer, Annelise M; Cocco, Nicholas; Laurence, Jerome M; Johnston, Emma S; Hollands, Michael J; Pleass, Henry C C; Richardson, Arthur J; Lam, Vincent W T

    2012-05-01

    Hepatic resection is a potentially curative therapy for hepatocellular carcinoma (HCC), but recurrence of disease is very common. Few studies have reported 10-year actual survival rates following hepatic resection; instead, most have used actuarial measures based on the Kaplan-Meier method. This systematic review aims to document 10-year actual survival rates and to identify factors significant in determining prognosis. A comprehensive search was undertaken of MEDLINE and EMBASE. Only studies reporting the absolute number of patients alive at 10 years after first resection for HCC were included; these figures were used to calculate the actual 10-year survival rate. A qualitative review and analysis of the prognostic factors identified in the included studies were performed. Fourteen studies, all of which were retrospective case series, including data on 4197 patients with HCC were analysed. Ten years following resection, 303 of these patients were alive. The 10-year actual survival rate was 7.2%, whereas the actuarial survival quoted from the same studies was 26.8%. Positive prognostic factors included better hepatic function, a wider surgical margin and the absence of satellite lesions. The actual long-term survival rate after resection of HCC is significantly inferior to reported actuarial survival rates. The Kaplan-Meier method of actuarial survival analysis tends to overestimate survival outcomes as a result of censorship of data and subgroup analysis. © 2012 International Hepato-Pancreato-Biliary Association.

  18. Cluster analysis for applications

    CERN Document Server

    Anderberg, Michael R

    1973-01-01

    Cluster Analysis for Applications deals with methods and various applications of cluster analysis. Topics covered range from variables and scales to measures of association among variables and among data units. Conceptual problems in cluster analysis are discussed, along with hierarchical and non-hierarchical clustering methods. The necessary elements of data analysis, statistics, cluster analysis, and computer implementation are integrated vertically to cover the complete path from raw data to a finished analysis.Comprised of 10 chapters, this book begins with an introduction to the subject o

  19. Circuit analysis for dummies

    CERN Document Server

    Santiago, John

    2013-01-01

    Circuits overloaded from electric circuit analysis? Many universities require that students pursuing a degree in electrical or computer engineering take an Electric Circuit Analysis course to determine who will ""make the cut"" and continue in the degree program. Circuit Analysis For Dummies will help these students to better understand electric circuit analysis by presenting the information in an effective and straightforward manner. Circuit Analysis For Dummies gives you clear-cut information about the topics covered in an electric circuit analysis courses to help

  20. Authors: S Fick and P van der Merwe

    African Journals Online (AJOL)

    Sarah Fick

    2015-03-20

    . Actuarial. Consultant, Munro Forensic Actuaries, South Africa. .... Actuaries use this report to make assumptions regarding the claimant's .... In reality, studies have shown that trees do, in fact, grow faster the bigger they get.

  1. Introductory numerical analysis

    CERN Document Server

    Pettofrezzo, Anthony J

    2006-01-01

    Written for undergraduates who require a familiarity with the principles behind numerical analysis, this classical treatment encompasses finite differences, least squares theory, and harmonic analysis. Over 70 examples and 280 exercises. 1967 edition.

  2. Mathematical and statistical analysis

    Science.gov (United States)

    Houston, A. Glen

    1988-01-01

    The goal of the mathematical and statistical analysis component of RICIS is to research, develop, and evaluate mathematical and statistical techniques for aerospace technology applications. Specific research areas of interest include modeling, simulation, experiment design, reliability assessment, and numerical analysis.

  3. Buildings Sector Analysis

    Energy Technology Data Exchange (ETDEWEB)

    Hostick, Donna J.; Nicholls, Andrew K.; McDonald, Sean C.; Hollomon, Jonathan B.

    2005-08-01

    A joint NREL, ORNL, and PNNL team conducted market analysis to help inform DOE/EERE's Weatherization and Intergovernmental Program planning and management decisions. This chapter presents the results of the market analysis for the Buildings sector.

  4. Synovial fluid analysis

    Science.gov (United States)

    Joint fluid analysis; Joint fluid aspiration ... El-Gabalawy HS. Synovial fluid analysis, synovial biopsy, and synovial pathology. In: Firestein GS, Budd RC, Gabriel SE, McInnes IB, O'Dell JR, eds. Kelly's Textbook of ...

  5. Neutron Activation Analysis

    Energy Technology Data Exchange (ETDEWEB)

    Corliss, William R.

    1968-01-01

    In activation analysis, a sample of an unknown material is first irradiated (activated) with nuclear particles. In practice these nuclear particles are almost always neutrons. The success of activation analysis depends upon nuclear reactions which are completely independent of an atom's chemical associations. The value of activation analysis as a research tool was recognized almost immediately upon the discovery of artificial radioactivity. This book discusses activation analysis experiments, applications and technical considerations.

  6. Regression analysis by example

    CERN Document Server

    Chatterjee, Samprit

    2012-01-01

    Praise for the Fourth Edition: ""This book is . . . an excellent source of examples for regression analysis. It has been and still is readily readable and understandable."" -Journal of the American Statistical Association Regression analysis is a conceptually simple method for investigating relationships among variables. Carrying out a successful application of regression analysis, however, requires a balance of theoretical results, empirical rules, and subjective judgment. Regression Analysis by Example, Fifth Edition has been expanded

  7. Slice hyperholomorphic Schur analysis

    CERN Document Server

    Alpay, Daniel; Sabadini, Irene

    2016-01-01

    This book defines and examines the counterpart of Schur functions and Schur analysis in the slice hyperholomorphic setting. It is organized into three parts: the first introduces readers to classical Schur analysis, while the second offers background material on quaternions, slice hyperholomorphic functions, and quaternionic functional analysis. The third part represents the core of the book and explores quaternionic Schur analysis and its various applications. The book includes previously unpublished results and provides the basis for new directions of research.

  8. Computational movement analysis

    CERN Document Server

    Laube, Patrick

    2014-01-01

    This SpringerBrief discusses the characteristics of spatiotemporal movement data, including uncertainty and scale. It investigates three core aspects of Computational Movement Analysis: Conceptual modeling of movement and movement spaces, spatiotemporal analysis methods aiming at a better understanding of movement processes (with a focus on data mining for movement patterns), and using decentralized spatial computing methods in movement analysis. The author presents Computational Movement Analysis as an interdisciplinary umbrella for analyzing movement processes with methods from a range of fi

  9. Applied longitudinal analysis

    CERN Document Server

    Fitzmaurice, Garrett M; Ware, James H

    2012-01-01

    Praise for the First Edition "". . . [this book] should be on the shelf of everyone interested in . . . longitudinal data analysis.""-Journal of the American Statistical Association   Features newly developed topics and applications of the analysis of longitudinal data Applied Longitudinal Analysis, Second Edition presents modern methods for analyzing data from longitudinal studies and now features the latest state-of-the-art techniques. The book emphasizes practical, rather than theoretical, aspects of methods for the analysis of diverse types of lo

  10. Discourse analysis and Foucault's

    Directory of Open Access Journals (Sweden)

    Jansen I.

    2008-01-01

    Full Text Available Discourse analysis is a method with up to now was less recognized in nursing science, althoughmore recently nursing scientists are discovering it for their purposes. However, several authors have criticized thatdiscourse analysis is often misinterpreted because of a lack of understanding of its theoretical backgrounds. In thisarticle, I reconstruct Foucault’s writings in his “Archaeology of Knowledge” to provide a theoretical base for futurearchaeological discourse analysis, which can be categorized as a socio-linguistic discourse analysis.

  11. Modern Regression Discontinuity Analysis

    Science.gov (United States)

    Bloom, Howard S.

    2012-01-01

    This article provides a detailed discussion of the theory and practice of modern regression discontinuity (RD) analysis for estimating the effects of interventions or treatments. Part 1 briefly chronicles the history of RD analysis and summarizes its past applications. Part 2 explains how in theory an RD analysis can identify an average effect of…

  12. Critical Classroom Discourse Analysis.

    Science.gov (United States)

    Kumaravadivelu, B.

    1999-01-01

    Conceptualizes a framework for conducting critical classroom-discourse analysis. Critiques the scope and method of current models of classroom-interaction analysis and classroom-discourse analysis and advocates using poststructuralist and postcolonialist understandings of discourse to develop a critical framework for understanding what actually…

  13. Data analysis for chemistry

    CERN Document Server

    Hibbert, DBrynn

    2005-01-01

    Based on D Brynn Hibbert''s lectures on data analysis to undergraduates and graduate students, this book covers topics including measurements, means and confidence intervals, hypothesis testing, analysis of variance, and calibration models. It is meant as an entry level book targeted at learning and teaching undergraduate data analysis.

  14. Practical data analysis

    CERN Document Server

    Cuesta, Hector

    2013-01-01

    Each chapter of the book quickly introduces a key 'theme' of Data Analysis, before immersing you in the practical aspects of each theme. You'll learn quickly how to perform all aspects of Data Analysis.Practical Data Analysis is a book ideal for home and small business users who want to slice & dice the data they have on hand with minimum hassle.

  15. Analysis of Relativity Premium in Bonus-Malus System Based on Optimal Linear Method

    Directory of Open Access Journals (Sweden)

    Yu Chen

    2014-01-01

    Full Text Available A bonus-malus system plays a very important role in actuarial mathematics through determining its relativity premium, which is extensively used in automobile insurance. There are many ways including Bayesian estimator and ordinary linear estimator to calculate the relativity premium. There is no doubt that Bayesian estimator is the most accurate estimator; however, it is undesirable for commercial purposes for its rather irregular pattern. This paper aims to introduce an optimal linear estimator for relativity premium, which has a simple pattern and is obtained under the quadratic loss function such that the result is close to Bayesian method. The Loimaranta efficiency of such an optimal linear estimator has been studied and compared with the two methods mentioned above.

  16. Strategic Analysis Overview

    Science.gov (United States)

    Cirillo, William M.; Earle, Kevin D.; Goodliff, Kandyce E.; Reeves, J. D.; Stromgren, Chel; Andraschko, Mark R.; Merrill, R. Gabe

    2008-01-01

    NASA s Constellation Program employs a strategic analysis methodology in providing an integrated analysis capability of Lunar exploration scenarios and to support strategic decision-making regarding those scenarios. The strategic analysis methodology integrates the assessment of the major contributors to strategic objective satisfaction performance, affordability, and risk and captures the linkages and feedbacks between all three components. Strategic analysis supports strategic decision making by senior management through comparable analysis of alternative strategies, provision of a consistent set of high level value metrics, and the enabling of cost-benefit analysis. The tools developed to implement the strategic analysis methodology are not element design and sizing tools. Rather, these models evaluate strategic performance using predefined elements, imported into a library from expert-driven design/sizing tools or expert analysis. Specific components of the strategic analysis tool set include scenario definition, requirements generation, mission manifesting, scenario lifecycle costing, crew time analysis, objective satisfaction benefit, risk analysis, and probabilistic evaluation. Results from all components of strategic analysis are evaluated a set of pre-defined figures of merit (FOMs). These FOMs capture the high-level strategic characteristics of all scenarios and facilitate direct comparison of options. The strategic analysis methodology that is described in this paper has previously been applied to the Space Shuttle and International Space Station Programs and is now being used to support the development of the baseline Constellation Program lunar architecture. This paper will present an overview of the strategic analysis methodology and will present sample results from the application of the strategic analysis methodology to the Constellation Program lunar architecture.

  17. Mathematical analysis fundamentals

    CERN Document Server

    Bashirov, Agamirza

    2014-01-01

    The author's goal is a rigorous presentation of the fundamentals of analysis, starting from elementary level and moving to the advanced coursework. The curriculum of all mathematics (pure or applied) and physics programs include a compulsory course in mathematical analysis. This book will serve as can serve a main textbook of such (one semester) courses. The book can also serve as additional reading for such courses as real analysis, functional analysis, harmonic analysis etc. For non-math major students requiring math beyond calculus, this is a more friendly approach than many math-centric o

  18. Foundations of mathematical analysis

    CERN Document Server

    Johnsonbaugh, Richard

    2010-01-01

    This classroom-tested volume offers a definitive look at modern analysis, with views of applications to statistics, numerical analysis, Fourier series, differential equations, mathematical analysis, and functional analysis. Upper-level undergraduate students with a background in calculus will benefit from its teachings, along with beginning graduate students seeking a firm grounding in modern analysis. A self-contained text, it presents the necessary background on the limit concept, and the first seven chapters could constitute a one-semester introduction to limits. Subsequent chapters discuss

  19. Analysis in usability evaluations

    DEFF Research Database (Denmark)

    Følstad, Asbjørn; Lai-Chong Law, Effie; Hornbæk, Kasper

    2010-01-01

    While the planning and implementation of usability evaluations are well described in the literature, the analysis of the evaluation data is not. We present interviews with 11 usability professionals on how they conduct analysis, describing the resources, collaboration, creation of recommendations......, and prioritization involved. The interviews indicate a lack of structure in the analysis process and suggest activities, such as generating recommendations, that are unsupported by existing methods. We discuss how to better support analysis, and propose four themes for future research on analysis in usability...

  20. http Log Analysis

    DEFF Research Database (Denmark)

    Bøving, Kristian Billeskov; Simonsen, Jesper

    2004-01-01

    This article documents how log analysis can inform qualitative studies concerning the usage of web-based information systems (WIS). No prior research has used http log files as data to study collaboration between multiple users in organisational settings. We investigate how to perform http log...... analysis; what http log analysis says about the nature of collaborative WIS use; and how results from http log analysis may support other data collection methods such as surveys, interviews, and observation. The analysis of log files initially lends itself to research designs, which serve to test...... hypotheses using a quantitative methodology. We show that http log analysis can also be valuable in qualitative research such as case studies. The results from http log analysis can be triangulated with other data sources and for example serve as a means of supporting the interpretation of interview data...

  1. Multivariate analysis with LISREL

    CERN Document Server

    Jöreskog, Karl G; Y Wallentin, Fan

    2016-01-01

    This book traces the theory and methodology of multivariate statistical analysis and shows how it can be conducted in practice using the LISREL computer program. It presents not only the typical uses of LISREL, such as confirmatory factor analysis and structural equation models, but also several other multivariate analysis topics, including regression (univariate, multivariate, censored, logistic, and probit), generalized linear models, multilevel analysis, and principal component analysis. It provides numerous examples from several disciplines and discusses and interprets the results, illustrated with sections of output from the LISREL program, in the context of the example. The book is intended for masters and PhD students and researchers in the social, behavioral, economic and many other sciences who require a basic understanding of multivariate statistical theory and methods for their analysis of multivariate data. It can also be used as a textbook on various topics of multivariate statistical analysis.

  2. The ATLAS Analysis Model

    CERN Multimedia

    Amir Farbin

    The ATLAS Analysis Model is a continually developing vision of how to reconcile physics analysis requirements with the ATLAS offline software and computing model constraints. In the past year this vision has influenced the evolution of the ATLAS Event Data Model, the Athena software framework, and physics analysis tools. These developments, along with the October Analysis Model Workshop and the planning for CSC analyses have led to a rapid refinement of the ATLAS Analysis Model in the past few months. This article introduces some of the relevant issues and presents the current vision of the future ATLAS Analysis Model. Event Data Model The ATLAS Event Data Model (EDM) consists of several levels of details, each targeted for a specific set of tasks. For example the Event Summary Data (ESD) stores calorimeter cells and tracking system hits thereby permitting many calibration and alignment tasks, but will be only accessible at particular computing sites with potentially large latency. In contrast, the Analysis...

  3. NASA trend analysis procedures

    Science.gov (United States)

    1993-01-01

    This publication is primarily intended for use by NASA personnel engaged in managing or implementing trend analysis programs. 'Trend analysis' refers to the observation of current activity in the context of the past in order to infer the expected level of future activity. NASA trend analysis was divided into 5 categories: problem, performance, supportability, programmatic, and reliability. Problem trend analysis uncovers multiple occurrences of historical hardware or software problems or failures in order to focus future corrective action. Performance trend analysis observes changing levels of real-time or historical flight vehicle performance parameters such as temperatures, pressures, and flow rates as compared to specification or 'safe' limits. Supportability trend analysis assesses the adequacy of the spaceflight logistics system; example indicators are repair-turn-around time and parts stockage levels. Programmatic trend analysis uses quantitative indicators to evaluate the 'health' of NASA programs of all types. Finally, reliability trend analysis attempts to evaluate the growth of system reliability based on a decreasing rate of occurrence of hardware problems over time. Procedures for conducting all five types of trend analysis are provided in this publication, prepared through the joint efforts of the NASA Trend Analysis Working Group.

  4. Fundamentals of functional analysis

    CERN Document Server

    Farenick, Douglas

    2016-01-01

    This book provides a unique path for graduate or advanced undergraduate students to begin studying the rich subject of functional analysis with fewer prerequisites than is normally required. The text begins with a self-contained and highly efficient introduction to topology and measure theory, which focuses on the essential notions required for the study of functional analysis, and which are often buried within full-length overviews of the subjects. This is particularly useful for those in applied mathematics, engineering, or physics who need to have a firm grasp of functional analysis, but not necessarily some of the more abstruse aspects of topology and measure theory normally encountered. The reader is assumed to only have knowledge of basic real analysis, complex analysis, and algebra. The latter part of the text provides an outstanding treatment of Banach space theory and operator theory, covering topics not usually found together in other books on functional analysis. Written in a clear, concise manner,...

  5. Sparse Exploratory Factor Analysis.

    Science.gov (United States)

    Trendafilov, Nickolay T; Fontanella, Sara; Adachi, Kohei

    2017-07-13

    Sparse principal component analysis is a very active research area in the last decade. It produces component loadings with many zero entries which facilitates their interpretation and helps avoid redundant variables. The classic factor analysis is another popular dimension reduction technique which shares similar interpretation problems and could greatly benefit from sparse solutions. Unfortunately, there are very few works considering sparse versions of the classic factor analysis. Our goal is to contribute further in this direction. We revisit the most popular procedures for exploratory factor analysis, maximum likelihood and least squares. Sparse factor loadings are obtained for them by, first, adopting a special reparameterization and, second, by introducing additional [Formula: see text]-norm penalties into the standard factor analysis problems. As a result, we propose sparse versions of the major factor analysis procedures. We illustrate the developed algorithms on well-known psychometric problems. Our sparse solutions are critically compared to ones obtained by other existing methods.

  6. CREATIVE ANALYSIS, THE GRADED EXERCISES IN ANALYSIS.

    Science.gov (United States)

    SAMSON, RICHARD W.; UPTON, ALBERT

    WRITTEN TO IMPLEMENT THE PRINCIPLES SET FORTH IN "DESIGN FOR THINKING" (SEE TE 000 457.), THIS BOOK DEALS WITH WORDS AS TOOLS OF THOUGHT AND WITH THE PROBLEM-SOLVING FUNCTION OF LANGUAGE. CHAPTERS ARE ON (1) QUALIFICATION, CLASSIFICATION, AND ABSTRACTION, (2) SIGNS, REPRESENTATIONS, SYMBOLS, AND MATRICES, (3) ANALYSIS (BY CLASSIFICATION,…

  7. Stochastic Analysis 2010

    CERN Document Server

    Crisan, Dan

    2011-01-01

    "Stochastic Analysis" aims to provide mathematical tools to describe and model high dimensional random systems. Such tools arise in the study of Stochastic Differential Equations and Stochastic Partial Differential Equations, Infinite Dimensional Stochastic Geometry, Random Media and Interacting Particle Systems, Super-processes, Stochastic Filtering, Mathematical Finance, etc. Stochastic Analysis has emerged as a core area of late 20th century Mathematics and is currently undergoing a rapid scientific development. The special volume "Stochastic Analysis 2010" provides a sa

  8. Mastering Clojure data analysis

    CERN Document Server

    Rochester, Eric

    2014-01-01

    This book consists of a practical, example-oriented approach that aims to help you learn how to use Clojure for data analysis quickly and efficiently.This book is great for those who have experience with Clojure and who need to use it to perform data analysis. This book will also be hugely beneficial for readers with basic experience in data analysis and statistics.

  9. Poverty Measurement and Analysis

    OpenAIRE

    Coudouel, Aline; Hentschel, Jesko; Wodon, Quentin

    2002-01-01

    This chapter offers a primer on poverty, inequality, and vulnerability analysis and a guide to resources on this topic. It is written for decision makers who want to define the type of information they need to monitor poverty reduction and make appropriate policy decisions and for the technical experts in charge of the analysis. The chapter takes a broad look at tools for analysis and provides a brief introduction to each topic. It also outlines why certain information is essential in policym...

  10. Nonlinear Principal Component Analysis

    OpenAIRE

    de Leeuw, Jan

    2011-01-01

    Two quite different forms of nonlinear principal component analysis have been proposed in the literature. The first one is associated with the names of Guttman, Burt, Hayashi, Benzécri, McDonald, De Leeuw, Hill, Nishisato. We call it multiple correspondence analysis. The second form has been discussed by Kruskal, Shepard, Roskam, Takane, Young, De Leeuw, Winsberg, Ramsay. We call it nonmetric principal component analysis. The two forms have been related and combined, both geometricall...

  11. Introduction to analysis

    CERN Document Server

    Gaughan, Edward D

    2009-01-01

    Introduction to Analysis is designed to bridge the gap between the intuitive calculus usually offered at the undergraduate level and the sophisticated analysis courses the student encounters at the graduate level. In this book the student is given the vocabulary and facts necessary for further study in analysis. The course for which it is designed is usually offered at the junior level, and it is assumed that the student has little or no previous experience with proofs in analysis. A considerable amount of time is spent motivating the theorems and proofs and developing the reader's intuition.

  12. Sensitivity and uncertainty analysis

    CERN Document Server

    Cacuci, Dan G; Navon, Ionel Michael

    2005-01-01

    As computer-assisted modeling and analysis of physical processes have continued to grow and diversify, sensitivity and uncertainty analyses have become indispensable scientific tools. Sensitivity and Uncertainty Analysis. Volume I: Theory focused on the mathematical underpinnings of two important methods for such analyses: the Adjoint Sensitivity Analysis Procedure and the Global Adjoint Sensitivity Analysis Procedure. This volume concentrates on the practical aspects of performing these analyses for large-scale systems. The applications addressed include two-phase flow problems, a radiative c

  13. Risk analysis methodology survey

    Science.gov (United States)

    Batson, Robert G.

    1987-01-01

    NASA regulations require that formal risk analysis be performed on a program at each of several milestones as it moves toward full-scale development. Program risk analysis is discussed as a systems analysis approach, an iterative process (identification, assessment, management), and a collection of techniques. These techniques, which range from simple to complex network-based simulation were surveyed. A Program Risk Analysis Handbook was prepared in order to provide both analyst and manager with a guide for selection of the most appropriate technique.

  14. Space Weather Analysis

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Space Weather Analysis archives are model output of ionospheric, thermospheric and magnetospheric particle populations, energies and electrodynamics

  15. Hazard Analysis Database Report

    Energy Technology Data Exchange (ETDEWEB)

    GRAMS, W.H.

    2000-12-28

    The Hazard Analysis Database was developed in conjunction with the hazard analysis activities conducted in accordance with DOE-STD-3009-94, Preparation Guide for U S . Department of Energy Nonreactor Nuclear Facility Safety Analysis Reports, for HNF-SD-WM-SAR-067, Tank Farms Final Safety Analysis Report (FSAR). The FSAR is part of the approved Authorization Basis (AB) for the River Protection Project (RPP). This document describes, identifies, and defines the contents and structure of the Tank Farms FSAR Hazard Analysis Database and documents the configuration control changes made to the database. The Hazard Analysis Database contains the collection of information generated during the initial hazard evaluations and the subsequent hazard and accident analysis activities. The Hazard Analysis Database supports the preparation of Chapters 3 ,4 , and 5 of the Tank Farms FSAR and the Unreviewed Safety Question (USQ) process and consists of two major, interrelated data sets: (1) Hazard Analysis Database: Data from the results of the hazard evaluations, and (2) Hazard Topography Database: Data from the system familiarization and hazard identification.

  16. Textile Technology Analysis Lab

    Data.gov (United States)

    Federal Laboratory Consortium — The Textile Analysis Labis built for evaluating and characterizing the physical properties of an array of textile materials, but specifically those used in aircrew...

  17. Circuit analysis with Multisim

    CERN Document Server

    Baez-Lopez, David

    2011-01-01

    This book is concerned with circuit simulation using National Instruments Multisim. It focuses on the use and comprehension of the working techniques for electrical and electronic circuit simulation. The first chapters are devoted to basic circuit analysis.It starts by describing in detail how to perform a DC analysis using only resistors and independent and controlled sources. Then, it introduces capacitors and inductors to make a transient analysis. In the case of transient analysis, it is possible to have an initial condition either in the capacitor voltage or in the inductor current, or bo

  18. Chemical Analysis Facility

    Data.gov (United States)

    Federal Laboratory Consortium — FUNCTION: Uses state-of-the-art instrumentation for qualitative and quantitative analysis of organic and inorganic compounds, and biomolecules from gas, liquid, and...

  19. Analysis of food contaminants

    National Research Council Canada - National Science Library

    Gilbert, John

    1984-01-01

    ... quantification methods used in the analysis of mycotoxins in foods - Confirmation and quantification of trace organic food contaminants by mass spectrometry-selected ion monitoring - Chemiluminescence...

  20. Finite element analysis

    CERN Document Server

    2010-01-01

    Finite element analysis is an engineering method for the numerical analysis of complex structures. This book provides a bird's eye view on this very broad matter through 27 original and innovative research studies exhibiting various investigation directions. Through its chapters the reader will have access to works related to Biomedical Engineering, Materials Engineering, Process Analysis and Civil Engineering. The text is addressed not only to researchers, but also to professional engineers, engineering lecturers and students seeking to gain a better understanding of where Finite Element Analysis stands today.

  1. Chemical Security Analysis Center

    Data.gov (United States)

    Federal Laboratory Consortium — In 2006, by Presidential Directive, DHS established the Chemical Security Analysis Center (CSAC) to identify and assess chemical threats and vulnerabilities in the...

  2. International Market Analysis

    DEFF Research Database (Denmark)

    Sørensen, Olav Jull

    2009-01-01

    The review presents the book International Market Analysis: Theories and Methods, written by John Kuiada, professor at Centre of International Business, Department of Business Studies, Aalborg University. The book is refreshingly new in its way of looking at a classical problem. It looks at market...... analysis from the point of vie of ways of thinking about markets. Furthermore, the book includes the concept of learning in the analysis of markets og how the way we understand business reality influneces our choice of methodology for market analysis....

  3. Geospatial Data Analysis Facility

    Data.gov (United States)

    Federal Laboratory Consortium — Geospatial application development, location-based services, spatial modeling, and spatial analysis are examples of the many research applications that this facility...

  4. Risk Analysis of Marine Structures

    DEFF Research Database (Denmark)

    Hansen, Peter Friis

    1998-01-01

    Basic concepts of risk analysis is introduced. Formulation and analysis of fault and event trees are treated.......Basic concepts of risk analysis is introduced. Formulation and analysis of fault and event trees are treated....

  5. Northern blotting analysis

    DEFF Research Database (Denmark)

    Josefsen, Knud; Nielsen, Henrik

    2011-01-01

    Northern blotting analysis is a classical method for analysis of the size and steady-state level of a specific RNA in a complex sample. In short, the RNA is size-fractionated by gel electrophoresis and transferred by blotting onto a membrane to which the RNA is covalently bound. Then, the membrane...... the gap to the more laborious nuclease protection experiments....

  6. Marketing research cluster analysis

    Directory of Open Access Journals (Sweden)

    Marić Nebojša

    2002-01-01

    Full Text Available One area of applications of cluster analysis in marketing is identification of groups of cities and towns with similar demographic profiles. This paper considers main aspects of cluster analysis by an example of clustering 12 cities with the use of Minitab software.

  7. duction to discourse analysis

    African Journals Online (AJOL)

    description of the structure of a text as defined which are the conversational and writ- ten genres, each ... The skills gained in analysis of discourse in part one are a prerequisite for handling work in part two, which is basically a practice section. This second part is largely an application of the skills of discourse analysis.

  8. Structural analysis for diagnosis

    DEFF Research Database (Denmark)

    Izadi-Zamanabadi, Roozbeh; Blanke, M.

    2002-01-01

    Aiming at design of algorithms for fault diagnosis, structural analysis of systems offers concise yet easy overall analysis. Graph-based matching, which is the essential tech-nique to obtain redundant information for diagnosis, is reconsidered in this paper. Matching is reformulated as a problem...

  9. Structural analysis for Diagnosis

    DEFF Research Database (Denmark)

    Izadi-Zamanabadi, Roozbeh; Blanke, M.

    2001-01-01

    Aiming at design of algorithms for fault diagnosis, structural analysis of systems offers concise yet easy overall analysis. Graph-based matching, which is the essential technique to obtain redundant information for diagnosis, is re-considered in this paper. Matching is re-formulated as a problem...

  10. Electric field analysis

    CERN Document Server

    Chakravorti, Sivaji

    2015-01-01

    This book prepares newcomers to dive into the realm of electric field analysis. The book details why one should perform electric field analysis and what are its practical implications. It emphasizes both the fundamentals and modern computational methods of electric machines. The book covers practical applications of the numerical methods in high voltage equipment, including transmission lines, power transformers, cables, and gas insulated systems.

  11. Time series analysis.

    NARCIS (Netherlands)

    2013-01-01

    Time series analysis can be used to quantitatively monitor, describe, explain, and predict road safety developments. Time series analysis techniques offer the possibility of quantitatively modelling road safety developments in such a way that the dependencies between the observations of time series

  12. Biological sequence analysis

    DEFF Research Database (Denmark)

    Durbin, Richard; Eddy, Sean; Krogh, Anders Stærmose

    This book provides an up-to-date and tutorial-level overview of sequence analysis methods, with particular emphasis on probabilistic modelling. Discussed methods include pairwise alignment, hidden Markov models, multiple alignment, profile searches, RNA secondary structure analysis, and phylogene...

  13. Proximate Analysis of Coal

    Science.gov (United States)

    Donahue, Craig J.; Rais, Elizabeth A.

    2009-01-01

    This lab experiment illustrates the use of thermogravimetric analysis (TGA) to perform proximate analysis on a series of coal samples of different rank. Peat and coke are also examined. A total of four exercises are described. These are dry exercises as students interpret previously recorded scans. The weight percent moisture, volatile matter,…

  14. Longitudinal Meta-analysis

    NARCIS (Netherlands)

    Hox, J.J.; Maas, C.J.M.; Lensvelt-Mulders, G.J.L.M.

    2004-01-01

    The goal of meta-analysis is to integrate the research results of a number of studies on a specific topic. Characteristic for meta-analysis is that in general only the summary statistics of the studies are used and not the original data. When the published research results to be integrated

  15. Interactive Controls Analysis (INCA)

    Science.gov (United States)

    Bauer, Frank H.

    1989-01-01

    Version 3.12 of INCA provides user-friendly environment for design and analysis of linear control systems. System configuration and parameters easily adjusted, enabling INCA user to create compensation networks and perform sensitivity analysis in convenient manner. Full complement of graphical routines makes output easy to understand. Written in Pascal and FORTRAN.

  16. meta-analysis

    Indian Academy of Sciences (India)

    Literatures of various meta-analysis suggest significant association between presence of maternal polymorphism and birth of DS child. Wu et al. (2014) provided the result on. 28 publications that included 2806 cases and 4597 control mothers for MTHFR 677 C–T analysis. They also performed. Journal of Genetics, Vol.

  17. FOOD RISK ANALYSIS

    Science.gov (United States)

    Food risk analysis is a holistic approach to food safety because it considers all aspects of the problem. Risk assessment modeling is the foundation of food risk analysis. Proper design and simulation of the risk assessment model is important to properly predict and control risk. Because of knowl...

  18. Spectroscopic analysis and control

    Science.gov (United States)

    Tate; , James D.; Reed, Christopher J.; Domke, Christopher H.; Le, Linh; Seasholtz, Mary Beth; Weber, Andy; Lipp, Charles

    2017-04-18

    Apparatus for spectroscopic analysis which includes a tunable diode laser spectrometer having a digital output signal and a digital computer for receiving the digital output signal from the spectrometer, the digital computer programmed to process the digital output signal using a multivariate regression algorithm. In addition, a spectroscopic method of analysis using such apparatus. Finally, a method for controlling an ethylene cracker hydrogenator.

  19. Operational Modal Analysis Tutorial

    DEFF Research Database (Denmark)

    Brincker, Rune; Andersen, Palle

    In this paper the basic principles in operational modal testing and analysis are presented and discussed. A brief review of the techniques for operational modal testing and identification is presented, and it is argued, that there is now a wide range of techniques for effective identification of ...... estimation, vibration level estimation and fatigue analysis....

  20. Systems engineering and analysis

    CERN Document Server

    Blanchard, Benjamin S

    2010-01-01

    For senior-level undergraduate and first and second year graduate systems engineering and related courses. A total life-cycle approach to systems and their analysis. This practical introduction to systems engineering and analysis provides the concepts, methodologies, models, and tools needed to understand and implement a total life-cycle approach to systems and their analysis. The authors focus first on the process of bringing systems into being--beginning with the identification of a need and extending that need through requirements determination, functional analysis and allocation, design synthesis, evaluation, and validation, operation and support, phase-out, and disposal. Next, the authors discuss the improvement of systems currently in being, showing that by employing the iterative process of analysis, evaluation, feedback, and modification, most systems in existence can be improved in their affordability, effectiveness, and stakeholder satisfaction.

  1. Java Analysis Studio

    Energy Technology Data Exchange (ETDEWEB)

    Johnson, Anthony S

    1998-10-23

    Java Analysis Studio is a desktop data analysis application aimed primarily at offline analysis of high-energy physics data. The goal is to make the application independent of any particular data format, so that it can be used to analyze data from any experiment. The application features a rich graphical user interface (GUI) aimed at making the program easy to learn and use, but which at the same time allows the user to perform arbitrarily complex data analysis tasks by writing analysis modules in Java. The application can be used either as a standalone application, or as a client for a remote Java Data Server. The client-server mechanism is targeted particularly at allowing remote users to access large data samples stored on a central data center in a natural and efficient way.

  2. Functional data analysis

    CERN Document Server

    Ramsay, J O

    1997-01-01

    Scientists today collect samples of curves and other functional observations. This monograph presents many ideas and techniques for such data. Included are expressions in the functional domain of such classics as linear regression, principal components analysis, linear modelling, and canonical correlation analysis, as well as specifically functional techniques such as curve registration and principal differential analysis. Data arising in real applications are used throughout for both motivation and illustration, showing how functional approaches allow us to see new things, especially by exploiting the smoothness of the processes generating the data. The data sets exemplify the wide scope of functional data analysis; they are drwan from growth analysis, meterology, biomechanics, equine science, economics, and medicine. The book presents novel statistical technology while keeping the mathematical level widely accessible. It is designed to appeal to students, to applied data analysts, and to experienced researc...

  3. Social Set Analysis

    DEFF Research Database (Denmark)

    Vatrapu, Ravi; Mukkamala, Raghava Rao; Hussain, Abid

    2016-01-01

    this limitation, based on the sociology of associations and the mathematics of set theory, this paper presents a new approach to big data analytics called social set analysis. Social set analysis consists of a generative framework for the philosophies of computational social science, theory of social data......, conceptual and formal models of social data, and an analytical framework for combining big social data sets with organizational and societal data sets. Three empirical studies of big social data are presented to illustrate and demonstrate social set analysis in terms of fuzzy set-theoretical sentiment...... analysis, crisp set-theoretical interaction analysis, and event-studies-oriented set-theoretical visualizations. Implications for big data analytics, current limitations of the set-theoretical approach, and future directions are outlined....

  4. K Basin safety analysis

    Energy Technology Data Exchange (ETDEWEB)

    Porten, D.R.; Crowe, R.D.

    1994-12-16

    The purpose of this accident safety analysis is to document in detail, analyses whose results were reported in summary form in the K Basins Safety Analysis Report WHC-SD-SNF-SAR-001. The safety analysis addressed the potential for release of radioactive and non-radioactive hazardous material located in the K Basins and their supporting facilities. The safety analysis covers the hazards associated with normal K Basin fuel storage and handling operations, fuel encapsulation, sludge encapsulation, and canister clean-up and disposal. After a review of the Criticality Safety Evaluation of the K Basin activities, the following postulated events were evaluated: Crane failure and casks dropped into loadout pit; Design basis earthquake; Hypothetical loss of basin water accident analysis; Combustion of uranium fuel following dryout; Crane failure and cask dropped onto floor of transfer area; Spent ion exchange shipment for burial; Hydrogen deflagration in ion exchange modules and filters; Release of Chlorine; Power availability and reliability; and Ashfall.

  5. Gait analysis: clinical facts.

    Science.gov (United States)

    Baker, Richard; Esquenazi, Alberto; Benedetti, Maria G; Desloovere, Kaat

    2016-08-01

    Gait analysis is a well-established tool for the quantitative assessment of gait disturbances providing functional diagnosis, assessment for treatment planning, and monitoring of disease progress. There is a large volume of literature on the research use of gait analysis, but evidence on its clinical routine use supports a favorable cost-benefit ratio in a limited number of conditions. Initially gait analysis was introduced to clinical practice to improve the management of children with cerebral palsy. However, there is good evidence to extend its use to patients with various upper motor neuron diseases, and to lower limb amputation. Thereby, the methodology for properly conducting and interpreting the exam is of paramount relevance. Appropriateness of gait analysis prescription and reliability of data obtained are required in the clinical environment. This paper provides an overview on guidelines for managing a clinical gait analysis service and on the principal clinical domains of its application: cerebral palsy, stroke, traumatic brain injury and lower limb amputation.

  6. Robust multivariate analysis

    CERN Document Server

    J Olive, David

    2017-01-01

    This text presents methods that are robust to the assumption of a multivariate normal distribution or methods that are robust to certain types of outliers. Instead of using exact theory based on the multivariate normal distribution, the simpler and more applicable large sample theory is given.  The text develops among the first practical robust regression and robust multivariate location and dispersion estimators backed by theory.   The robust techniques  are illustrated for methods such as principal component analysis, canonical correlation analysis, and factor analysis.  A simple way to bootstrap confidence regions is also provided. Much of the research on robust multivariate analysis in this book is being published for the first time. The text is suitable for a first course in Multivariate Statistical Analysis or a first course in Robust Statistics. This graduate text is also useful for people who are familiar with the traditional multivariate topics, but want to know more about handling data sets with...

  7. Essential real analysis

    CERN Document Server

    Field, Michael

    2017-01-01

    This book provides a rigorous introduction to the techniques and results of real analysis, metric spaces and multivariate differentiation, suitable for undergraduate courses. Starting from the very foundations of analysis, it offers a complete first course in real analysis, including topics rarely found in such detail in an undergraduate textbook such as the construction of non-analytic smooth functions, applications of the Euler-Maclaurin formula to estimates, and fractal geometry.  Drawing on the author’s extensive teaching and research experience, the exposition is guided by carefully chosen examples and counter-examples, with the emphasis placed on the key ideas underlying the theory. Much of the content is informed by its applicability: Fourier analysis is developed to the point where it can be rigorously applied to partial differential equations or computation, and the theory of metric spaces includes applications to ordinary differential equations and fractals. Essential Real Analysis will appeal t...

  8. Multivariate analysis methods for spectroscopic blood analysis

    Science.gov (United States)

    Wood, Michael F. G.; Rohani, Arash; Ghazalah, Rashid; Vitkin, I. Alex; Pawluczyk, Romuald

    2012-01-01

    Blood tests are an essential tool in clinical medicine with the ability diagnosis or monitor various diseases and conditions; however, the complexities of these measurements currently restrict them to a laboratory setting. P&P Optica has developed and currently produces patented high performance spectrometers and is developing a spectrometer-based system for rapid reagent-free blood analysis. An important aspect of this analysis is the need to extract the analyte specific information from the measured signal such that the analyte concentrations can be determined. To this end, advanced chemometric methods are currently being investigated and have been tested using simulated spectra. A blood plasma model was used to generate Raman, near infrared, and optical rotatory dispersion spectra with glucose as the target analyte. The potential of combined chemometric techniques, where multiple spectroscopy modalities are used in a single regression model to improve the prediction ability was investigated using unfold partial least squares and multiblock partial least squares. Results show improvement in the predictions of glucose levels using the combined methods and demonstrate potential for multiblock chemometrics in spectroscopic blood analysis.

  9. Methods of meta-analysis: an analysis.

    Science.gov (United States)

    Koretz, Ronald L

    2002-09-01

    To understand the principles of systematic reviewing and meta-analysis, using recent examples from the medical literature to highlight some of these points. The word 'meta-analysis' is an intimidating one, and its associated jargon makes it seem incomprehensible. Actually, it is only a mathematical maneuver to add up data in a systematic review; it might be better called 'meta-addition'. The systematic review is a process of using the best available evidence to answer a particular clinical question. Data combination (usually done with meta-analysis) increases the power to see small differences and makes a more precise estimate of a treatment effect. Its major drawback is heterogeneity (the proverbial problem of adding apples and oranges). Systematic reviews have been used by medical societies to create position statements. Such statements have suggested that parenteral nutrition is far less efficacious than previously believed. Systematic reviews in some areas of nutritional support have clarified type II errors. Problems exist, however, in a number of the published meta-analyses of aspects of this therapy. Especially in an era of resource restraint, we need to become more skilled at interpreting evidence from clinical research.

  10. Hazard Analysis Database Report

    Energy Technology Data Exchange (ETDEWEB)

    GAULT, G.W.

    1999-10-13

    The Hazard Analysis Database was developed in conjunction with the hazard analysis activities conducted in accordance with DOE-STD-3009-94, Preparation Guide for US Department of Energy Nonreactor Nuclear Facility Safety Analysis Reports, for the Tank Waste Remediation System (TWRS) Final Safety Analysis Report (FSAR). The FSAR is part of the approved TWRS Authorization Basis (AB). This document describes, identifies, and defines the contents and structure of the TWRS FSAR Hazard Analysis Database and documents the configuration control changes made to the database. The TWRS Hazard Analysis Database contains the collection of information generated during the initial hazard evaluations and the subsequent hazard and accident analysis activities. The database supports the preparation of Chapters 3,4, and 5 of the TWRS FSAR and the USQ process and consists of two major, interrelated data sets: (1) Hazard Evaluation Database--Data from the results of the hazard evaluations; and (2) Hazard Topography Database--Data from the system familiarization and hazard identification.

  11. A PROOF Analysis Framework

    Science.gov (United States)

    González Caballero, I.; Rodríguez Marrero, A.; Fernández del Castillo, E.; Cuesta Noriega, A.

    2012-12-01

    The analysis of the complex LHC data usually follows a standard path that aims at minimizing not only the amount of data but also the number of observables used. After a number of steps of slimming and skimming the data, the remaining few terabytes of ROOT files hold a selection of the events and a flat structure for the variables needed that can be more easily inspected and traversed in the final stages of the analysis. PROOF arises at this point as an efficient mechanism to distribute the analysis load by taking advantage of all the cores in modern CPUs through PROOF Lite, or by using PROOF Cluster or PROOF on Demand tools to build dynamic PROOF cluster on computing facilities with spare CPUs. However using PROOF at the level required for a serious analysis introduces some difficulties that may scare new adopters. We have developed the PROOF Analysis Framework (PAF) to facilitate the development of new analysis by uniformly exposing the PROOF related configurations across technologies and by taking care of the routine tasks as much as possible. We describe the details of the PAF implementation as well as how we succeeded in engaging a group of CMS physicists to use PAF as their daily analysis framework.

  12. Dynamics in Epistasis Analysis.

    Science.gov (United States)

    Awdeh, Aseel; Phenix, Hilary; Kaern, Mads; Perkins, Theodore

    2017-01-16

    Finding regulatory relationships between genes, including the direction and nature of influence between them, is a fundamental challenge in the field of molecular genetics. One classical approach to this problem is epistasis analysis. Broadly speaking, epistasis analysis infers the regulatory relationships between a pair of genes in a genetic pathway by considering the patterns of change in an observable trait resulting from single and double deletion of genes. While classical epistasis analysis has yielded deep insights on numerous genetic pathways, it is not without limitations. Here, we explore the possibility of dynamic epistasis analysis, in which, in addition to performing genetic perturbations of a pathway, we drive the pathway by a time-varying upstream signal. We explore the theoretical power of dynamical epistasis analysis by conducting an identifiability analysis of Boolean models of genetic pathways, comparing static and dynamic approaches. We find that even relatively simple input dynamics greatly increases the power of epistasis analysis to discriminate alternative network structures. Further, we explore the question of experiment design, and show that a subset of short time-varying signals, which we call dynamic primitives, allow maximum discriminative power with a reduced number of experiments.

  13. Applied nonstandard analysis

    CERN Document Server

    Davis, Martin

    2005-01-01

    Geared toward upper-level undergraduates and graduate students, this text explores the applications of nonstandard analysis without assuming any knowledge of mathematical logic. It develops the key techniques of nonstandard analysis at the outset from a single, powerful construction; then, beginning with a nonstandard construction of the real number system, it leads students through a nonstandard treatment of the basic topics of elementary real analysis, topological spaces, and Hilbert space.Important topics include nonstandard treatments of equicontinuity, nonmeasurable sets, and the existenc

  14. Static Analysis of IMC

    DEFF Research Database (Denmark)

    Skrypnyuk, Nataliya; Nielson, Flemming; Pilegaard, Henrik

    2012-01-01

    hand, checking properties on process algebraic descriptions is often hard, while “unfolding” them into the Labelled Transition Systems can lead to the infamous state space explosion problem.In this work we use a subtype of Data Flow Analysis on systems defined by finite-state process algebras with CSP......-type synchronisation – in particular, on our variant of IMC with a more permissive syntax, i.e. with a possibility to start a bounded number of new processes. We prove that the defined Pathway Analysis captures all the properties of the systems, i.e. is precise. The results of the Pathway Analysis can be therefore...

  15. Functional Object Analysis

    DEFF Research Database (Denmark)

    Raket, Lars Lau

    We propose a direction it the field of statistics which we will call functional object analysis. This subfields considers the analysis of functional objects defined on continuous domains. In this setting we will focus on model-based statistics, with a particularly emphasis on mixed......-effect formulations, where the observed functional signal is assumed to consist of both fixed and random functional effects. This thesis takes the initial steps toward the development of likelihood-based methodology for functional objects. We first consider analysis of functional data defined on high...

  16. [Practical risk analysis].

    Science.gov (United States)

    Lisbona, A; Valero, M

    2015-10-01

    Risk analysis is typically considered from two complementary points of view: predictive analysis performed prior, and retrospective analysis, which follows the internal reporting of adverse situations or malfunctions, both on the organizational and material or human aspects. The purpose of these additional analyzes is to ensure that planned or implemented measures allow to keep risks to a level deemed tolerable or acceptable at a given time and in a given situation. Where a risk is deemed unacceptable, risk reduction measures should be considered (prevention, limiting the consequences and protection). Copyright © 2015. Published by Elsevier SAS.

  17. Android malware and analysis

    CERN Document Server

    Dunham, Ken

    2014-01-01

    The rapid growth and development of Android-based devices has resulted in a wealth of sensitive information on mobile devices that offer minimal malware protection. This has created an immediate demand for security professionals that understand how to best approach the subject of Android malware threats and analysis.In Android Malware and Analysis, Ken Dunham, renowned global malware expert and author, teams up with international experts to document the best tools and tactics available for analyzing Android malware. The book covers both methods of malware analysis: dynamic and static.This tact

  18. Wood Products Analysis

    Science.gov (United States)

    1990-01-01

    Structural Reliability Consultants' computer program creates graphic plots showing the statistical parameters of glue laminated timbers, or 'glulam.' The company president, Dr. Joseph Murphy, read in NASA Tech Briefs about work related to analysis of Space Shuttle surface tile strength performed for Johnson Space Center by Rockwell International Corporation. Analysis led to a theory of 'consistent tolerance bounds' for statistical distributions, applicable in industrial testing where statistical analysis can influence product development and use. Dr. Murphy then obtained the Tech Support Package that covers the subject in greater detail. The TSP became the basis for Dr. Murphy's computer program PC-DATA, which he is marketing commercially.

  19. Foundations of Risk Analysis

    CERN Document Server

    Aven, Terje

    2012-01-01

    Foundations of Risk Analysis presents the issues core to risk analysis - understanding what risk means, expressing risk, building risk models, addressing uncertainty, and applying probability models to real problems. The author provides the readers with the knowledge and basic thinking they require to successfully manage risk and uncertainty to support decision making. This updated edition reflects recent developments on risk and uncertainty concepts, representations and treatment. New material in Foundations of Risk Analysis includes:An up to date presentation of how to understand, define and

  20. Foundations of analysis

    CERN Document Server

    Taylor, Joseph L

    2012-01-01

    Foundations of Analysis is an excellent new text for undergraduate students in real analysis. More than other texts in the subject, it is clear, concise and to the point, without extra bells and whistles. It also has many good exercises that help illustrate the material. My students were very satisfied with it.-Nat Smale, University of Utah I have taught our Foundations of Analysis course (based on Joe Taylor.s book) several times recently, and have enjoyed doing so. The book is well-written, clear, and concise, and supplies the students with very good introductory discussions of the various t

  1. Static analysis for blinding

    DEFF Research Database (Denmark)

    Nielsen, Christoffer Rosenkilde; Nielson, Hanne Riis

    2006-01-01

    operation blinding. In this paper we study the theoretical foundations for one of the successful approaches to validating cryptographic protocols and we extend it to handle the blinding primitive. Our static analysis approach is based on Flow Logic; this gives us a clean separation between the specification...... of the analysis and its realisation in an automatic tool. We concentrate on the former in the present paper and provide the semantic foundation for our analysis of protocols using blinding - also in the presence of malicious attackers....

  2. Methods of Multivariate Analysis

    CERN Document Server

    Rencher, Alvin C

    2012-01-01

    Praise for the Second Edition "This book is a systematic, well-written, well-organized text on multivariate analysis packed with intuition and insight . . . There is much practical wisdom in this book that is hard to find elsewhere."-IIE Transactions Filled with new and timely content, Methods of Multivariate Analysis, Third Edition provides examples and exercises based on more than sixty real data sets from a wide variety of scientific fields. It takes a "methods" approach to the subject, placing an emphasis on how students and practitioners can employ multivariate analysis in real-life sit

  3. Basic stress analysis

    CERN Document Server

    Iremonger, M J

    1982-01-01

    BASIC Stress Analysis aims to help students to become proficient at BASIC programming by actually using it in an important engineering subject. It also enables the student to use computing as a means of learning stress analysis because writing a program is analogous to teaching-it is necessary to understand the subject matter. The book begins by introducing the BASIC approach and the concept of stress analysis at first- and second-year undergraduate level. Subsequent chapters contain a summary of relevant theory, worked examples containing computer programs, and a set of problems. Topics c

  4. Bayesian nonparametric data analysis

    CERN Document Server

    Müller, Peter; Jara, Alejandro; Hanson, Tim

    2015-01-01

    This book reviews nonparametric Bayesian methods and models that have proven useful in the context of data analysis. Rather than providing an encyclopedic review of probability models, the book’s structure follows a data analysis perspective. As such, the chapters are organized by traditional data analysis problems. In selecting specific nonparametric models, simpler and more traditional models are favored over specialized ones. The discussed methods are illustrated with a wealth of examples, including applications ranging from stylized examples to case studies from recent literature. The book also includes an extensive discussion of computational methods and details on their implementation. R code for many examples is included in on-line software pages.

  5. Real analysis and probability

    CERN Document Server

    Ash, Robert B; Lukacs, E

    1972-01-01

    Real Analysis and Probability provides the background in real analysis needed for the study of probability. Topics covered range from measure and integration theory to functional analysis and basic concepts of probability. The interplay between measure theory and topology is also discussed, along with conditional probability and expectation, the central limit theorem, and strong laws of large numbers with respect to martingale theory.Comprised of eight chapters, this volume begins with an overview of the basic concepts of the theory of measure and integration, followed by a presentation of var

  6. Systems analysis-independent analysis and verification

    Energy Technology Data Exchange (ETDEWEB)

    Badin, J.S.; DiPietro, J.P. [Energetics, Inc., Columbia, MD (United States)

    1995-09-01

    The DOE Hydrogen Program is supporting research, development, and demonstration activities to overcome the barriers to the integration of hydrogen into the Nation`s energy infrastructure. Much work is required to gain acceptance of hydrogen energy system concepts and to develop them for implementation. A systems analysis database has been created that includes a formal documentation of technology characterization profiles and cost and performance information. Through a systematic and quantitative approach, system developers can understand and address important issues and thereby assure effective and timely commercial implementation. This project builds upon and expands the previously developed and tested pathway model and provides the basis for a consistent and objective analysis of all hydrogen energy concepts considered by the DOE Hydrogen Program Manager. This project can greatly accelerate the development of a system by minimizing the risk of costly design evolutions, and by stimulating discussions, feedback, and coordination of key players and allows them to assess the analysis, evaluate the trade-offs, and to address any emerging problem areas. Specific analytical studies will result in the validation of the competitive feasibility of the proposed system and identify system development needs. Systems that are investigated include hydrogen bromine electrolysis, municipal solid waste gasification, electro-farming (biomass gasifier and PEM fuel cell), wind/hydrogen hybrid system for remote sites, home electrolysis and alternate infrastructure options, renewable-based electrolysis to fuel PEM fuel cell vehicle fleet, and geothermal energy used to produce hydrogen. These systems are compared to conventional and benchmark technologies. Interim results and findings are presented. Independent analyses emphasize quality, integrity, objectivity, a long-term perspective, corporate memory, and the merging of technical, economic, operational, and programmatic expertise.

  7. Summary Analysis: Hanford Site Composite Analysis Update

    Energy Technology Data Exchange (ETDEWEB)

    Nichols, W. E. [CH2M HILL Plateau Remediation Company, Richland, WA (United States); Lehman, L. L. [CH2M HILL Plateau Remediation Company, Richland, WA (United States)

    2017-06-05

    The Hanford Site’s currently maintained Composite Analysis, originally completed in 1998, requires an update. A previous update effort was undertaken by the U.S. Department of Energy (DOE) in 2001-2005, but was ended before completion to allow the Tank Closure & Waste Management Environmental Impact Statement (TC&WM EIS) (DOE/EIS-0391) to be prepared without potential for conflicting sitewide models. This EIS was issued in 2012, and the deferral was ended with guidance in memorandum “Modeling to Support Regulatory Decision Making at Hanford” (Williams, 2012) provided with the aim of ensuring subsequent modeling is consistent with the EIS.

  8. Main: Nucleotide Analysis [KOME

    Lifescience Database Archive (English)

    Full Text Available -acting regulatory DNA elements Database kome_place_search_result.zip kome_place_search_result ... ...Nucleotide Analysis PLACE search result Result of signal search against PLACE : cis

  9. Longitudinal categorical data analysis

    CERN Document Server

    Sutradhar, Brajendra C

    2014-01-01

    This is the first book in longitudinal categorical data analysis with parametric correlation models developed based on dynamic relationships among repeated categorical responses. This book is a natural generalization of the longitudinal binary data analysis to the multinomial data setup with more than two categories. Thus, unlike the existing books on cross-sectional categorical data analysis using log linear models, this book uses multinomial probability models both in cross-sectional and longitudinal setups. A theoretical foundation is provided for the analysis of univariate multinomial responses, by developing models systematically for the cases with no covariates as well as categorical covariates, both in cross-sectional and longitudinal setups. In the longitudinal setup, both stationary and non-stationary covariates are considered. These models have also been extended to the bivariate multinomial setup along with suitable covariates. For the inferences, the book uses the generalized quasi-likelihood as w...

  10. Analysis and logic

    CERN Document Server

    Henson, C Ward; Kechris, Alexander S; Odell, Edward; Finet, Catherine; Michaux, Christian; Cassels, J W S

    2003-01-01

    This volume comprises articles from four outstanding researchers who work at the cusp of analysis and logic. The emphasis is on active research topics; many results are presented that have not been published before and open problems are formulated.

  11. GAP Analysis Program (GAP)

    Data.gov (United States)

    Kansas Data Access and Support Center — The Kansas GAP Analysis Land Cover database depicts 43 land cover classes for the state of Kansas. The database was generated using a two-stage hybrid classification...

  12. Modern real analysis

    CERN Document Server

    Ziemer, William P

    2017-01-01

    This first year graduate text is a comprehensive resource in real analysis based on a modern treatment of measure and integration. Presented in a definitive and self-contained manner, it features a natural progression of concepts from simple to difficult. Several innovative topics are featured, including differentiation of measures, elements of Functional Analysis, the Riesz Representation Theorem, Schwartz distributions, the area formula, Sobolev functions and applications to harmonic functions. Together, the selection of topics forms a sound foundation in real analysis that is particularly suited to students going on to further study in partial differential equations. This second edition of Modern Real Analysis contains many substantial improvements, including the addition of problems for practicing techniques, and an entirely new section devoted to the relationship between Lebesgue and improper integrals. Aimed at graduate students with an understanding of advanced calculus, the text will also appeal to mo...

  13. Introduction to global analysis

    CERN Document Server

    Kahn, Donald W

    2007-01-01

    This text introduces the methods of mathematical analysis as applied to manifolds, including the roles of differentiation and integration, infinite dimensions, Morse theory, Lie groups, and dynamical systems. 1980 edition.

  14. Water Quality Analysis Simulation

    Data.gov (United States)

    U.S. Environmental Protection Agency — The Water Quality analysis simulation Program, an enhancement of the original WASP. This model helps users interpret and predict water quality responses to natural...

  15. Pericardial Fluid Analysis

    Science.gov (United States)

    ... Factor Antibody Iron Iron Tests JAK2 Mutation Kidney Stone Analysis Kidney Stone Risk Panel KRAS Mutation Lactate Lactate Dehydrogenase (LD) ... may follow a respiratory infection or a chest cold. Bleeding – bleeding disorders and/or trauma can lead ...

  16. Biorefinery Sustainability Analysis

    DEFF Research Database (Denmark)

    J. S. M. Silva, Carla; Prunescu, Remus Mihail; Gernaey, Krist

    2017-01-01

    This chapter deals with sustainability analysis of biorefinery systems in terms of environmental and socio-economic indicators . Life cycle analysis has methodological issues related to the functional unit (FU), allocation , land use and biogenic carbon neutrality of the reference system and of t......This chapter deals with sustainability analysis of biorefinery systems in terms of environmental and socio-economic indicators . Life cycle analysis has methodological issues related to the functional unit (FU), allocation , land use and biogenic carbon neutrality of the reference system...... and of the biorefinery-based system. Socio-economic criteria and indicators used in sustainability frameworks assessment are presented and discussed. There is not one single methodology that can aptly cover the synergies of environmental, economic, social and governance issues required to assess the sustainable...

  17. Perspectives in shape analysis

    CERN Document Server

    Bruckstein, Alfred; Maragos, Petros; Wuhrer, Stefanie

    2016-01-01

    This book presents recent advances in the field of shape analysis. Written by experts in the fields of continuous-scale shape analysis, discrete shape analysis and sparsity, and numerical computing who hail from different communities, it provides a unique view of the topic from a broad range of perspectives. Over the last decade, it has become increasingly affordable to digitize shape information at high resolution. Yet analyzing and processing this data remains challenging because of the large amount of data involved, and because modern applications such as human-computer interaction require real-time processing. Meeting these challenges requires interdisciplinary approaches that combine concepts from a variety of research areas, including numerical computing, differential geometry, deformable shape modeling, sparse data representation, and machine learning. On the algorithmic side, many shape analysis tasks are modeled using partial differential equations, which can be solved using tools from the field of n...

  18. Towards Cognitive Component Analysis

    DEFF Research Database (Denmark)

    Hansen, Lars Kai; Ahrendt, Peter; Larsen, Jan

    2005-01-01

    Cognitive component analysis (COCA) is here defined as the process of unsupervised grouping of data such that the ensuing group structure is well-aligned with that resulting from human cognitive activity. We have earlier demonstrated that independent components analysis is relevant for representi...... semantics, not only in text, but also in dynamic text (chat), images, and combinations of text and images. Here we further expand on the relevance of the ICA model for representing context, including two new analyzes of abstract data: social networks and musical features.......Cognitive component analysis (COCA) is here defined as the process of unsupervised grouping of data such that the ensuing group structure is well-aligned with that resulting from human cognitive activity. We have earlier demonstrated that independent components analysis is relevant for representing...

  19. Sparse discriminant analysis

    DEFF Research Database (Denmark)

    Clemmensen, Line Katrine Harder; Hastie, Trevor; Witten, Daniela

    2011-01-01

    commonplace in biological and medical applications. In this setting, a traditional approach involves performing feature selection before classification. We propose sparse discriminant analysis, a method for performing linear discriminant analysis with a sparseness criterion imposed such that classification......We consider the problem of performing interpretable classification in the high-dimensional setting, in which the number of features is very large and the number of observations is limited. This setting has been studied extensively in the chemometrics literature, and more recently has become...... and feature selection are performed simultaneously. Sparse discriminant analysis is based on the optimal scoring interpretation of linear discriminant analysis, and can be extended to perform sparse discrimination via mixtures of Gaussians if boundaries between classes are nonlinear or if subgroups...

  20. Lectures on Functional Analysis

    CERN Document Server

    Kurepa, Svetozar; Kraljević, Hrvoje

    1987-01-01

    This volume consists of a long monographic paper by J. Hoffmann-Jorgensen and a number of shorter research papers and survey articles covering different aspects of functional analysis and its application to probability theory and differential equations.

  1. Analysis of extreme events

    CSIR Research Space (South Africa)

    Khuluse, S

    2009-04-01

    Full Text Available ) determination of the distribution of the damage and (iii) preparation of products that enable prediction of future risk events. The methodology provided by extreme value theory can also be a powerful tool in risk analysis...

  2. Elevated temperature deformation analysis

    Science.gov (United States)

    Nelson, J. M.

    The paper demonstrates a novel nondestructive test and data analysis technique for quantitative measurement of circumferentially varying flexural moduli of 2D involute carbon-carbon tag rings containing localized wrinkles and dry plies at room and rocket nozzle operating temperatures. Room temperature computed tomography (CT) deformation tests were performed on 11 carbon-carbon rings selected from the cylinders and cones fabricated under the NDE data application program and two plexiglass rings fabricated under this program. This testing and analysis technique is found to have primary application in validation of analytical models for carbon-carbon performance modeling. Both effects of defects assumptions, the effects of high temperature environments, and failure-related models can be validated effectively. The testing and analysis process can be interwoven in a manner that increases the engineering understanding of the material behavior and permits rapid resolution of analysis questions. Specific recommendations for the development and implementation of this technique are provided.

  3. Main: Nucleotide Analysis [KOME

    Lifescience Database Archive (English)

    Full Text Available Nucleotide Analysis Japonica genome blast search result Result of blastn search against japon...ica genome sequence kome_japonica_genome_blast_search_result.zip kome_japonica_genome_blast_search_result ...

  4. Water Quality Analysis Simulation

    Science.gov (United States)

    The Water Quality analysis simulation Program, an enhancement of the original WASP. This model helps users interpret and predict water quality responses to natural phenomena and man-made pollution for variious pollution management decisions.

  5. Peritoneal Fluid Analysis

    Science.gov (United States)

    ... Analysis Kidney Stone Risk Panel KRAS Mutation Lactate Lactate Dehydrogenase (LD) Lactoferrin Lactose Tolerance Tests LDL Cholesterol LDL ... Peritoneal fluid glucose, amylase, tumor markers, bilirubin, creatinine, lactate dehydrogenase (LD) Microscopic examination – may be performed if infection ...

  6. Pleural Fluid Analysis Test

    Science.gov (United States)

    ... Analysis Kidney Stone Risk Panel KRAS Mutation Lactate Lactate Dehydrogenase (LD) Lactoferrin Lactose Tolerance Tests LDL Cholesterol LDL ... set of tests (cell count, protein, albumin, and lactate dehydrogenase (LD) level, and appearance of the fluid) to ...

  7. Analysis of rare categories

    CERN Document Server

    He, Jingrui

    2012-01-01

    This book focuses on rare category analysis where the majority classes have smooth distributions and the minority classes exhibit the compactness property. It focuses on challenging cases where the support regions of the majority and minority classes overlap.

  8. Regression analysis by example

    National Research Council Canada - National Science Library

    Chatterjee, Samprit; Hadi, Ali S

    2012-01-01

    .... The emphasis continues to be on exploratory data analysis rather than statistical theory. The coverage offers in-depth treatment of regression diagnostics, transformation, multicollinearity, logistic regression, and robust regression...

  9. NOAA's Inundation Analysis Tool

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Coastal storms and other meteorological phenomenon can have a significant impact on how high water levels rise and how often. The inundation analysis program is...

  10. Statistical data analysis handbook

    National Research Council Canada - National Science Library

    Wall, Francis J

    1986-01-01

    It must be emphasized that this is not a text book on statistics. Instead it is a working tool that presents data analysis in clear, concise terms which can be readily understood even by those without formal training in statistics...

  11. Design and Analysis Facility

    Data.gov (United States)

    Federal Laboratory Consortium — Provides engineering design of aircraft components, subsystems and installations using Pro/E, Anvil 1000, CADKEY 97, AutoCAD 13. Engineering analysis tools include...

  12. Automating Security Protocol Analysis

    National Research Council Canada - National Science Library

    Mancini, Stephen

    2004-01-01

    .... Because of this, analysis of the protocol outside the encryption is becoming more important. Recent work by Joshua Guttman and others 9 have identified several properties that good protocols often exhibit...

  13. Electrical Subsurface Grounding Analysis

    Energy Technology Data Exchange (ETDEWEB)

    J.M. Calle

    2000-11-01

    The purpose and objective of this analysis is to determine the present grounding requirements of the Exploratory Studies Facility (ESF) subsurface electrical system and to verify that the actual grounding system and devices satisfy the requirements.

  14. Multidimensional nonlinear descriptive analysis

    CERN Document Server

    Nishisato, Shizuhiko

    2006-01-01

    Quantification of categorical, or non-numerical, data is a problem that scientists face across a wide range of disciplines. Exploring data analysis in various areas of research, such as the social sciences and biology, Multidimensional Nonlinear Descriptive Analysis presents methods for analyzing categorical data that are not necessarily sampled randomly from a normal population and often involve nonlinear relations. This reference not only provides an overview of multidimensional nonlinear descriptive analysis (MUNDA) of discrete data, it also offers new results in a variety of fields. The first part of the book covers conceptual and technical preliminaries needed to understand the data analysis in subsequent chapters. The next two parts contain applications of MUNDA to diverse data types, with each chapter devoted to one type of categorical data, a brief historical comment, and basic skills peculiar to the data types. The final part examines several problems and then concludes with suggestions for futu...

  15. ITS risk analysis.

    Science.gov (United States)

    1996-06-01

    Risk analysis plays a key role in the implementation of an architecture. Early definition of the situations, : processes, or events that have the potential for impeding the implementation of key elements of the ITS : National Architecture is a critic...

  16. a meta-analysis

    African Journals Online (AJOL)

    Keywords: Prostate cancer; XRCC3 gene; Genetic variant; Meta-analysis ... Pubmed, Excerpta Medica Database (EMBASE), and. Chinese National ... indicated a lack of heterogeneity among the studies17. The fixed .... able quality. Third, the ...

  17. Analysis in Banach spaces

    CERN Document Server

    Hytönen, Tuomas; Veraar, Mark; Weis, Lutz

    2016-01-01

    The present volume develops the theory of integration in Banach spaces, martingales and UMD spaces, and culminates in a treatment of the Hilbert transform, Littlewood-Paley theory and the vector-valued Mihlin multiplier theorem. Over the past fifteen years, motivated by regularity problems in evolution equations, there has been tremendous progress in the analysis of Banach space-valued functions and processes. The contents of this extensive and powerful toolbox have been mostly scattered around in research papers and lecture notes. Collecting this diverse body of material into a unified and accessible presentation fills a gap in the existing literature. The principal audience that we have in mind consists of researchers who need and use Analysis in Banach Spaces as a tool for studying problems in partial differential equations, harmonic analysis, and stochastic analysis. Self-contained and offering complete proofs, this work is accessible to graduate students and researchers with a background in functional an...

  18. Intelligent audio analysis

    CERN Document Server

    Schuller, Björn W

    2013-01-01

    This book provides the reader with the knowledge necessary for comprehension of the field of Intelligent Audio Analysis. It firstly introduces standard methods and discusses the typical Intelligent Audio Analysis chain going from audio data to audio features to audio recognition.  Further, an introduction to audio source separation, and enhancement and robustness are given. After the introductory parts, the book shows several applications for the three types of audio: speech, music, and general sound. Each task is shortly introduced, followed by a description of the specific data and methods applied, experiments and results, and a conclusion for this specific task. The books provides benchmark results and standardized test-beds for a broader range of audio analysis tasks. The main focus thereby lies on the parallel advancement of realism in audio analysis, as too often today’s results are overly optimistic owing to idealized testing conditions, and it serves to stimulate synergies arising from transfer of ...

  19. Canonical Information Analysis

    DEFF Research Database (Denmark)

    Vestergaard, Jacob Schack; Nielsen, Allan Aasbjerg

    2015-01-01

    Canonical correlation analysis is an established multivariate statistical method in which correlation between linear combinations of multivariate sets of variables is maximized. In canonical information analysis introduced here, linear correlation as a measure of association between variables...... is replaced by the information theoretical, entropy based measure mutual information, which is a much more general measure of association. We make canonical information analysis feasible for large sample problems, including for example multispectral images, due to the use of a fast kernel density estimator...... for entropy estimation. Canonical information analysis is applied successfully to (1) simple simulated data to illustrate the basic idea and evaluate performance, (2) fusion of weather radar and optical geostationary satellite data in a situation with heavy precipitation, and (3) change detection in optical...

  20. Materials analysis fast ions

    CERN Document Server

    Denker, A; Rauschenberg, J; Röhrich, J; Strub, E

    2006-01-01

    Materials analysis with ion beams exploits the interaction of ions with the electrons and nuclei in the sample. Among the vast variety of possible analytical techniques available with ion beams we will restrain to ion beam analysis with ion beams in the energy range from one to several MeV per mass unit. It is possible to use either the back-scattered projectiles (RBS – Rutherford Back Scattering) or the recoiled atoms itself (ERDA – Elastic Recoil Detection Analysis) from the elastic scattering processes. These techniques allow the simultaneous and absolute determination of stoichiometry and depth profiles of the detected elements. The interaction of the ions with the electrons in the sample produces holes in the inner electronic shells of the sample atoms, which recombine and emit X-rays characteristic for the element in question. Particle Induced X-ray Emission (PIXE) has shown to be a fast technique for the analysis of elements with an atomic number above 11.

  1. Scientific stream pollution analysis

    National Research Council Canada - National Science Library

    Nemerow, Nelson Leonard

    1974-01-01

    A comprehensive description of the analysis of water pollution that presents a careful balance of the biological,hydrological, chemical and mathematical concepts involved in the evaluation of stream...

  2. From analysis to surface

    DEFF Research Database (Denmark)

    Bemman, Brian; Meredith, David

    2014-01-01

    In recent years, a significant body of research has focused on developing algorithms for computing analyses of mu- sical works automatically from encodings of these works' surfaces [3,4,7,10,11]. The quality of the output of such analysis algorithms is typically evaluated by comparing it with a “......In recent years, a significant body of research has focused on developing algorithms for computing analyses of mu- sical works automatically from encodings of these works' surfaces [3,4,7,10,11]. The quality of the output of such analysis algorithms is typically evaluated by comparing...... it with a “ground truth” analysis of the same music pro- duced by a human expert (see, in particular, [5]). In this paper, we explore the problem of generating an encoding of the musical surface of a work automatically from a systematic encoding of an analysis. The ability to do this depends on one having...

  3. Systems Analysis Sub site

    Energy Technology Data Exchange (ETDEWEB)

    EERE

    2012-03-16

    Systems analysis provides direction, focus, and support for the development and introduction of hydrogen production, storage, and end-use technologies, and provides a basis for recommendations on a balanced portfolio of activities.

  4. Pathway analysis of IMC

    DEFF Research Database (Denmark)

    Skrypnyuk, Nataliya; Nielson, Flemming; Pilegaard, Henrik

    2009-01-01

    We present the ongoing work on the pathway analysis of a stochastic calculus. Firstly we present a particular stochastic calculus that we have chosen for our modeling - the Interactive Markov Chains calculus, IMC for short. After that we specify a few restrictions that we have introduced into the......We present the ongoing work on the pathway analysis of a stochastic calculus. Firstly we present a particular stochastic calculus that we have chosen for our modeling - the Interactive Markov Chains calculus, IMC for short. After that we specify a few restrictions that we have introduced...... into the syntax of IMC in order to make our analysis feasible. Finally we describe the analysis itself together with several theoretical results that we have proved for it....

  5. Job Hazard Analysis

    National Research Council Canada - National Science Library

    1998-01-01

    .... Establishing proper job procedures is one of the benefits of conducting a job hazard analysis carefully studying and recording each step of a job, identifying existing or potential job hazards...

  6. Russian River Analysis

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — This document is an analysis and summary of progress toward achieving the interim management objectives for the Russian River during the 1979 season. Additionally,...

  7. Errors from Image Analysis

    Energy Technology Data Exchange (ETDEWEB)

    Wood, William Monford [Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

    2015-02-23

    Presenting a systematic study of the standard analysis of rod-pinch radiographs for obtaining quantitative measurements of areal mass densities, and making suggestions for improving the methodology of obtaining quantitative information from radiographed objects.

  8. Biodiesel Emissions Analysis Program

    Science.gov (United States)

    Using existing data, the EPA's biodiesel emissions analysis program sought to quantify the air pollution emission effects of biodiesel for diesel engines that have not been specifically modified to operate on biodiesel.

  9. Energy Sector Market Analysis

    Energy Technology Data Exchange (ETDEWEB)

    Arent, D.; Benioff, R.; Mosey, G.; Bird, L.; Brown, J.; Brown, E.; Vimmerstedt, L.; Aabakken, J.; Parks, K.; Lapsa, M.; Davis, S.; Olszewski, M.; Cox, D.; McElhaney, K.; Hadley, S.; Hostick, D.; Nicholls, A.; McDonald, S.; Holloman, B.

    2006-10-01

    This paper presents the results of energy market analysis sponsored by the Department of Energy's (DOE) Weatherization and International Program (WIP) within the Office of Energy Efficiency and Renewable Energy (EERE). The analysis was conducted by a team of DOE laboratory experts from the National Renewable Energy Laboratory (NREL), Oak Ridge National Laboratory (ORNL), and Pacific Northwest National Laboratory (PNNL), with additional input from Lawrence Berkeley National Laboratory (LBNL). The analysis was structured to identify those markets and niches where government can create the biggest impact by informing management decisions in the private and public sectors. The analysis identifies those markets and niches where opportunities exist for increasing energy efficiency and renewable energy use.

  10. Full closure strategic analysis.

    Science.gov (United States)

    2014-07-01

    The full closure strategic analysis was conducted to create a decision process whereby full roadway : closures for construction and maintenance activities can be evaluated and approved or denied by CDOT : Traffic personnel. The study reviewed current...

  11. Principles of Fourier analysis

    CERN Document Server

    Howell, Kenneth B

    2001-01-01

    Fourier analysis is one of the most useful and widely employed sets of tools for the engineer, the scientist, and the applied mathematician. As such, students and practitioners in these disciplines need a practical and mathematically solid introduction to its principles. They need straightforward verifications of its results and formulas, and they need clear indications of the limitations of those results and formulas.Principles of Fourier Analysis furnishes all this and more. It provides a comprehensive overview of the mathematical theory of Fourier analysis, including the development of Fourier series, "classical" Fourier transforms, generalized Fourier transforms and analysis, and the discrete theory. Much of the author''s development is strikingly different from typical presentations. His approach to defining the classical Fourier transform results in a much cleaner, more coherent theory that leads naturally to a starting point for the generalized theory. He also introduces a new generalized theory based ...

  12. Qualitative Data Analysis Strategies

    OpenAIRE

    Greaves, Kristoffer

    2014-01-01

    A set of concept maps for qualitative data analysis strategies, inspired by Corbin, JM & Strauss, AL 2008, Basics of qualitative research: Techniques and procedures for developing grounded theory, 3rd edn, Sage Publications, Inc, Thousand Oaks, California.

  13. Applied functional analysis

    CERN Document Server

    Griffel, DH

    2002-01-01

    A stimulating introductory text, this volume examines many important applications of functional analysis to mechanics, fluid mechanics, diffusive growth, and approximation. Detailed enough to impart a thorough understanding, the text is also sufficiently straightforward for those unfamiliar with abstract analysis. Its four-part treatment begins with distribution theory and discussions of Green's functions. Essentially independent of the preceding material, the second and third parts deal with Banach spaces, Hilbert space, spectral theory, and variational techniques. The final part outlines the

  14. Computational Music Analysis

    DEFF Research Database (Denmark)

    in this intensely interdisciplinary field. A broad range of approaches are presented, employing techniques originating in disciplines such as linguistics, information theory, information retrieval, pattern recognition, machine learning, topology, algebra and signal processing. Many of the methods described draw...... music analysis, the book provides an invaluable resource for researchers, teachers and students in music theory and analysis, computer science, music information retrieval and related disciplines. It also provides a state-of-the-art reference for practitioners in the music technology industry....

  15. Invitation to classical analysis

    CERN Document Server

    Duren, Peter

    2012-01-01

    This book gives a rigorous treatment of selected topics in classical analysis, with many applications and examples. The exposition is at the undergraduate level, building on basic principles of advanced calculus without appeal to more sophisticated techniques of complex analysis and Lebesgue integration. Among the topics covered are Fourier series and integrals, approximation theory, Stirling's formula, the gamma function, Bernoulli numbers and polynomials, the Riemann zeta function, Tauberian theorems, elliptic integrals, ramifications of the Cantor set, and a theoretical discussion of differ

  16. Cuckoo malware analysis

    CERN Document Server

    Oktavianto, Digit

    2013-01-01

    This book is a step-by-step, practical tutorial for analyzing and detecting malware and performing digital investigations. This book features clear and concise guidance in an easily accessible format.Cuckoo Malware Analysis is great for anyone who wants to analyze malware through programming, networking, disassembling, forensics, and virtualization. Whether you are new to malware analysis or have some experience, this book will help you get started with Cuckoo Sandbox so you can start analysing malware effectively and efficiently.

  17. Benchmarking Multimodal Sentiment Analysis

    OpenAIRE

    Cambria, Erik; Hazarika, Devamanyu; Poria, Soujanya; Hussain, Amir; Subramaanyam, R. B. V.

    2017-01-01

    We propose a framework for multimodal sentiment analysis and emotion recognition using convolutional neural network-based feature extraction from text and visual modalities. We obtain a performance improvement of 10% over the state of the art by combining visual, text and audio features. We also discuss some major issues frequently ignored in multimodal sentiment analysis research: the role of speaker-independent models, importance of the modalities and generalizability. The paper thus serve ...

  18. Applied functional analysis

    CERN Document Server

    Oden, J Tinsley

    2010-01-01

    The textbook is designed to drive a crash course for beginning graduate students majoring in something besides mathematics, introducing mathematical foundations that lead to classical results in functional analysis. More specifically, Oden and Demkowicz want to prepare students to learn the variational theory of partial differential equations, distributions, and Sobolev spaces and numerical analysis with an emphasis on finite element methods. The 1996 first edition has been used in a rather intensive two-semester course. -Book News, June 2010

  19. Probabilistic Structural Analysis Program

    Science.gov (United States)

    Pai, Shantaram S.; Chamis, Christos C.; Murthy, Pappu L. N.; Stefko, George L.; Riha, David S.; Thacker, Ben H.; Nagpal, Vinod K.; Mital, Subodh K.

    2010-01-01

    NASA/NESSUS 6.2c is a general-purpose, probabilistic analysis program that computes probability of failure and probabilistic sensitivity measures of engineered systems. Because NASA/NESSUS uses highly computationally efficient and accurate analysis techniques, probabilistic solutions can be obtained even for extremely large and complex models. Once the probabilistic response is quantified, the results can be used to support risk-informed decisions regarding reliability for safety-critical and one-of-a-kind systems, as well as for maintaining a level of quality while reducing manufacturing costs for larger-quantity products. NASA/NESSUS has been successfully applied to a diverse range of problems in aerospace, gas turbine engines, biomechanics, pipelines, defense, weaponry, and infrastructure. This program combines state-of-the-art probabilistic algorithms with general-purpose structural analysis and lifting methods to compute the probabilistic response and reliability of engineered structures. Uncertainties in load, material properties, geometry, boundary conditions, and initial conditions can be simulated. The structural analysis methods include non-linear finite-element methods, heat-transfer analysis, polymer/ceramic matrix composite analysis, monolithic (conventional metallic) materials life-prediction methodologies, boundary element methods, and user-written subroutines. Several probabilistic algorithms are available such as the advanced mean value method and the adaptive importance sampling method. NASA/NESSUS 6.2c is structured in a modular format with 15 elements.

  20. A PROOF Analysis Framework

    CERN Document Server

    Gonzalez Caballero, Isidro

    2012-01-01

    The analysis of the complex LHC data usually follows a standard path that aims at minimizing not only the amount of data but also the number of observables used. After a number of steps of slimming and skimming the data, the remaining few terabytes of ROOT files hold a selection of the events and a flat structure for the variables needed that can be more easily inspected and traversed in the final stages of the analysis. PROOF arises at this point as an efficient mechanism to distribute the analysis load by taking advantage of all the cores in modern CPUs through PROOF Lite, or by using PROOF Cluster or PROOF on Demand tools to build dynamic PROOF cluster on computing facilities with spare CPUs. However using PROOF at the level required for a serious analysis introduces some difficulties that may scare new adopters. We have developed the PROOF Analysis Framework (PAF) to facilitate the development of new analysis by uniformly exposing the PROOF related configurations across technologies and by taking care of ...

  1. INTERNAL ENVIRONMENT ANALYSIS TECHNIQUES

    Directory of Open Access Journals (Sweden)

    Caescu Stefan Claudiu

    2011-12-01

    Full Text Available Theme The situation analysis, as a separate component of the strategic planning, involves collecting and analysing relevant types of information on the components of the marketing environment and their evolution on the one hand and also on the organization’s resources and capabilities on the other. Objectives of the Research The main purpose of the study of the analysis techniques of the internal environment is to provide insight on those aspects that are of strategic importance to the organization. Literature Review The marketing environment consists of two distinct components, the internal environment that is made from specific variables within the organization and the external environment that is made from variables external to the organization. Although analysing the external environment is essential for corporate success, it is not enough unless it is backed by a detailed analysis of the internal environment of the organization. The internal environment includes all elements that are endogenous to the organization, which are influenced to a great extent and totally controlled by it. The study of the internal environment must answer all resource related questions, solve all resource management issues and represents the first step in drawing up the marketing strategy. Research Methodology The present paper accomplished a documentary study of the main techniques used for the analysis of the internal environment. Results The special literature emphasizes that the differences in performance from one organization to another is primarily dependant not on the differences between the fields of activity, but especially on the differences between the resources and capabilities and the ways these are capitalized on. The main methods of analysing the internal environment addressed in this paper are: the analysis of the organizational resources, the performance analysis, the value chain analysis and the functional analysis. Implications Basically such

  2. Biosensors for Cell Analysis.

    Science.gov (United States)

    Zhou, Qing; Son, Kyungjin; Liu, Ying; Revzin, Alexander

    2015-01-01

    Biosensors first appeared several decades ago to address the need for monitoring physiological parameters such as oxygen or glucose in biological fluids such as blood. More recently, a new wave of biosensors has emerged in order to provide more nuanced and granular information about the composition and function of living cells. Such biosensors exist at the confluence of technology and medicine and often strive to connect cell phenotype or function to physiological or pathophysiological processes. Our review aims to describe some of the key technological aspects of biosensors being developed for cell analysis. The technological aspects covered in our review include biorecognition elements used for biosensor construction, methods for integrating cells with biosensors, approaches to single-cell analysis, and the use of nanostructured biosensors for cell analysis. Our hope is that the spectrum of possibilities for cell analysis described in this review may pique the interest of biomedical scientists and engineers and may spur new collaborations in the area of using biosensors for cell analysis.

  3. SSC Engineering Analysis

    Science.gov (United States)

    Ryan, Harry; Junell, Justin; Albasini, Colby; O'Rourke, William; Le, Thang; Strain, Ted; Stiglets, Tim

    2011-01-01

    A package for the automation of the Engineering Analysis (EA) process at the Stennis Space Center has been customized. It provides the ability to assign and track analysis tasks electronically, and electronically route a task for approval. It now provides a mechanism to keep these analyses under configuration management. It also allows the analysis to be stored and linked to the engineering data that is needed to perform the analysis (drawings, etc.). PTC s (Parametric Technology Corp o ration) Windchill product was customized to allow the EA to be created, routed, and maintained under configuration management. Using Infoengine Tasks, JSP (JavaServer Pages), Javascript, a user interface was created within the Windchill product that allows users to create EAs. Not only does this interface allow users to create and track EAs, but it plugs directly into the out-ofthe- box ability to associate these analyses with other relevant engineering data such as drawings. Also, using the Windchill workflow tool, the Design and Data Management System (DDMS) team created an electronic routing process based on the manual/informal approval process. The team also added the ability for users to notify and track notifications to individuals about the EA. Prior to the Engineering Analysis creation, there was no electronic way of creating and tracking these analyses. There was also a feature that was added that would allow users to track/log e-mail notifications of the EA.

  4. Harmonic and geometric analysis

    CERN Document Server

    Citti, Giovanna; Pérez, Carlos; Sarti, Alessandro; Zhong, Xiao

    2015-01-01

    This book presents an expanded version of four series of lectures delivered by the authors at the CRM. Harmonic analysis, understood in a broad sense, has a very wide interplay with partial differential equations and in particular with the theory of quasiconformal mappings and its applications. Some areas in which real analysis has been extremely influential are PDE's and geometric analysis. Their foundations and subsequent developments made extensive use of the Calderón–Zygmund theory, especially the Lp inequalities for Calderón–Zygmund operators (Beurling transform and Riesz transform, among others) and the theory of Muckenhoupt weights.  The first chapter is an application of harmonic analysis and the Heisenberg group to understanding human vision, while the second and third chapters cover some of the main topics on linear and multilinear harmonic analysis. The last serves as a comprehensive introduction to a deep result from De Giorgi, Moser and Nash on the regularity of elliptic partial differen...

  5. Program risk analysis handbook

    Science.gov (United States)

    Batson, R. G.

    1987-01-01

    NASA regulations specify that formal risk analysis be performed on a program at each of several milestones. Program risk analysis is discussed as a systems analysis approach, an iterative process (identification, assessment, management), and a collection of techniques. These techniques, which range from extremely simple to complex network-based simulation, are described in this handbook in order to provide both analyst and manager with a guide for selection of the most appropriate technique. All program risk assessment techniques are shown to be based on elicitation and encoding of subjective probability estimates from the various area experts on a program. Techniques to encode the five most common distribution types are given. Then, a total of twelve distinct approaches to risk assessment are given. Steps involved, good and bad points, time involved, and degree of computer support needed are listed. Why risk analysis should be used by all NASA program managers is discussed. Tools available at NASA-MSFC are identified, along with commercially available software. Bibliography (150 entries) and a program risk analysis check-list are provided.

  6. Automated document analysis system

    Science.gov (United States)

    Black, Jeffrey D.; Dietzel, Robert; Hartnett, David

    2002-08-01

    A software application has been developed to aid law enforcement and government intelligence gathering organizations in the translation and analysis of foreign language documents with potential intelligence content. The Automated Document Analysis System (ADAS) provides the capability to search (data or text mine) documents in English and the most commonly encountered foreign languages, including Arabic. Hardcopy documents are scanned by a high-speed scanner and are optical character recognized (OCR). Documents obtained in an electronic format bypass the OCR and are copied directly to a working directory. For translation and analysis, the script and the language of the documents are first determined. If the document is not in English, the document is machine translated to English. The documents are searched for keywords and key features in either the native language or translated English. The user can quickly review the document to determine if it has any intelligence content and whether detailed, verbatim human translation is required. The documents and document content are cataloged for potential future analysis. The system allows non-linguists to evaluate foreign language documents and allows for the quick analysis of a large quantity of documents. All document processing can be performed manually or automatically on a single document or a batch of documents.

  7. Multiview Uncorrelated Discriminant Analysis.

    Science.gov (United States)

    Sun, Shiliang; Xie, Xijiong; Yang, Mo

    2016-12-01

    Multiview learning is more robust than single-view learning in many real applications. Canonical correlation analysis (CCA) is a popular technique to utilize information stemming from multiple feature sets. However, it does not exploit label information effectively. Later multiview linear discriminant analysis (MLDA) was proposed through combining CCA and linear discriminant analysis (LDA). Due to the successful application of uncorrelated LDA (ULDA), which seeks optimal discriminant features with minimum redundancy, we propose a new supervised learning method called multiview ULDA (MULDA) in this paper. This method combines the theory of ULDA with CCA. Then we adapt discriminant CCA (DCCA) instead of the CCA in MLDA and MULDA, and discuss about the effect of this modification. Furthermore, we generalize these methods to the nonlinear case by kernel-based learning techniques. The new method is called kernel multiview uncorrelated discriminant analysis (KMUDA). Then we modify kernel multiview discriminant analysis and KMUDA by replacing Kernel CCA with Kernel DCCA. Our methods are tested on different real datasets and compared with other state-of-the-art methods. Experimental results validate the effectiveness of our methods.

  8. Professionalizing Intelligence Analysis

    Directory of Open Access Journals (Sweden)

    James B. Bruce

    2015-09-01

    Full Text Available This article examines the current state of professionalism in national security intelligence analysis in the U.S. Government. Since the introduction of major intelligence reforms directed by the Intelligence Reform and Terrorism Prevention Act (IRTPA in December, 2004, we have seen notable strides in many aspects of intelligence professionalization, including in analysis. But progress is halting, uneven, and by no means permanent. To consolidate its gains, and if it is to continue improving, the U.S. intelligence community (IC should commit itself to accomplishing a new program of further professionalization of analysis to ensure that it will develop an analytic cadre that is fully prepared to deal with the complexities of an emerging multipolar and highly dynamic world that the IC itself is forecasting. Some recent reforms in intelligence analysis can be assessed against established standards of more fully developed professions; these may well fall short of moving the IC closer to the more fully professionalized analytical capability required for producing the kind of analysis needed now by the United States.

  9. Foundations of VISAR analysis.

    Energy Technology Data Exchange (ETDEWEB)

    Dolan, Daniel H.

    2006-06-01

    The Velocity Interferometer System for Any Reflector (VISAR) is a widely used diagnostic at Sandia National Laboratories. Although the operating principles of the VISAR are well established, recently deployed systems (such as the fast push-pull and air delay VISAR) require more careful consideration, and many common assumptions about VISAR are coming into question. This report presents a comprehensive review of VISAR analysis to address these issues. Detailed treatment of several interferometer configurations is given to identify important aspects of the operation and characterization of VISAR systems. The calculation of velocity from interferometer measurements is also described. The goal is to derive the standard VISAR analysis relationships, indicate when these relationships are valid, and provide alternative methods when the standard analysis fails.

  10. Badge Office Process Analysis

    Energy Technology Data Exchange (ETDEWEB)

    Haurykiewicz, John Paul [Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Dinehart, Timothy Grant [Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Parker, Robert Young [Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

    2016-05-12

    The purpose of this process analysis was to analyze the Badge Offices’ current processes from a systems perspective and consider ways of pursuing objectives set forth by SEC-PS, namely increased customer flow (throughput) and reduced customer wait times. Information for the analysis was gathered for the project primarily through Badge Office Subject Matter Experts (SMEs), and in-person observation of prevailing processes. Using the information gathered, a process simulation model was constructed to represent current operations and allow assessment of potential process changes relative to factors mentioned previously. The overall purpose of the analysis was to provide SEC-PS management with information and recommendations to serve as a basis for additional focused study and areas for potential process improvements in the future.

  11. Real mathematical analysis

    CERN Document Server

    Pugh, Charles C

    2015-01-01

    Based on an honors course taught by the author at UC Berkeley, this introduction to undergraduate real analysis gives a different emphasis by stressing the importance of pictures and hard problems. Topics include: a natural construction of the real numbers, four-dimensional visualization, basic point-set topology, function spaces, multivariable calculus via differential forms (leading to a simple proof of the Brouwer Fixed Point Theorem), and a pictorial treatment of Lebesgue theory. Over 150 detailed illustrations elucidate abstract concepts and salient points in proofs. The exposition is informal and relaxed, with many helpful asides, examples, some jokes, and occasional comments from mathematicians, such as Littlewood, Dieudonné, and Osserman. This book thus succeeds in being more comprehensive, more comprehensible, and more enjoyable, than standard introductions to analysis. New to the second edition of Real Mathematical Analysis is a presentation of Lebesgue integration done almost entirely using the un...

  12. Non-commutative analysis

    CERN Document Server

    Jorgensen, Palle

    2017-01-01

    The book features new directions in analysis, with an emphasis on Hilbert space, mathematical physics, and stochastic processes. We interpret 'non-commutative analysis' broadly to include representations of non-Abelian groups, and non-Abelian algebras; emphasis on Lie groups and operator algebras (C* algebras and von Neumann algebras.)A second theme is commutative and non-commutative harmonic analysis, spectral theory, operator theory and their applications. The list of topics includes shift invariant spaces, group action in differential geometry, and frame theory (over-complete bases) and their applications to engineering (signal processing and multiplexing), projective multi-resolutions, and free probability algebras.The book serves as an accessible introduction, offering a timeless presentation, attractive and accessible to students, both in mathematics and in neighboring fields.

  13. Budget impact analysis.

    Science.gov (United States)

    Leelahavarong, Pattara

    2014-05-01

    A budget impact analysis (BIA) is used to assess whether the adoption of a new health technology is affordable, given the resource and budget constraints of the context. Increasingly, BIAs are coming to be viewed as an important-if not essential-part of health technology assessment (HTA). BIA data is often examined in conjunction with cost-effectiveness analysis (CEA) data to help inform decisions makers when developing reimbursement policies within the resource constraints of their health care system. This article presents a review of existing BIA guidelines from around the world and makes some initial recommendations for the development of Thai BIA guidelines, as part of the newly-developed Economic Evaluation guidelines for Thailand. Initial recommendations include guidelines on appropriate analytic framework design, study design, perspective, scenarios for comparison, target population, costing and resource use, uncertainty analysis, and discounting.

  14. Neutron signal transfer analysis

    CERN Document Server

    Pleinert, H; Lehmann, E

    1999-01-01

    A new method called neutron signal transfer analysis has been developed for quantitative determination of hydrogenous distributions from neutron radiographic measurements. The technique is based on a model which describes the detector signal obtained in the measurement as a result of the action of three different mechanisms expressed by signal transfer functions. The explicit forms of the signal transfer functions are determined by Monte Carlo computer simulations and contain only the distribution as a variable. Therefore an unknown distribution can be determined from the detector signal by recursive iteration. This technique provides a simple and efficient tool for analysis of this type while also taking into account complex effects due to the energy dependency of neutron interaction and single and multiple scattering. Therefore this method provides an efficient tool for precise quantitative analysis using neutron radiography, as for example quantitative determination of moisture distributions in porous buil...

  15. The data analysis handbook

    CERN Document Server

    Frank, IE

    1994-01-01

    Analyzing observed or measured data is an important step in applied sciences. The recent increase in computer capacity has resulted in a revolution both in data collection and data analysis. An increasing number of scientists, researchers and students are venturing into statistical data analysis; hence the need for more guidance in this field, which was previously dominated mainly by statisticians. This handbook fills the gap in the range of textbooks on data analysis. Written in a dictionary format, it will serve as a comprehensive reference book in a rapidly growing field. However, this book is more structured than an ordinary dictionary, where each entry is a separate, self-contained entity. The authors provide not only definitions and short descriptions, but also offer an overview of the different topics. Therefore, the handbook can also be used as a companion to textbooks for undergraduate or graduate courses. 1700 entries are given in alphabetical order grouped into 20 topics and each topic is organized...

  16. Basic real analysis

    CERN Document Server

    Sohrab, Houshang H

    2014-01-01

    This expanded second edition presents the fundamentals and touchstone results of real analysis in full rigor, but in a style that requires little prior familiarity with proofs or mathematical language. The text is a comprehensive and largely self-contained introduction to the theory of real-valued functions of a real variable. The chapters on Lebesgue measure and integral have been rewritten entirely and greatly improved. They now contain Lebesgue’s differentiation theorem as well as his versions of the Fundamental Theorem(s) of Calculus. With expanded chapters, additional problems, and an expansive solutions manual, Basic Real Analysis, Second Edition, is ideal for senior undergraduates and first-year graduate students, both as a classroom text and a self-study guide. Reviews of first edition: The book is a clear and well-structured introduction to real analysis aimed at senior undergraduate and beginning graduate students. The prerequisites are few, but a certain mathematical sophistication is required. ....

  17. Behavior analysis in Brasil

    Directory of Open Access Journals (Sweden)

    João Cláudio Todorov

    2006-01-01

    Full Text Available The history of behavior analysis in Brazil began with the visit of Fred S. Keller as a FulbrightScholar to the University of São Paulo in 1961. Keller introduced Skinner works to the Brazilianpsychologists. His first assistant was Carolina Martuscelli Bori, then a social psychologistinfluenced by the work of Kurt Lewin. Initially guided by Keller, Carolina Bori was the majorforce in the diffusion of Behavior Analysis in Brazil, beginning with the psychology course ofthe University of Brasília, where the first course on Experimental Analysis of Behavior beganin August of 1964. Most of behavior analysts in Brazil today were students, directly or indirectly,of Carolina Bori. Several graduate programs throughout the country offer courses in behavioranalysis.

  18. Exercises in analysis

    CERN Document Server

    Gasiński, Leszek

    2016-01-01

    This second of two Exercises in Analysis volumes covers problems in five core topics of mathematical analysis: Function Spaces, Nonlinear and Multivalued Maps, Smooth and Nonsmooth Calculus, Degree Theory and Fixed Point Theory, and Variational and Topological Methods. Each of five topics corresponds to a different chapter with inclusion of the basic theory and accompanying main definitions and results, followed by suitable comments and remarks for better understanding of the material. Exercises/problems are presented for each topic, with solutions available at the end of each chapter. The entire collection of exercises offers a balanced and useful picture for the application surrounding each topic. This nearly encyclopedic coverage of exercises in mathematical analysis is the first of its kind and is accessible to a wide readership. Graduate students will find the collection of problems valuable in preparation for their preliminary or qualifying exams as well as for testing their deeper understanding of the ...

  19. COI Structural Analysis Presentation

    Science.gov (United States)

    Cline, Todd; Stahl, H. Philip (Technical Monitor)

    2001-01-01

    This report discusses the structural analysis of the Next Generation Space Telescope Mirror System Demonstrator (NMSD) developed by Composite Optics Incorporated (COI) in support of the Next Generation Space Telescope (NGST) project. The mirror was submitted to Marshall Space Flight Center (MSFC) for cryogenic testing and evaluation. Once at MSFC, the mirror was lowered to approximately 40 K and the optical surface distortions were measured. Alongside this experiment, an analytical model was developed and used to compare to the test results. A NASTRAN finite element model was provided by COI and a thermal model was developed from it. Using the thermal model, steady state nodal temperatures were calculated based on the predicted environment of the large cryogenic test chamber at MSFC. This temperature distribution was applied in the structural analysis to solve for the deflections of the optical surface. Finally, these deflections were submitted for optical analysis and comparison to the interferometer test data.

  20. Color Medical Image Analysis

    CERN Document Server

    Schaefer, Gerald

    2013-01-01

    Since the early 20th century, medical imaging has been dominated by monochrome imaging modalities such as x-ray, computed tomography, ultrasound, and magnetic resonance imaging. As a result, color information has been overlooked in medical image analysis applications. Recently, various medical imaging modalities that involve color information have been introduced. These include cervicography, dermoscopy, fundus photography, gastrointestinal endoscopy, microscopy, and wound photography. However, in comparison to monochrome images, the analysis of color images is a relatively unexplored area. The multivariate nature of color image data presents new challenges for researchers and practitioners as the numerous methods developed for monochrome images are often not directly applicable to multichannel images. The goal of this volume is to summarize the state-of-the-art in the utilization of color information in medical image analysis.

  1. Flow Injection Analysis

    DEFF Research Database (Denmark)

    Hansen, Elo Harald

    2004-01-01

    This chapter provides an introduction to automated chemical analysis, which essentially can be divided into two groups: batch assays, where the solution is stationary while the container is moved through a number of stations where various unit operations performed; and continuous-flow procedures......, where the system is stationary while the solution moves through a set of conduits in which all required manipulations are performed. Emphasis is placed on flow injection analysis (FIA) and its further developments, that is, sequential injection analysis (SIA) and the Lab-on-Valve (LOV) approach. Since...... FIA is based on the creation of a concentration gradient of the injected sample solution and on reproducible and precise timing of all events, it allows exploitation of a transient read-out. This in turn implies that not only does FIA allow the augmentation of existing analytical techniques...

  2. Mathematical analysis I

    CERN Document Server

    Zorich, Vladimir A

    2015-01-01

    VLADIMIR A. ZORICH is professor of mathematics at Moscow State University. His areas of specialization are analysis, conformal geometry, quasiconformal mappings, and mathematical aspects of thermodynamics. He solved the problem of global homeomorphism for space quasiconformal mappings. He holds a patent in the technology of mechanical engineering, and he is also known by his book Mathematical Analysis of Problems in the Natural Sciences . This second English edition of a very popular two-volume work presents a thorough first course in analysis, leading from real numbers to such advanced topics as differential forms on manifolds; asymptotic methods; Fourier, Laplace, and Legendre transforms; elliptic functions; and distributions. Especially notable in this course are the clearly expressed orientation toward the natural sciences and the informal exploration of the essence and the roots of the basic concepts and theorems of calculus. Clarity of exposition is matched by a wealth of instructive exercises, problems...

  3. Fuzzy data analysis

    CERN Document Server

    Bandemer, Hans

    1992-01-01

    Fuzzy data such as marks, scores, verbal evaluations, imprecise observations, experts' opinions and grey tone pictures, are quite common. In Fuzzy Data Analysis the authors collect their recent results providing the reader with ideas, approaches and methods for processing such data when looking for sub-structures in knowledge bases for an evaluation of functional relationship, e.g. in order to specify diagnostic or control systems. The modelling presented uses ideas from fuzzy set theory and the suggested methods solve problems usually tackled by data analysis if the data are real numbers. Fuzzy Data Analysis is self-contained and is addressed to mathematicians oriented towards applications and to practitioners in any field of application who have some background in mathematics and statistics.

  4. Analysis of Autopilot Behavior

    Science.gov (United States)

    Sherry, Lance; Polson, Peter; Feay, Mike; Palmer, Everett; Null, Cynthia H. (Technical Monitor)

    1998-01-01

    Aviation and cognitive science researchers have identified situations in which the pilot's expectations for behavior of autopilot avionics are not matched by the actual behavior of the avionics. These "automation surprises" have been attributed to differences between the pilot's model of the behavior of the avionics and the actual behavior encoded in the avionics software. A formal technique is described for the analysis and measurement of the behavior of the cruise pitch modes of a modern Autopilot. The analysis characterizes the behavior of the Autopilot as situation-action rules. The behavior of the cruise pitch mode logic for a contemporary modern Autopilot was found to include 177 rules, including Level Change (23), Vertical Speed (16), Altitude Capture (50), and Altitude Hold (88). These rules are determined based on the values of 62 inputs. Analysis of the rule-based model also shed light on the factors cited in the literature as contributors to "automation surprises."

  5. Real analysis on intervals

    CERN Document Server

    Choudary, A D R

    2014-01-01

    The book targets undergraduate and postgraduate mathematics students and helps them develop a deep understanding of mathematical analysis. Designed as a first course in real analysis, it helps students learn how abstract mathematical analysis solves mathematical problems that relate to the real world. As well as providing a valuable source of inspiration for contemporary research in mathematics, the book helps students read, understand and construct mathematical proofs, develop their problem-solving abilities and comprehend the importance and frontiers of computer facilities and much more. It offers comprehensive material for both seminars and independent study for readers with a basic knowledge of calculus and linear algebra. The first nine chapters followed by the appendix on the Stieltjes integral are recommended for graduate students studying probability and statistics, while the first eight chapters followed by the appendix on dynamical systems will be of use to students of biology and environmental scie...

  6. Digital Fourier analysis fundamentals

    CERN Document Server

    Kido, Ken'iti

    2015-01-01

    This textbook is a thorough, accessible introduction to digital Fourier analysis for undergraduate students in the sciences. Beginning with the principles of sine/cosine decomposition, the reader walks through the principles of discrete Fourier analysis before reaching the cornerstone of signal processing: the Fast Fourier Transform. Saturated with clear, coherent illustrations, "Digital Fourier Analysis - Fundamentals" includes practice problems and thorough Appendices for the advanced reader. As a special feature, the book includes interactive applets (available online) that mirror the illustrations.  These user-friendly applets animate concepts interactively, allowing the user to experiment with the underlying mathematics. For example, a real sine signal can be treated as a sum of clockwise and counter-clockwise rotating vectors. The applet illustration included with the book animates the rotating vectors and the resulting sine signal. By changing parameters such as amplitude and frequency, the reader ca...

  7. Western blot analysis.

    Science.gov (United States)

    Hirano, Seishiro

    2012-01-01

    Electrophoresis and the following western blot analysis are indispensable to investigate biochemical changes in cells and tissues exposed to nanoparticles or nanomaterials. Proteins should be extracted from the cells and tissues using a proper method, especially when phosphorylated proteins are to be detected. It is important to select a good blocking agent and an appropriate pair of primary and peroxidase-tagged secondary antibodies to obtain good results in western blot analysis. One thing that may be specific to nanomaterials, and that you should keep in mind, is that some proteins may be adsorbed on the surface of particulate nanomaterials. In this chapter the whole process of western blot analysis, from sample preparation to quantitative measurement of target proteins, is described.

  8. Analysis of Waves

    DEFF Research Database (Denmark)

    Frigaard, Peter; Andersen, Thomas Lykke

    The present book describes the most important aspects of wave analysis techniques applied to physical model tests. Moreover, the book serves as technical documentation for the wave analysis software WaveLab 3, cf. Aalborg University (2012). In that respect it should be mentioned that supplementary...... to the present technical documentation exists also the online help document describing the WaveLab software in detail including all the inputs and output fields. In addition to the two main authors also Tue Hald, Jacob Helm-Petersen and Morten Møller Jakobsen have contributed to the note. Their input is highly...... acknowledged. The outline of the book is as follows: • Chapter 2 and 3 describes analysis of waves in time and frequency domain. • Chapter 4 and 5 describes the separation of incident and reflected waves for the two-dimensional case. • Chapter 6 describes the estimation of the directional spectra which also...

  9. Per Object statistical analysis

    DEFF Research Database (Denmark)

    2008-01-01

    This RS code is to do Object-by-Object analysis of each Object's sub-objects, e.g. statistical analysis of an object's individual image data pixels. Statistics, such as percentiles (so-called "quartiles") are derived by the process, but the return of that can only be a Scene Variable, not an Object...... an analysis of the values of the object's pixels in MS-Excel. The shell of the proceedure could also be used for purposes other than just the derivation of Object - Sub-object statistics, e.g. rule-based assigment processes....... Variable. This procedure was developed in order to be able to export objects as ESRI shape data with the 90-percentile of the Hue of each object's pixels as an item in the shape attribute table. This procedure uses a sub-level single pixel chessboard segmentation, loops for each of the objects...

  10. Mathematical analysis II

    CERN Document Server

    Canuto, Claudio

    2015-01-01

    The purpose of the volume is to provide a support textbook for a second lecture course on Mathematical Analysis. The contents are organised to suit, in particular, students of Engineering, Computer Science and Physics, all areas in which mathematical tools play a crucial role. The basic notions and methods concerning integral and differential calculus for multivariable functions, series of functions and ordinary differential equations are presented in a manner that elicits critical reading and prompts a hands-on approach to concrete applications. The pedagogical layout echoes the one used in the companion text Mathematical Analysis I. The book’s structure has a specifically-designed modular nature, which allows for great flexibility in the preparation of a lecture course on Mathematical Analysis. The style privileges clarity in the exposition and a linear progression through the theory. The material is organised on two levels. The first, reflected in this book, allows students to grasp the essential ideas, ...

  11. Pitfalls of exergy analysis

    CERN Document Server

    Vágner, Petr; Maršík, František

    2016-01-01

    The well-known Gouy-Stodola theorem states that a device produces maximum useful power when working reversibly, that is with no entropy production inside the device. This statement then leads to a method of thermodynamic optimization based on entropy production minimization. Exergy destruction (difference between exergy of fuel and exhausts) is also given by entropy production inside the device. Therefore, assessing efficiency of a device by exergy analysis is also based on the Gouy-Stodola theorem. However, assumptions that had led to the Gouy-Stodola theorem are not satisfied in several optimization scenarios, e.g. non-isothermal steady-state fuel cells, where both entropy production minimization and exergy analysis should be used with caution. We demonstrate, using non-equilibrium thermodynamics, a few cases where entropy production minimization and exergy analysis should not be applied.

  12. Applied multivariate statistical analysis

    CERN Document Server

    Härdle, Wolfgang Karl

    2015-01-01

    Focusing on high-dimensional applications, this 4th edition presents the tools and concepts used in multivariate data analysis in a style that is also accessible for non-mathematicians and practitioners.  It surveys the basic principles and emphasizes both exploratory and inferential statistics; a new chapter on Variable Selection (Lasso, SCAD and Elastic Net) has also been added.  All chapters include practical exercises that highlight applications in different multivariate data analysis fields: in quantitative financial studies, where the joint dynamics of assets are observed; in medicine, where recorded observations of subjects in different locations form the basis for reliable diagnoses and medication; and in quantitative marketing, where consumers’ preferences are collected in order to construct models of consumer behavior.  All of these examples involve high to ultra-high dimensions and represent a number of major fields in big data analysis. The fourth edition of this book on Applied Multivariate ...

  13. Principles of harmonic analysis

    CERN Document Server

    Deitmar, Anton

    2014-01-01

    This book offers a complete and streamlined treatment of the central principles of abelian harmonic analysis: Pontryagin duality, the Plancherel theorem and the Poisson summation formula, as well as their respective generalizations to non-abelian groups, including the Selberg trace formula. The principles are then applied to spectral analysis of Heisenberg manifolds and Riemann surfaces. This new edition contains a new chapter on p-adic and adelic groups, as well as a complementary section on direct and projective limits. Many of the supporting proofs have been revised and refined. The book is an excellent resource for graduate students who wish to learn and understand harmonic analysis and for researchers seeking to apply it.

  14. Life Cycle Inventory Analysis

    DEFF Research Database (Denmark)

    Bjørn, Anders; Moltesen, Andreas; Laurent, Alexis

    2017-01-01

    of different sources. The output is a compiled inventory of elementary flows that is used as basis of the subsequent life cycle impact assessment phase. This chapter teaches how to carry out this task through six steps: (1) identifying processes for the LCI model of the product system; (2) planning......The inventory analysis is the third and often most time-consuming part of an LCA. The analysis is guided by the goal and scope definition, and its core activity is the collection and compilation of data on elementary flows from all processes in the studied product system(s) drawing on a combination...

  15. Notes on functional analysis

    CERN Document Server

    Bhatia, Rajendra

    2009-01-01

    These notes are a record of a one semester course on Functional Analysis given by the author to second year Master of Statistics students at the Indian Statistical Institute, New Delhi. Students taking this course have a strong background in real analysis, linear algebra, measure theory and probability, and the course proceeds rapidly from the definition of a normed linear space to the spectral theorem for bounded selfadjoint operators in a Hilbert space. The book is organised as twenty six lectures, each corresponding to a ninety minute class session. This may be helpful to teachers planning a course on this topic. Well prepared students can read it on their own.

  16. Analysis Preservation in ATLAS

    CERN Document Server

    Cranmer, Kyle; The ATLAS collaboration; Jones, Roger; South, David

    2015-01-01

    Long before data taking ATLAS established a policy that all analyses need to be preserved. In the initial data-taking period, this has been achieved by various tools and techniques. ATLAS is now reviewing the analysis preservation with the aim to bring coherence and robustness to the process and with a clearer view of the level of reproducibility that is reasonably achievable. The secondary aim is to reduce the load on the analysts. Once complete, this will serve for our internal preservation needs but also provide a basis for any subsequent sharing of analysis results with external parties.

  17. Contamination Analysis Tools

    Science.gov (United States)

    Brieda, Lubos

    2015-01-01

    This talk presents 3 different tools developed recently for contamination analysis:HTML QCM analyzer: runs in a web browser, and allows for data analysis of QCM log filesJava RGA extractor: can load in multiple SRS.ana files and extract pressure vs. time dataC++ Contamination Simulation code: 3D particle tracing code for modeling transport of dust particulates and molecules. Uses residence time to determine if molecules stick. Particulates can be sampled from IEST-STD-1246 and be accelerated by aerodynamic forces.

  18. Digital image analysis

    DEFF Research Database (Denmark)

    Riber-Hansen, Rikke; Vainer, Ben; Steiniche, Torben

    2012-01-01

    Digital image analysis (DIA) is increasingly implemented in histopathological research to facilitate truly quantitative measurements, decrease inter-observer variation and reduce hands-on time. Originally, efforts were made to enable DIA to reproduce manually obtained results on histological slides...... optimized for light microscopy and the human eye. With improved technical methods and the acknowledgement that computerized readings are different from analysis by human eye, recognition has been achieved that to really empower DIA, histological slides must be optimized for the digital 'eye...... reproducibility, application of stereology-based quantitative measurements, time consumption, optimization of histological slides, regions of interest selection and recent developments in staining and imaging techniques....

  19. Flight Dynamics Analysis Branch

    Science.gov (United States)

    Stengle, Tom; Flores-Amaya, Felipe

    2000-01-01

    This report summarizes the major activities and accomplishments carried out by the Flight Dynamics Analysis Branch (FDAB), Code 572, in support of flight projects and technology development initiatives in fiscal year 2000. The report is intended to serve as a summary of the type of support carried out by the FDAB, as well as a concise reference of key accomplishments and mission experience derived from the various mission support roles. The primary focus of the FDAB is to provide expertise in the disciplines of flight dynamics, spacecraft trajectory, attitude analysis, and attitude determination and control. The FDAB currently provides support for missions and technology development projects involving NASA, government, university, and private industry.

  20. Structured Analysis - IDEF0

    DEFF Research Database (Denmark)

    Larsen, Michael Holm

    1999-01-01

    This note introduces the IDEF0 modelling language (semantics and syntax), and associated rules and techniques, for developing structured graphical representations of a system or enterprise. Use of this standard for IDEF0 permits the construction of models comprising system functions (activities...... that require a modelling technique for the analysis, development, re-engineering, integration, or acquisition of information systems; and incorporate a systems or enterprise modelling technique into a business process analysis or software engineering methodology.This note is a summary of the Standard...

  1. Harmonic analysis and applications

    CERN Document Server

    Heil, Christopher

    2007-01-01

    This self-contained volume in honor of John J. Benedetto covers a wide range of topics in harmonic analysis and related areas. These include weighted-norm inequalities, frame theory, wavelet theory, time-frequency analysis, and sampling theory. The chapters are clustered by topic to provide authoritative expositions that will be of lasting interest. The original papers collected are written by prominent researchers and professionals in the field. The book pays tribute to John J. Benedetto's achievements and expresses an appreciation for the mathematical and personal inspiration he has given to

  2. Introduction to real analysis

    CERN Document Server

    Schramm, Michael J

    2008-01-01

    This text forms a bridge between courses in calculus and real analysis. It focuses on the construction of mathematical proofs as well as their final content. Suitable for upper-level undergraduates and graduate students of real analysis, it also provides a vital reference book for advanced courses in mathematics.The four-part treatment begins with an introduction to basic logical structures and techniques of proof, including discussions of the cardinality concept and the algebraic and order structures of the real and rational number systems. Part Two presents in-depth examinations of the compl

  3. Data analysis using SAS

    CERN Document Server

    Peng, Chao-Ying Joanne

    2008-01-01

    "Peng provides an excellent overview of data analysis using the powerful statistical software package SAS. This book is quite appropriate as a self-placed tutorial for researchers, as well as a textbook or supplemental workbook for data analysis courses such as statistics or research methods. Peng provides detailed coverage of SAS capabilities using step-by-step procedures and includes numerous comprehensive graphics and figures, as well as SAS printouts. Readers do not need a background in computer science or programming. Includes numerous examples in education, health sciences, and business.

  4. Highdimensional data analysis

    CERN Document Server

    Cai, Tony

    2010-01-01

    Over the last few years, significant developments have been taking place in highdimensional data analysis, driven primarily by a wide range of applications in many fields such as genomics and signal processing. In particular, substantial advances have been made in the areas of feature selection, covariance estimation, classification and regression. This book intends to examine important issues arising from highdimensional data analysis to explore key ideas for statistical inference and prediction. It is structured around topics on multiple hypothesis testing, feature selection, regression, cla

  5. Foundations of stochastic analysis

    CERN Document Server

    Rao, M M; Lukacs, E

    1981-01-01

    Foundations of Stochastic Analysis deals with the foundations of the theory of Kolmogorov and Bochner and its impact on the growth of stochastic analysis. Topics covered range from conditional expectations and probabilities to projective and direct limits, as well as martingales and likelihood ratios. Abstract martingales and their applications are also discussed. Comprised of five chapters, this volume begins with an overview of the basic Kolmogorov-Bochner theorem, followed by a discussion on conditional expectations and probabilities containing several characterizations of operators and mea

  6. Analysis of Design Documentation

    DEFF Research Database (Denmark)

    Hansen, Claus Thorp

    1998-01-01

    has been established where we seek to identify useful design work patterns by retrospective analyses of documentation created during design projects. This paper describes the analysis method, a tentatively defined metric to evaluate identified work patterns, and presents results from the first......In design practice a process where a satisfactory solution is created within limited resources is required. However, since the design process is not well understood, research into how engineering designers actually solve design problems is needed. As a contribution to that end a research project...... analysis accomplished....

  7. Real Time Text Analysis

    Science.gov (United States)

    Senthilkumar, K.; Ruchika Mehra Vijayan, E.

    2017-11-01

    This paper aims to illustrate real time analysis of large scale data. For practical implementation we are performing sentiment analysis on live Twitter feeds for each individual tweet. To analyze sentiments we will train our data model on sentiWordNet, a polarity assigned wordNet sample by Princeton University. Our main objective will be to efficiency analyze large scale data on the fly using distributed computation. Apache Spark and Apache Hadoop eco system is used as distributed computation platform with Java as development language

  8. Introduction to complex analysis

    CERN Document Server

    Priestley, H A

    2003-01-01

    Complex analysis is a classic and central area of mathematics, which is studied and exploited in a range of important fields, from number theory to engineering. Introduction to Complex Analysis was first published in 1985, and for this much awaited second edition the text has been considerably expanded, while retaining the style of the original. More detailed presentation is given of elementary topics, to reflect the knowledge base of current students. Exercise sets have beensubstantially revised and enlarged, with carefully graded exercises at the end of each chapter.This is the latest additi

  9. Environmental analysis support

    Energy Technology Data Exchange (ETDEWEB)

    Miller, R.L.

    1996-06-01

    Activities in environmental analysis support included assistance to the Morgantown and Pittsburgh Energy Technology Centers (METC and PETC) in reviewing and preparing documents required by the National Environmental Policy Act (NEPA) for projects selected for the Clean Coal Technology (CCT) Program. An important activity was the preparation for METC of a final Environmental Assessment (EA) for the proposed Externally Fired Combined Cycle (EFCC) Project in Warren, Pennsylvania. In addition, a post-project environmental analysis was prepared for PETC to evaluate the Demonstration of Advanced Combustion Techniques for a Tangentially-Fired Boiler in Lynn Haven, Florida.

  10. Associative Analysis in Statistics

    Directory of Open Access Journals (Sweden)

    Mihaela Muntean

    2015-03-01

    Full Text Available In the last years, the interest in technologies such as in-memory analytics and associative search has increased. This paper explores how you can use in-memory analytics and an associative model in statistics. The word “associative” puts the emphasis on understanding how datasets relate to one another. The paper presents the main characteristics of “associative” data model. Also, the paper presents how to design an associative model for labor market indicators analysis. The source is the EU Labor Force Survey. Also, this paper presents how to make associative analysis.

  11. Gait Analysis Laboratory

    Science.gov (United States)

    1976-01-01

    Complete motion analysis laboratory has evolved out of analyzing walking patterns of crippled children at Stanford Children's Hospital. Data is collected by placing tiny electrical sensors over muscle groups of child's legs and inserting step-sensing switches in soles of shoes. Miniature radio transmitters send signals to receiver for continuous recording of abnormal walking pattern. Engineers are working to apply space electronics miniaturization techniques to reduce size and weight of telemetry system further as well as striving to increase signal bandwidth so analysis can be performed faster and more accurately using a mini-computer.

  12. Signal flow analysis

    CERN Document Server

    Abrahams, J R; Hiller, N

    1965-01-01

    Signal Flow Analysis provides information pertinent to the fundamental aspects of signal flow analysis. This book discusses the basic theory of signal flow graphs and shows their relation to the usual algebraic equations.Organized into seven chapters, this book begins with an overview of properties of a flow graph. This text then demonstrates how flow graphs can be applied to a wide range of electrical circuits that do not involve amplification. Other chapters deal with the parameters as well as circuit applications of transistors. This book discusses as well the variety of circuits using ther

  13. Analysis in Euclidean space

    CERN Document Server

    Hoffman, Kenneth

    2007-01-01

    Developed for an introductory course in mathematical analysis at MIT, this text focuses on concepts, principles, and methods. Its introductions to real and complex analysis are closely formulated, and they constitute a natural introduction to complex function theory.Starting with an overview of the real number system, the text presents results for subsets and functions related to Euclidean space of n dimensions. It offers a rigorous review of the fundamentals of calculus, emphasizing power series expansions and introducing the theory of complex-analytic functions. Subsequent chapters cover seq

  14. Beginning statistics with data analysis

    CERN Document Server

    Mosteller, Frederick; Rourke, Robert EK

    2013-01-01

    This introduction to the world of statistics covers exploratory data analysis, methods for collecting data, formal statistical inference, and techniques of regression and analysis of variance. 1983 edition.

  15. Authentic professional development: Key to quality service delivery ...

    African Journals Online (AJOL)

    The Actuarial Society of South Africa ('Actuarial Society') requires its members to honour their professional promise to deliver specialist and up-to-date actuarial expertise that is ethical and subject to professional oversight. The purpose of this study is to investigate how the Actuarial Society can encourage its members to ...

  16. Systems analysis - independent analysis and verification

    Energy Technology Data Exchange (ETDEWEB)

    DiPietro, J.P.; Skolnik, E.G.; Badin, J.S. [Energetics, Inc., Columbia, MD (United States)

    1996-10-01

    The Hydrogen Program of the U.S. Department of Energy (DOE) funds a portfolio of activities ranging from conceptual research to pilot plant testing. The long-term research projects support DOE`s goal of a sustainable, domestically based energy system, and the development activities are focused on hydrogen-based energy systems that can be commercially viable in the near-term. Energetics develops analytic products that enable the Hydrogen Program Manager to assess the potential for near- and long-term R&D activities to satisfy DOE and energy market criteria. This work is based on a pathway analysis methodology. The authors consider an energy component (e.g., hydrogen production from biomass gasification, hybrid hydrogen internal combustion engine (ICE) vehicle) within a complete energy system. The work involves close interaction with the principal investigators to ensure accurate representation of the component technology. Comparisons are made with the current cost and performance of fossil-based and alternative renewable energy systems, and sensitivity analyses are conducted to determine the effect of changes in cost and performance parameters on the projects` viability.

  17. Proteoglycan isolation and analysis

    DEFF Research Database (Denmark)

    Woods, A; Couchman, J R

    2001-01-01

    Proteoglycans can be difficult molecules to isolate and analyze due to large mass, charge, and tendency to aggregate or form macromolecular complexes. This unit describes detailed methods for purification of matrix, cell surface, and cytoskeleton-linked proteoglycans. Methods for analysis...

  18. Discourse Analysis Today.

    Science.gov (United States)

    Scheu, Dagmar, Ed.; Lopez-Maestre, M. D., Ed.

    2003-01-01

    This collection of articles includes: "Introduction: Discourse Analysis Today" (Dagmar Schue and M.D. Lopez-Maestre); "The Metaphorical and Metonymic Understanding of the Trinitarian Dogma" (Antonio Barcelona); "Symmetry as Conceptual Metaphor in Walker's The Color Purple" (Elena Tapia); "And She's Like it's…

  19. Generic flux coupling analysis

    NARCIS (Netherlands)

    A.C. Reimers (Arne); Y. Goldstein; A. Bockmayr

    2015-01-01

    htmlabstractFlux coupling analysis (FCA) has become a useful tool for aiding metabolic reconstructions and guiding genetic manipulations. Originally, it was introduced for constraint-based models of metabolic networks that are based on the steady-state assumption. Recently, we have shown that the

  20. URBAN EDUCATION SYSTEMS ANALYSIS.

    Science.gov (United States)

    CLARK, STEPHEN C.; AND OTHERS

    ANALYSIS OF URBAN EDUCATIONAL SYSTEMS MAY BE ACHIEVED BY USE OF AN ANALYTICAL MODEL. THE MODEL MAY BE USED IN DECISION-MAKING REGARDING SCHOOL LOCATION, ENROLLMENT, FACILITIES, ORGANIZATION, PROGRAMS AND COSTS. KNOWN DATA SUCH AS MONIES AVAILABLE, STAFF ALLOCATION, AND CURRENT SCHOOL PLANT ARE INTRODUCED INTO THE MODEL. IN THE STRUCTURE OF THE…

  1. Strictness and Totality Analysis

    DEFF Research Database (Denmark)

    Solberg, K. L.; Nielson, Hanne Riis; Nielson, Flemming

    1998-01-01

    We define a novel inference system for strictness and totality analysis for the simply-typed lazy lambda-calculus with constants and fixpoints. Strictness information identifies those terms that definitely denote bottom (i.e. do not evaluate to WHNF) whereas totality information identifies those ...

  2. Local Noncollinear Spin Analysis.

    Science.gov (United States)

    Abate, Bayileyegn A; Joshi, Rajendra P; Peralta, Juan E

    2017-12-12

    In this work, we generalize the local spin analysis of Clark and Davidson [J. Chem. Phys. 2001 115 (16), 7382] for the partitioning of the expectation value of the molecular spin square operator, ⟨Ŝ 2 ⟩, into atomic contributions, ⟨Ŝ A ·Ŝ B ⟩, to the noncollinear spin case in the framework of density functional theory (DFT). We derive the working equations, and we show applications to the analysis of the noncollinear spin solutions of typical spin-frustrated systems and to the calculation of magnetic exchange couplings. In the former case, we employ the triangular H 3 He 3 test molecule and a Mn 3 complex to show that the local spin analysis provides additional information that complements the standard one-particle spin population analysis. For the calculation of magnetic exchange couplings, J AB , we employ the local spin partitioning to extract ⟨Ŝ A ·Ŝ B ⟩ as a function of the interatomic spin orientation given by the angle θ. This, combined with the dependence of the electronic energy with θ, provides a methodology to extract J AB from DFT calculations that, in contrast to conventional energy differences based methods, does not require the use of ad hoc S A and S B values.

  3. Multiphasic analysis of growth

    NARCIS (Netherlands)

    Koops, W.J.

    1989-01-01

    The central theme of this thesis is the mathematical analysis of growth in animals, based on the theory of multiphasic growth. Growth in biological terms is related to increase in size and shape. This increase is determined by internal (genetical) and external (environmental) factors. Well

  4. Introductory real analysis

    CERN Document Server

    Kolmogorov, A N; Silverman, Richard A

    1975-01-01

    Self-contained and comprehensive, this elementary introduction to real and functional analysis is readily accessible to those with background in advanced calculus. It covers basic concepts and introductory principles in set theory, metric spaces, topological and linear spaces, linear functionals and linear operators, and much more. 350 problems. 1970 edition.

  5. Russian Language Analysis Project

    Science.gov (United States)

    Serianni, Barbara; Rethwisch, Carolyn

    2011-01-01

    This paper is the result of a language analysis research project focused on the Russian Language. The study included a diverse literature review that included published materials as well as online sources in addition to an interview with a native Russian speaker residing in the United States. Areas of study include the origin and history of the…

  6. The Contrastive Analysis Hypothesis.

    Science.gov (United States)

    Wardhaugh, Ronald

    The claim that the best language teaching materials are based on a contrast of the two competing linguistic systems has long been a popular one in language teaching. It exists in strong and weak versions, the strong one arising from evidence from the availability of some kind of metatheory of contrastive analysis and the weak from evidence from…

  7. Introductory complex analysis

    CERN Document Server

    Silverman, Richard A

    1984-01-01

    A shorter version of A. I. Markushevich's masterly three-volume Theory of Functions of a Complex Variable, this edition is appropriate for advanced undergraduate and graduate courses in complex analysis. Numerous worked-out examples and more than 300 problems, some with hints and answers, make it suitable for independent study. 1967 edition.

  8. A landscape analysis plan

    Science.gov (United States)

    Nancy E. Fleenor

    2002-01-01

    A Landscape Analysis Plan (LAP) sets out broad guidelines for project development within boundaries of the Kings River Sustainable Forest Ecosystems Project. The plan must be a dynamic, living document, subject to change as new information arises over the course of this very long-term project (several decades). Two watersheds, each of 32,000 acres, were dedicated to...

  9. Applied Behavior Analysis

    Science.gov (United States)

    Szapacs, Cindy

    2006-01-01

    Teaching strategies that work for typically developing children often do not work for those diagnosed with an autism spectrum disorder. However, teaching strategies that work for children with autism do work for typically developing children. In this article, the author explains how the principles and concepts of Applied Behavior Analysis can be…

  10. Learning Haskell data analysis

    CERN Document Server

    Church, James

    2015-01-01

    If you are a developer, analyst, or data scientist who wants to learn data analysis methods using Haskell and its libraries, then this book is for you. Prior experience with Haskell and a basic knowledge of data science will be beneficial.

  11. a meta-analysis

    Indian Academy of Sciences (India)

    Yougen Wu

    2017-12-20

    Dec 20, 2017 ... 2009; Kull et al. 2009; Smith et al. 2009;. Agueda et al. 2010; Koek et al. 2010; Marozik et al. 2013). Presently, there is no meta-analysis focussed on the rela- tionship between LCT 13910 C/T gene polymorphism and bone density and fracture risk across different studies. Therefore, it is important to perform ...

  12. Holographic analysis of photopolymers

    Science.gov (United States)

    Sullivan, Amy C.; Alim, Marvin D.; Glugla, David J.; McLeod, Robert R.

    2017-05-01

    Two-beam holographic exposure and subsequent monitoring of the time-dependent first-order Bragg diffraction is a common method for investigating the refractive index response of holographic photopolymers for a range of input writing conditions. The experimental set up is straightforward, and Kogelnik's well-known coupled wave theory (CWT)[1] can be used to separate measurements of the change in index of refraction (Δn) and the thickness of transmission and reflection holograms. However, CWT assumes that the hologram is written and read out with a plane wave and that the hologram is uniform in both the transverse and depth dimensions, assumptions that are rarely valid in practical holographic testing. The effect of deviations from these assumptions on the measured thickness and Δn become more pronounced for over-modulated exposures. As commercial and research polymers reach refractive index modulations on the order of 10-2, even relatively thin (material analysis must be carefully evaluated in this regime. We present a study of the effects of the finite Gaussian write and read beams on the CWT analysis of photopolymer materials and discuss what intuition this can give us about the effect other non-uniformities, such as mechanical stresses and significant absorption of the write beam, will have on the analysis of the maximum attainable refractive index in a material system. We use this analysis to study a model high Δn two-stage photopolymer holographic material using both transmission and reflection holograms.

  13. On frame multiresolution analysis

    DEFF Research Database (Denmark)

    Christensen, Ole

    2003-01-01

    We use the freedom in frame multiresolution analysis to construct tight wavelet frames (even in the case where the refinable function does not generate a tight frame). In cases where a frame multiresolution does not lead to a construction of a wavelet frame we show how one can nevertheless...

  14. Text analysis in R

    NARCIS (Netherlands)

    Welbers, K.; van Atteveldt, W.H.; Benoit, K.

    2017-01-01

    Computational text analysis has become an exciting research field with many applications in communication research. It can be a difficult method to apply, however, because it requires knowledge of various techniques, and the software required to perform most of these techniques is not readily

  15. Analysis of indentation creep

    Science.gov (United States)

    Don S. Stone; Joseph E. Jakes; Jonathan Puthoff; Abdelmageed A. Elmustafa

    2010-01-01

    Finite element analysis is used to simulate cone indentation creep in materials across a wide range of hardness, strain rate sensitivity, and work-hardening exponent. Modeling reveals that the commonly held assumption of the hardness strain rate sensitivity (mΗ) equaling the flow stress strain rate sensitivity (mσ...

  16. Texture analysis of

    NARCIS (Netherlands)

    Lubsch, A.; Timmermans, K.

    2017-01-01

    Texture analysis is a method to test the physical properties of a material by tension and compression. The growing interest in commercialisation of seaweeds for human food has stimulated research into the physical properties of seaweed tissue. These are important parameters for the survival of

  17. Visual Interactive Analysis

    DEFF Research Database (Denmark)

    Kirchmeier-Andersen, Sabine; Møller Christensen, Jakob; Lihn Jensen, Bente

    2004-01-01

    This article presents the latest version of VIA (version 3.0). The development of the program was initiated by a demand for more systematic training of language analysis in high schools and universities. The system is now web-based, which enables teachers and students to share exercises across th...

  18. Mathematical analysis in India

    Indian Academy of Sciences (India)

    Mathematics being too vast a canvas, this writing has been broken down further into sub-disciplines. More speci- fically, regarding work in mathematical analysis, three people – namely Alladi Sitaram, V S Sunder and M Vanninathan – were ... in varied forms and at various levels of serious- ness. Thus you will find some ...

  19. ATLAS Distributed Analysis Tools

    CERN Document Server

    Gonzalez de la Hoz, Santiago; Liko, Dietrich

    2008-01-01

    The ATLAS production system has been successfully used to run production of simulation data at an unprecedented scale. Up to 10000 jobs were processed in one day. The experiences obtained operating the system on several grid flavours was essential to perform a user analysis using grid resources. First tests of the distributed analysis system were then performed. In the preparation phase data was registered in the LHC File Catalog (LFC) and replicated in external sites. For the main test, few resources were used. All these tests are only a first step towards the validation of the computing model. The ATLAS management computing board decided to integrate the collaboration efforts in distributed analysis in only one project, GANGA. The goal is to test the reconstruction and analysis software in a large scale Data production using Grid flavors in several sites. GANGA allows trivial switching between running test jobs on a local batch system and running large-scale analyses on the Grid; it provides job splitting a...

  20. Linear Regression Analysis

    CERN Document Server

    Seber, George A F

    2012-01-01

    Concise, mathematically clear, and comprehensive treatment of the subject.* Expanded coverage of diagnostics and methods of model fitting.* Requires no specialized knowledge beyond a good grasp of matrix algebra and some acquaintance with straight-line regression and simple analysis of variance models.* More than 200 problems throughout the book plus outline solutions for the exercises.* This revision has been extensively class-tested.