Sample records for case history approach

  1. Case Histories of Landslide Impact: A Database-driven Approach

    Klose, Martin; Damm, Bodo


    Fundamental understanding of landslide risk requires in-depth knowledge of how landslides have impacted society in the past (e.g., Corominas et al., 2014). A key to obtain insights into the evolution of landslide risk at single facilities of critical infrastructures are case histories of landslide impact. The purpose of such historical analyses is to inform about the site-specific interactions between landslides and land-use activity. Case histories support correlating landslide events and associated damages with multiple control variables of landslide risk, including (i) previous construction works, (ii) hazard awareness, (iii) the type of structure or its material properties, and (iv) measures of post-disaster mitigation. It is a key advantage of case histories to provide an overview of the changes in the exposure and vulnerability of infrastructures over time. Their application helps to learn more about changing patterns in risk culture and the effectiveness of repair or prevention measures (e.g., Klose et al., 2014). Case histories of landslide impact are developed on the basis of information extracted from landslide databases. The use of path diagrams and illustrated flowcharts as data modeling techniques is aimed at structuring, condensing, and visualizing complex historical data sets on landslide activity and land-use. Much of the scientific potential of case histories simply depends on the quality of available database information. Landslide databases relying on a bottom-up approach characterized by targeted local data specification are optimally suited for historical impact analyses. Combined with systematic retrieval, extraction, and integration of data from multiple sources, landslide databases constitute a valuable tool for developing case histories that enable to open a whole new window on the study of landslide impacts (e.g., Damm and Klose, 2014). The present contribution introduces such a case history for a well-known landslide site at a heavily

  2. Toxicity alarm: Case history

    In late fall 1991, the Novacor petrochemical plant near Joffre, Alberta experienced a toxicity alarm, the first since its startup 14 years ago. Fish exposed to a normal toxicity test were stressed within 2 h and showed 100% mortality after 24 h. A history of the events leading up to, during, and after the toxicity alarm is presented. The major effluent sources were three cooling water systems. Although these sources are well characterized, the event causes were not immediately clear. Initial toxic screening indicated that one was very toxic, another moderately toxic, and the third not toxic at all. All three systems utilized the same chemical treatment program to avoid fouling: stabilized phosphates with minor variants. The most toxic of the cooling systems operated at 10-12 cycles, had three chemicals for biocide control, and had three makeup streams. Toxic and nontoxic system characteristics were compared. An in-depth modified toxicity identification and evaluation program was then performed to identify and evaluate the cause of the toxicity alarm for future prevention. The most probable causes of toxicity were identified by elimination. The combination of high numbers of cycles, hydrocarbons in the makeup water, and bromine added as an antifoulant resulted in formation of aromatic bromamines which are capable of causing the toxic condition experienced. 2 tabs

  3. Comparison between different approaches to modeling shallow landslide susceptibility: a case history in Oltrepo Pavese, Northern Italy

    D. Zizioli


    Full Text Available On the 27 and 28 April 2009, the area of Oltrepo Pavese in northern Italy was affected by a very intense rainfall event that caused a great number of shallow landslides. These instabilities occurred on slopes covered by vineyards or recently formed woodlands and caused damage to many roads and one human loss. Based on aerial photographs taken immediately after the event and field surveys, more than 1600 landslides were detected. After acquiring topographical data, geotechnical properties of the soils and land use, susceptibility analysis on a territorial scale was carried out. In particular, different physically based models were applied to two contiguous sites with the same geological context but different typologies and sizes of shallow landslides. This paper presents the comparison between the ex-post results obtained from the different approaches. On the basis of the observed landslide localizations, the accuracy of the different models was evaluated, and the significant results are highlighted.

  4. Case Base Maintenance Approach.

    Haouchine, Mohamed-Karim; Chebel-Morello, Brigitte; Zerhouni, Noureddine


    Case base Maintenance is an active Case Based Reasoning research area. The main stream focuses on the method for reducing the size of the case-base while maintaining case-base competence. This paper gives an overview of these works, and proposes a case deletion strategy based on competence criteria using a novel approach. The proposed method, even if inspired from existing literature, combines an algorithm with a Competence Metric (CM). A series of tests are conducted using two standards data...

  5. Approaches and Methods of Periodization in Literary History

    Dr. N. Gh. Sarli

    Full Text Available One of the most fundamental acts of historiography is to classify historical information in diachronic axis. The method of this classification or periodization shows the theoretical approach of the historian and determines the structure and the form of his history. Because of multiple criteria of analysis and various literary genres, periodization in literary history is more complicated than that of general history. We can distinguish two approaches in periodization of literary history, although these can be used together: extrinsic or social-cultural approach (based on criteria extrinsic to literature and intrinsic or formalist approach (based on criteria intrinsic to literature. Then periodization in literary history can be formulated in different methods and may be based upon various criteria: chronological such as century, decade and year; organic patterns of evolution; great poets and writers; literary emblems and evaluations of every period; events, concepts and periods of general or political history; analogy of literary history and history of ideas or history of arts; approaches and styles of language; dominant literary norms. These methods actually are used together and everyone has adequacy in special kind of literary history. In periodization of Persian contemporary literature, some methods and models current in periodization of poetry have been applied identically to periodization of prose. Periodization based upon century, decade and year is the simplest and most mechanical method but sometimes certain centuries in some countries have symbolic and stylistic meaning, and decades were used often for subdivisions of literary history, especially nowadays with fast rhythm of literary change.Periodization according to organic patterns of evolution equates the changes of literary history with the life phases of an organism, and offers an account of birth, mature and death (and sometimes re-birth of literary genres, but this method have

  6. Approaches and Methods of Periodization in Literary History

    Naser Gholi Sarli


    Full Text Available Abstract One of the most fundamental acts of historiography is to classify historical information in diachronic axis. The method of this classification or periodization shows the theoretical approach of the historian and determines the structure and the form of his history. Because of multiple criteria of analysis and various literary genres, periodization in literary history is more complicated than that of general history. We can distinguish two approaches in periodization of literary history, although these can be used together: extrinsic or social-cultural approach (based on criteria extrinsic to literature and intrinsic or formalist approach (based on criteria intrinsic to literature. Then periodization in literary history can be formulated in different methods and may be based upon various criteria: chronological such as century, decade and year organic patterns of evolution great poets and writers literary emblems and evaluations of every period events, concepts and periods of general or political history analogy of literary history and history of ideas or history of arts approaches and styles of language dominant literary norms. These methods actually are used together and everyone has adequacy in special kind of literary history. In periodization of Persian contemporary literature, some methods and models current in periodization of poetry have been applied identically to periodization of prose. Periodization based upon century, decade and year is the simplest and most mechanical method but sometimes certain centuries in some countries have symbolic and stylistic meaning, and decades were used often for subdivisions of literary history, especially nowadays with fast rhythm of literary change. Periodization according to organic patterns of evolution equates the changes of literary history with the life phases of an organism, and offers an account of birth, mature and death (and sometimes re-birth of literary genres, but this method have

  7. Doing Local History: A Case Study of New Brunswick, New Jersey

    Marino, Michael P.; Crocco, Margaret Smith


    This article provides a methodology that teachers can use to incorporate themes and ideas related to local history in their classrooms. Using the city of New Brunswick, New Jersey as a case study, the article offers different approaches that allow local history to be connected to wider themes in American history. The focus here on a small,…

  8. On the consistent effect histories approach to quantum mechanics

    A formulation of the consistent histories approach to quantum mechanics in terms of generalized observables (POV measures) and effect operators is provided. The usual notion of open-quote open-quote history close-quote close-quote is generalized to the notion of open-quote open-quote effect history.close-quote close-quote The space of effect histories carries the structure of a D-poset. Recent results of J. D. Maitland Wright imply that every decoherence functional defined for ordinary histories can be uniquely extended to a bi-additive decoherence functional on the space of effect histories. Omngrave es close-quote logical interpretation is generalized to the present context. The result of this work considerably generalizes and simplifies the earlier formulation of the consistent effect histories approach to quantum mechanics communicated in a previous work of this author. copyright 1996 American Institute of Physics

  9. Geothermal systems: Principles and case histories

    Rybach, L.; Muffler, L. J. P.

    The classification of geothermal systems is considered along with the geophysical and geochemical signatures of geothermal systems, aspects of conductive heat transfer and regional heat flow, and geothermal anomalies and their plate tectonic framework. An investigation of convective heat and mass transfer in hydrothermal systems is conducted, taking into account the mathematical modelling of hydrothermal systems, aspects of idealized convective heat and mass transport, plausible models of geothermal reservoirs, and preproduction models of hydrothermal systems. Attention is given to the prospecting for geothermal resources, the application of water geochemistry to geothermal exploration and reservoir engineering, heat extraction from geothermal reservoirs, questions of geothermal resource assessment, and environmental aspects of geothermal energy development. A description is presented of a number of case histories, taking into account the low enthalpy geothermal resource of the Pannonian Basin in Hungary, the Krafla geothermal field in Northeast Iceland, the geothermal system of the Jemez Mountains in New Mexico, and extraction-reinjection at the Ahuachapan geothermal field in El Salvador.

  10. Lesson learned case study: What the history of ozone depelting chemical phaseout may teach us about how to approach international climate change policy

    Younis, S.E. [Conceptual Engineering Group, Inc., Crofton, MD (United States); Verdonik, D.P. [Hughes Associates, Inc., Baltimore, MD (United States)


    The world approached the production phaseout of ozone depleting chemicals conservatively under the Vienna Convention. The initial tasks were to recognize the problem within the science field and make political leaders and people aware that the problem existed and was a real threat to environmental stability. Several years later, Meetings of the Parties to the Montreal Protocol to Protect the Stratospheric Ozone Layer began occurring regularly. Long term goals on production reduction levels of chlorofluorocarbons (CFCs) and halons were set. Rapid acceleration in production phaseout dates were implemented worldwide, impacting industry plans to research, develop, and implement replacements. The impacts were widespread from small cleaning processes to the defense of countries. The trials and tribulations that industries such as the foam, refrigeration, air conditioning, fire protection, and manufacturing industries have gone through to meet the accelerated challenges are great. This fight is not yet over. Alternatives have yet to be fully implemented, long term effects analysis are not yet completed, budgets have not caught up with the rapid phaseout, and supplies of ODCs are dwindling quickly, as well as increasing in cost at a rapid rate. This is being felt from car owner all the way up to the national defense of countries. The paper will briefly describe the historic events and developments that occurred to industry and the users, from a political, environmental, and business perspective. From this, valuable lessons can be learned and we can plan for the future well in advance, in order that we are not caught off guard again. A very real environmental problem exists with global climate change. This is being increasingly recognized by both political leaders and citizens alike. From what we have seen with ODC phaseout, we can potentially project what course the future.

  11. The Energy Crisis and the Media: Some Case Histories.

    Schmertz, Herbert

    The five case histories presented in this paper discuss the relations of the Mobil Oil Corporation with various news media since 1973, particularly the difficulties that the oil industry has faced in communicating with and through the news media. The case histories deal with the following topics; news stories about tankers allegedly waiting…

  12. Cynicism, Skepticism and History. Cioran and Veyne Cases

    Roch Charles Little


    Full Text Available Cynicism and skepticism are nowadays conceived as curiosities in the history of philosophical thought, reduced to "eccentric" characters like Diogenes of Sinope and Pyrrho of Elis and a series of anecdotes about them.However, they have gone beyond classical antiquity to the present. Both schools of thought offer a constant challenge to the "official" thought bon ton: mocking and irreverent criticism in the case of the first and extreme relativism in the second.This paper presents an epistemological approach supporting the recovery of the cynicism and the pyrrhonian skepticism principles for the criticism of the historical thought in the modernity It is divided into two parts: the first one shows the broad features of these philosophical trends and the second examines their contributions to historical knowledge based on two cases: Cioran for the cynicism and Veyne for the skepticism.

  13. A case history: from traumatic repetition towards psychic representability.

    Bichi, Estela L


    This paper is devoted principally to a case history concerning an analytic process extending over a period of almost ten years. The patient is B, who consulted the author after a traumatic episode. Although that was her reason for commencing treatment, a history of previous traumatogenic situations, including a rape during her adolescence, subsequently came to light. The author describes three stages of the treatment, reflected in three different settings in accordance with the work done by both patient and analyst in enabling B to own and work through her infantile and adult traumatic experiences. The process of transformation of traumatic traces lacking psychic representation, which was undertaken by both members of the analytic couple from the beginning of the treatment, was eventually approached in a particular way on the basis of their respective creative capacities, which facilitated the patient's psychic progress towards representability and the possibility of working through the experiences of the past. Much of the challenge of this case involved the analyst's capacity to maintain and at the same time consolidate her analytic posture within her internal setting, while doing her best to overcome any possible misfit (Balint, 1968) between her own technique and the specific complexities of the individual patient. The account illustrates the alternation of phases, at the beginning of the analysis, of remembering and interpretation on the one hand and of the representational void and construction on the other. In the case history proper and in her detailed summing up, the author refers to the place of the analyst during the analytic process, the involvement of her psychic functioning, and the importance of her capacity to work on and make use of her countertransference and self-analytic introspection, with a view to neutralizing any influence that aspects of her 'real person' might have had on the analytic field and on the complex processes taking place within


    Olesen, Henning Salling


    other forms of language interactive material as moments of life history, i.e. it is basically a hermeneutic approach. Talking about a psycho-societal approach indicates the ambition of attacking the dichotomy of the social and the psychic, both in the interpretation procedure and in some main...

  15. The Multi-Disciplinary Approach in History and Ethnic Studies.

    Balogh, Sandor


    Considers the fractionalization of the social science disciplines indicating that this clear delineation of intellectual territory is important to research, but that in information assimilation and dissemination an interdisciplinary approach is more appropriate. Recommends two approaches to interdisciplinary studies based around history and ethnic…

  16. History and Policy: The Case of Iraq

    Bruce Kuklick


    The decision by Americans to go to war against Iraq has appeared to be such a colossal mistake that it has called forth many condemnations by historically minded intellectuals. Most have condemned the hubris and historical insouciance of the administration of George Bush. Few historians think that the President resembles Abraham Lincoln, guiding his country through a necessarily difficult but morally majestic period. Rather, we are told, history directs us to other policy choices and will mer...

  17. History and Policy: The Case of Iraq

    Bruce Kuklick


    Full Text Available The decision by Americans to go to war against Iraq has appeared to be such a colossal mistake that it has called forth many condemnations by historically minded intellectuals. Most have condemned the hubris and historical insouciance of the administration of George Bush. Few historians think that the President resembles Abraham Lincoln, guiding his country through a necessarily difficult but morally majestic period. Rather, we are told, history directs us to other policy choices and will me...

  18. The safety case - concept, history and purpose

    The present paper reviews the major milestones and consolidation stages in the development of the safety case concept since the late 1980 and the associated evolution of key elements from the perspective of over 20 years of safety-case-related work in the OECD Nuclear Energy Agency: 1989 Symposium the first consolidation of the state of the art; 1994 GEOVAL 94 exit validation, enter confidence building; 1994-2002 IPAG integrated assessments and their review, safety case, difficulties with multi-barrier concept; 1996-1999 formulation of the modern concept of safety case and its development; 2000-2007 consolidation and reinforcement of the safety case concept and its elements. (A.L.B.)

  19. Energy and environmental quality: case histories of impact management

    A discussion of energy source devlopments and environmental protection dealing with impacts, and legal aspects of pollution controls and resource management, and case history studies of major energy projects is presented

  20. The Sirenomelia Sequence: A Case History

    Fadhlaoui, Anis; Khrouf, Mohamed; Gaigi, Soumaya; Zhioua, Fethi; Chaker, Anis


    We report a case of sirenomelia sequence observed in an incident of preterm labor during the 29th gestational week. According to some authors, this syndrome should be classified separately from caudal regression syndrome and is likely to be the result of an abnormality taking place during the fourth gestational week, causing developmental abnormalities in the lower extremities, pelvis, genitalia, urinary tract and digestive organs. Despite recent progress in pathology, the etiopathogenesis of...

  1. The Bipolar Approach: A Model for Interdisciplinary Art History Courses.

    Calabrese, John A.


    Describes a college level art history course based on the opposing concepts of Classicism and Romanticism. Contends that all creative work, such as film or architecture, can be categorized according to this bipolar model. Includes suggestions for objects to study and recommends this approach for art education at all education levels. (CFR)

  2. Rumination in adults: two case histories.

    Tamburrino, M B; Campbell, N B; Franco, K N; Evans, C L


    Rumination has been reported to be a relatively rare disorder of eating during infancy. Over the past decade, there appears to be a renewed interest in and recognition of adult rumination. Although some authors believe adult rumination is benign, others have begun to link it with both eating disorders and depressive symptoms. This paper presents two adult cases whose rumination was associated with anorexia and bulimia nervosa. More identification and study of adult rumination is needed to clarify its course and medical significance. PMID:7894448

  3. Coiled tubing sidetrack: Slaughter Field case history

    Hightower, C.M.; Blount, C.G.; Ward, S.L.; Martin, R.F.; Cantwell, D.L.; Ackers, M.J.


    The paper describes the successful sidetrack of an oil well in the Slaughter Field in West Texas using coiled tubing (CT). Several first-time CT operations performed during this workover include: setting a whipstock in casing on CT; cutting a window with CT; using mud pulse measurement-while-drilling (MWD) with CT in a real well; use of a fluid-operated orientation tool for in-hole toolface changes; successful use of an autodriller to maintain weight on bit while drilling. Directional control of the sidetracked hole proved to be ineffective due to a surface software problem. The resultant wellbore was not horizontal as planned, but instead closely paralleled the original well for much of its length. However, the previously non-productive well flowed 1,000 barrels of fluid per day (BFPD) from the sidetrack following the workover.

  4. Case histories of microbial induced corrosion

    Birketveit, Oe.; Liengen, T.


    Recent years bacterial activity has caused process problems and corrosion on several of Hydro s installations in the North Sea. The process problems are related to iron sulphide formed in process equipment and increased oil in discharge water. The corrosion problem is seen in downstream pipelines made of carbon steel, where deposits and formation of biofilm cause the corrosion inhibitor to be ineffective. In most cases the bacteria reproduce in the topside system and especially in the reclaimed oil sump tank. The problems observed, related to bacterial activity, are often a result of how the content from the reclaimed oil sump tank is re-circulated to the process system. Process modifications, changes in biocide treatment strategy, sulphide measurements, cleaning strategy and bio monitoring are presented. (author) (tk)

  5. Case notes, case histories, and the patient's experience of insanity at Gartnavel Royal Asylum, Glasgow, in the nineteenth century.

    Andrews, J


    This article is concerned primarily with questions as to how and why case notes were produced and utilized, and how they may (or may not) be used by historians. More specifically, it discusses how the Glasgow Royal Asylum's case notes may be deployed to access patients' experiences of madness and confinement. The deficiencies and biases of the case record are also explored. So too is the relationship of case notes with other asylum based records, including reception order questionnaires, with a separate section on patient writings as part of the case history corpus. This leads into an analysis of how the Asylum's case notes became case histories and for what purposes. These subjects are related to changes and continuities in medical ideologies about insanity, social attitudes to the insane and the nature of medical practice in asylums. Some fundamental shifts in emphasis in the use of the case note and case history occurred in this period. These shifts were associated with an increased emphasis on organic interpretations of mental disease and on clinical approaches to insanity; with the medicalization of asylum records and the wider discourse on insanity, and with declining deference to the public at large in the presentation of cases. The survey concludes by analysing the changing place of patient testimony within the case record. PMID:11620430

  6. The wholeness teaching in history lessons: A perspective essay from Gestalt approach to holistic approach

    Ahmet Şimşek


    Full Text Available In these days, education researchs emphasise on learning. The importance of wholeness in learning is just realized. Because of this, the thesis that the way individuals sense the world is complete, is became more important. The studies which are emphasize on wholeness learning are Gestalt, contructivism and holistic thinking. In this study, it is claimed that teaching history will be more fruitfull by the wholeness learning approach. Because, by wholeness history teaching, it will be possible to make individuals learn meaningful, permanent and functional. For this, firstly, history teaching curriculum’s contents have to be prepared as in Annales school with a interdisipliner approach. Additionally, in the history teaching process, it is clear that a plan, aplication and evaluation which will be supported the wholeness learning are needed. At this point, in developing a history curriculum, 2005 Elemantary Social Science Curricullum approach can be appropriated. That is a tematic curriculum which takes note the chronological order. But, it is not enough to change the teaching curriculum for wholeness history teaching. First of all, teachers have to leave their traditional history perception and appropriate the wholeness approach.

  7. The Case History Method of Testing Students in Gross Anatomy.

    Cruise, Leon J.


    The use of case histories to test a student's knowledge of the previous weeks' dissection in gross anatomy class is discussed. The test is seen as a way to integrate other basic sciences. An example of this type of test is provided. (MLW)

  8. Parathyroid carcinoma: a review and presentation of two case histories

    Parathyroid carcinoma is extremely rare, accounting for only 0.005% of all cancers. This paper reviews the pathological and clinical aspects of this neoplasm and reports the histories of two cases seen at the Princess Royal University Hospital, Farnborough. (authors)

  9. Methodological Approaches to the Study of British Banking History. A Select Illustration from Bank-Firm Relationships

    Mae Baker; Michael Collins


    The article discusses different approaches to the study of British banking history. There is a brief consideration of the case study approach which has traditionally been prominent; the studies of the Midland Bank, by Homes and Green, and of Barclays Bank, by Ackrill and Hannah, illustrate some of the strengths and weaknesses associated with this form of historical methodology. However, the authors argue that the study of banking history can benefit from the more explicit use of theoretical c...

  10. Genome-wide association study reveals greater polygenic loading for schizophrenia in cases with a family history of illness

    Bigdeli, Tim B; Ripke, Stephan; Bacanu, Silviu-Alin;


    of inherited rather than environmental factors. We investigated the extent to which familiality of schizophrenia is associated with enrichment for common risk variants detectable in a large GWAS. We analyzed single nucleotide polymorphism (SNP) data for cases reporting a family history of psychotic illness (N...... history subgroup. Comparison of genome-wide polygenic risk scores based on GWAS summary statistics indicated a significant enrichment for SNP effects among family history positive compared to family history negative cases (Nagelkerke's R(2 ) = 0.0021; P = 0.00331; P-value threshold ... = 978), cases reporting no such family history (N = 4,503), and unscreened controls (N = 8,285) from the Psychiatric Genomics Consortium (PGC1) study of schizophrenia. We used a multinomial logistic regression approach with model-fitting to detect allelic effects specific to either family history...

  11. La historia Médico legal en casos de delitos sexuales en niños -un enfoque médico forense The medical-legal history in cases of sexual assault in children. A forensic medical approach

    Édgar Alonso Madrigal Ramírez


    Full Text Available Se ha considerado al Interrogatorio Médico Forense en casos de Delitos Sexuales en Niños como revictimizante. La Historia Médico Legal en Delitos Sexuales recoge la información necesaria para orientar el Examen Físico y para la recolección de evidencias en la víctima y en su contexto. Existen técnicas médico forenses para interrogar al niño con el afán de evitar la revictimización, entendida esta como el sufrimiento que experimentan las víctimas al promoverse una actualización del evento traumático. La Historia Médico Legal persigue objetivos diferentes al resto de los interrogatorios dentro del proceso judicial y sigue las pautas del Arte y Ciencia de la Medicina y bien implementadas no produce la revictimización del paciente.The Forensic Medical interrogation has been considered as revictimizing in cases about Sexual Assaults on Children. The Medical Legal History in Sexual Assaults meets the necessary information to guide the two main procedures: the physical examination and the gathering of evidence on the victim as well as in its context. There are forensic techniques to avoid revictimization on children during interrogation, understanding the revictimization as the suffering the victim experiences, when remembering a traumatic event during the Medical Legal Examination. The medical-legal history pursues goals that are different from those of other interrogation procedures within the judicial process, and when following the guidelines of the art and science of medicine, it well established, do not produce revictimization of the patient.

  12. Comparison the Proposed Probabilistic-Based Tim-History and the Traditional PSHA Approach

    A. Nicknam


    The main objective of this article is to demonstrate the ability of our technique in estimating the probabilistic-based time-history to be used in dynamic analysis of structures. The result of using our technique is compared with that of traditional approach proposed by Cornell (Cornell, 1968), in the form of response spectrum through a case study. Good agreement of the two approaches confirms the applicability/reliability of our technique having the merit of being dynamic form to be used in ...

  13. Analysis of Life Histories: A State Space Approach

    Rajulton, Fernando


    Full Text Available EnglishThe computer package LIFEHIST written by the author, is meant for analyzinglife histories through a state-space approach. Basic ideas on which the various programs have beenbuilt are described in this paper in a non-mathematical language. Users can use various programs formultistate analyses based on Markov and semi-Markov frameworks and sequences of transitions implied inlife histories. The package is under constant revision and programs for using a few specific modelsthe author thinks will be useful for analyzing longitudinal data will be incorporated in the nearfuture.FrenchLe système d'ordinateur LIFEHIST écrit par l'auteur est établi pour analyser desévénements au cours de la vie par une approche qui tient compte des états aucours du temps. Les idées fondamentales à la base des divers programmes dumodule sont décrites dans un langage non-mathématique. Le systèmeLIFEHIST peut être utilisé pour des analyses Markov et semi-Markov desséquences d’événements au cours de la vie. Le module est sous révisionconstante, et des programmes que l’auteur compte ajouter pour l'usage dedonnées longitudinales sont décrit.


    Guillermo Guajardo Soto


    Full Text Available The article highlights the need to address the history of public companies in Latin America for having played a significant role in regional development during the 20th Century, as well as for the current reappearance of these organisms in the international energy sector, for the strategic role they still play in many countries and, lastly, because decades of privatization have weakened the collective memory on these organisms, in favour of the prevailing neoliberal version which justified the sale of the public heritage. Do we have good knowledge on the history behind the importance and track record of public companies in Mexico and Latin America? How can their resistance after decades of privatizations be explained? These queries are replied in the current dossier of the Public Management Journal, which gathers a group of studies analysing the cases of Uruguay, Costa Rica, Bolivia, Brazil and Argentina between 1912 and 2012, shedding light on the entrepreneurial activities of the State under different economic models. In these countries, public companies have placed themselves in vital areas for the functioning of the economies, such as telecommunications, electricity,oil, transportation and, to a lesser extent, manufacturing. The final section is an invitation not only to read but also to initiate an agenda to analyse and allow revealing the complex history of these public organisms.

  15. Metallography helps NDT - some case histories [Paper IX-b

    Metallography and NDT appear almost opposite. One requires sectioning, polishing, etching etc. while the other, being non-dectructive testing, examines without damage or impairing the serviceability of the components. Many times one helps the other to evaluate and accept the soundness of the material or joint. The science of metallography is essentially the study of the structural characteristics and some of the NDT technique such as UT is very much influenced by such characteristics of the material. With the advancement of technology, in some cases metallographic examinations are carried out in-situ and are helpful in deciding the direction of investigation. Sometimes, it becomes impractical to adopt satisfactory quality control techniques and therefore process is controlled by using combination of metallographic examination and statistical techniques. These are illustrated with the help of case histories. (author)

  16. Case-control geographic clustering for residential histories accounting for risk factors and covariates

    Goovaerts Pierre


    Full Text Available Abstract Background Methods for analyzing space-time variation in risk in case-control studies typically ignore residential mobility. We develop an approach for analyzing case-control data for mobile individuals and apply it to study bladder cancer in 11 counties in southeastern Michigan. At this time data collection is incomplete and no inferences should be drawn – we analyze these data to demonstrate the novel methods. Global, local and focused clustering of residential histories for 219 cases and 437 controls is quantified using time-dependent nearest neighbor relationships. Business address histories for 268 industries that release known or suspected bladder cancer carcinogens are analyzed. A logistic model accounting for smoking, gender, age, race and education specifies the probability of being a case, and is incorporated into the cluster randomization procedures. Sensitivity of clustering to definition of the proximity metric is assessed for 1 to 75 k nearest neighbors. Results Global clustering is partly explained by the covariates but remains statistically significant at 12 of the 14 levels of k considered. After accounting for the covariates 26 Local clusters are found in Lapeer, Ingham, Oakland and Jackson counties, with the clusters in Ingham and Oakland counties appearing in 1950 and persisting to the present. Statistically significant focused clusters are found about the business address histories of 22 industries located in Oakland (19 clusters, Ingham (2 and Jackson (1 counties. Clusters in central and southeastern Oakland County appear in the 1930's and persist to the present day. Conclusion These methods provide a systematic approach for evaluating a series of increasingly realistic alternative hypotheses regarding the sources of excess risk. So long as selection of cases and controls is population-based and not geographically biased, these tools can provide insights into geographic risk factors that were not specifically

  17. Social History of Medicine today – a classic approach beyond the turns of the turns

    Alfons Labisch


    Full Text Available In the late 1960s, social history developed into an imperative approach in general historiography in Germany. Since the mid‐1970s, also social history of medicine has been developed into a comprehensive research approach. But in the 1990s, all of a sudden, social history of medicine vanished. The constructivist history of science, the linguistic‐ constructivist theories in humanities and micro‐historiographical approaches from general history prevailed. After the firstdecade of the 21st century, the innovative highlights of these developments exceeded. Just at this point, it is appropriate to ask for the genuine and permanent role of a social history of medicine. Seen from the peculiarity of medicine the social history of medicine has a genuine field of topics in the social environment of disease and health. These topics have to be treated with their own approaches and methods, derived from its reference disciplines sociology and economics.

  18. Case histories of West Valley spent fuel shipments: Final report

    In 1983, NRC/FC initiated a study on institutional issues related to spent fuel shipments originating at the former spent fuel processing facility in West Valley, New York. FC staff viewed the shipment campaigns as a one-time opportunity to document the institutional issues that may arise with a substantial increase in spent fuel shipping activity. NRC subsequently contracted with the Aerospace Corporation for the West Valley Study. This report contains a detailed description of the events which took place prior to and during the spent fuel shipments. The report also contains a discussion of the shipment issues that arose, and presents general findings. Most of the institutional issues discussed in the report do not fall under NRC's transportation authority. The case histories provide a reference to agencies and other institutions that may be involved in future spent fuel shipping campaigns. 130 refs., 7 figs., 19 tabs

  19. Case histories of West Valley spent fuel shipments: Final report


    In 1983, NRC/FC initiated a study on institutional issues related to spent fuel shipments originating at the former spent fuel processing facility in West Valley, New York. FC staff viewed the shipment campaigns as a one-time opportunity to document the institutional issues that may arise with a substantial increase in spent fuel shipping activity. NRC subsequently contracted with the Aerospace Corporation for the West Valley Study. This report contains a detailed description of the events which took place prior to and during the spent fuel shipments. The report also contains a discussion of the shipment issues that arose, and presents general findings. Most of the institutional issues discussed in the report do not fall under NRC's transportation authority. The case histories provide a reference to agencies and other institutions that may be involved in future spent fuel shipping campaigns. 130 refs., 7 figs., 19 tabs.

  20. Narratives from within: An Arendtian Approach to Life Histories and the Writing of History

    Tamboukou, Maria


    In this paper I draw on my current research of writing a genealogy of women artists, focusing in particular on the life history of the American working-class artist, May Stevens (1924-). I am particularly interested in how an analysis of the textual and visual narratives in her work, seen in the context of her life history, can intervene in the…

  1. Decoherent histories approach to the cosmological measure problem

    Lloyd, Seth


    The method of decoherent histories allows probabilities to be assigned to sequences of quantum events in systems, such as the universe as a whole, where there is no external observer to make measurements. This paper applies the method of decoherent histories to address cosmological questions. Using a series of simple examples, beginning with the harmonic oscillator, we show that systems in a stationary state such as an energy eigenstate or thermal state can exhibit decoherent histories with non-trivial dynamics. We then examine decoherent histories in a universe that undergoes eternal inflation. Decoherent histories that assign probabilities to sequences of events in the vicinity of a timelike geodesic supply a natural cosmological measure. Under reasonable conditions, such sequences of events do not suffer from the presence of unlikely statistical fluctuations that mimic reality.

  2. Methodologic Approaches to Histologically Distinguishing Vaccine versus Nonvaccine-Associated Sarcomas Using Validated Time and Location Vaccination Histories in Cats

    Anup Srivastav; Philip H. Kass; McGill, Lawrence D.; Kent, Michael S; Thomas B. Farver


    Epidemiologic studies of feline vaccine-associated sarcoma (FVAS) require accurate sarcoma case definitions free from unverified assumptions for valid causal inference. This study developed methodologic approaches to improve reliable differentiation of vaccine versus nonvaccine-associated sarcomas on histologic characteristics using time windows of vaccine histories and body geographic information. Four case and five control definitions were used to classify 124 sarcomas. Results showed prese...

  3. Specific Features of the Contact History of Probable Cases of Severe Acute Respiratory Syndrome



    Objective To describe the specific features of the contact history of probable cases of severe acute respiratory syndrome (SARS) in Beijing. Methods Data of SARS cases notified from the Beijing Municipal Center for Disease Control and Prevention (BCDC) and supplemented by other channels were collected. All the data were analyzed by descriptive epidemiology. Results ①The number of probable cases with contact history was significantly higher than the excluded cases. ②The proportion of probable cases with contact history descended with epidemic development, but this situation did not occur in health care workers (HCWs). ③The fatality rate of probable cases with contact history was significantly higher than the cases without contact history (OR=1.489). ④The proportion of probable cases with contact history was 85.86% among health care workers, which was significantly higher than that of non-health care workers (85.86% v.s. 56.44%, OR=4.69). Conclusions ①The susceptible persons with contact history may not get infected, and the contact history is just a sufficient condition of infecting SARS; ②There are 3 conceivable reasons for the descending trend of the proportion in probable cases with contact history; ③The contact history is one of the risk factors of the death of SARS cases; ④The risk of contacting with SARS among health care workers is approximately 5 times higher than that of non-HCWs.

  4. Comparing an Aesthetic and a Political Approach to Teaching World History.

    Grant, Evelyn T.; Napier, John D.


    Discusses a study undertaken to examine the effects on student achievement and attitudes of an integrated approach to teaching world history (termed the aesthetic approach) by comparing it to a traditional approach (termed a political approach). Findings indicated that the aesthetic approach was a more effective means of presenting a broad range…

  5. The consistent histories approach to loop quantum cosmology

    Craig, David A


    We review the application of the consistent (or decoherent) histories formulation of quantum theory to canonical loop quantum cosmology. Conventional quantum theory relies crucially on "measurements" to convert unrealized quantum potentialities into physical outcomes that can be assigned probabilities. In the early universe and other physical contexts in which there are no observers or measuring apparatus (or indeed, in any closed quantum system), what criteria determine which alternative outcomes may be realized and what their probabilities are? In the consistent histories formulation it is the vanishing of interference between the branch wave functions describing alternative histories -- as determined by the system's decoherence functional -- that determines which alternatives may be assigned probabilities. We describe the consistent histories formulation and how it may be applied to canonical loop quantum cosmology, describing in detail the application to homogeneous and isotropic cosmological models with ...

  6. Using History to Teach Mathematics: The Case of Logarithms

    Panagiotou, Evangelos N.


    Many authors have discussed the question "why" we should use the history of mathematics to mathematics education. For example, Fauvel ("For Learn Math," 11(2): 3-6, 1991) mentions at least fifteen arguments for applying the history of mathematics in teaching and learning mathematics. Knowing "how" to introduce history into mathematics lessons is a…




  8. An Interdisciplinary Approach to the Diagnosis and Management of a Complex Case of Postencephalitic Behavioral Disorder.

    Fialkov, M. Jerome; And Others


    The diagnosis and treatment of a 13-year-old female who manifested postencephalitic behavioral syndrome 9 years after an acute measles infection are described, along with the history of the case. The case illustrates that an interdisciplinary approach using a single-case experimental design can be clinically effective. (SEW)

  9. Comparison the Proposed Probabilistic-Based Tim-History and the Traditional PSHA Approach

    A. Nicknam


    Full Text Available The main objective of this article is to demonstrate the ability of our technique in estimating the probabilistic-based time-history to be used in dynamic analysis of structures. The result of using our technique is compared with that of traditional approach proposed by Cornell (Cornell, 1968, in the form of response spectrum through a case study. Good agreement of the two approaches confirms the applicability/reliability of our technique having the merit of being dynamic form to be used in recognizing the vulnerability as well as performance evaluation of exiting important structures particularly in regions with lack of destructive earthquake information such as the region under study, Arge-Bam which was highly damaged through the destructive Bam earthquake in 2003.

  10. Is the consistent histories approach to quantum mechanics consistent?

    The Consistent Histories (CH) formalism attempts to construct a quantum framework which can be used without the need to introduce observers external to the studied system. The prime motivation in mind is the application of the formalism to the universe as a whole. In order to achieve this, CH maintains that a formulation of quantum mechanics should allow for the assignment of probabilities to alternative histories of a system. Therefore, it provides an observer-independent criterion to decide which sets of histories can be given probabilities and states rules to determine them. The framework establishes that each realm, that is, each set of histories to which probabilities can be assigned, provides a valid quantum-mechanical account of a system. Furthermore, the version of CH first presented in [1, 2] proposes an 'evolutionary' explanation of our existence in the universe and of our preference for quasiclassical descriptions of nature. The present work critically evaluates claims to the effect that the formalism offered in [1, 2] solves many interpretational problems in quantum mechanics. In particular, it is pointed out that the interpretation of the proposed framework leaves vague two crucial points, namely, whether realms are fixed or chosen and the link between measurements and histories. The claim of this work is that by doing so, CH overlooks the main interpretational problems of quantum mechanics. Furthermore, we challenge the evolutionary explanation offered and we critically examine the proposed notion of a realm-dependent reality.

  11. Blogging as Popular History Making, Blogs as Public History: The Singapore Case Study

    Stephanie Ho


    Blogging is a twenty-first century phenomenon that has heralded an age where ordinary people can make their voices heard in the public sphere of the Internet. This article explores blogging as a form of popular history making; the blog as a public history document; and how blogging is transforming the nature of public history and practice of history making in Singapore. An analysis of two Singapore ‘historical’ blogs illustrates how blogging is building a foundation for a more participatory h...

  12. Pediatric surgical diseases. A radiological surgical case study approach

    Radiologic evaluation of an infant or child suspected of having a surgical disease can be a complex problem. With this volume, the editors have created a book focused on pediatric imaging written by pediatricians, pediatric surgeons and pediatric radiologists. This book is a collection of over 200 case reports. The concept is a case study approach: The reader is given radiologic images (plain radiography, computed tomography, magnetic resonance imaging, ultrasonography, etc.) and the clinical history of the patient. On the basis of this information, the reader is asked to identify a diagnostic and therapeutic strategy. Each case is complemented by information on the disease affecting the patient and the management of the case shown, including therapy and follow-up. This educational text is targeted at all medical professionals faced with a variety of diagnostic and therapeutic problems affecting infants and children. (orig.)

  13. Social History and Taxes: the Case of Early Modern France

    Philip T. Hoffman


    [Introduction] Apart from a flurry of interest in tax revolts ten years ago, social historians of early modern Europe have by and large ignored taxation. Their neglect is perhaps understandable, given that social history itself arose as a revolt against traditional political history and all that it entailed, including the operations of the fisc. The fact that details of early modern fiscal systems often lie interred in tedious administrative histories or that many political historians themsel...

  14. Vibro Replacement, Dynamic Compaction, and Vibro Compaction case histories for petroleum storage tank facilities

    Beaton, N; Scott, J. [Geopac West Ltd., Richmond, BC (Canada)


    This paper discussed approaches to tank farm ground improvement via 3 Canadian ground improvement case histories in order to set forth the advantages of ground improvement for foundation support at petroleum storage tank facilities. Each case study featured a particular set of site conditions, performance criteria, and ground improvement techniques selected to attain the desired foundation performance. The first case study involved a Vibro Replacement stone column to meet strict seismicity requirements, the second employed Dynamic Compaction to mitigate deep variable fill within a former gravel pit, and the last encompassed Vibro Compaction applied to a site with a sand fill soil profile. The site conditions, the design requirements, the ground improvement solution, the execution, and the quality control techniques and results were presented for each case history. Soil reinforcement and ground improvement to treat loose and soft soils below heavy storage tanks can be an economical solution to foundation design challenges. However, it is important to select proper methods and tailor the densification programs to the specific subsoil conditions and design requirements. In each application, the selected ground improvement technique exceeded the specified in-situ testing requirements. 3 refs., 9 figs.

  15. A Genetic Approach to the History of the Magellanic Clouds

    Guglielmo, Magda; Lewis, Geraint F.; Bland-Hawthorn, Joss


    The history of the Magellanic Clouds is investigated using N-body hydrodynamic simulations where the initial conditions are set by a genetic algorithm. This technique allows us to identify possible orbits for the Magellanic Clouds around the Milky Way, by directly comparing the simulations with observational constraints. We explore the parameter space of the interaction between the Magellanic Clouds and the Milky Way, considering as free parameters the proper motions of the Magellanic Clouds,...

  16. Return to flight status after cardiac rehabilitation: three case histories.

    Dwyer, J


    A pilot's license to operate aircraft is not valid unless it is accompanied by a medical certificate. This certificate is revoked if a pilot is diagnosed with a cardiovascular illness. After a lengthy waiting period, the medical certificate may be reinstated if the pilot meets rigid standards. For many pilots, participation in a cardiac rehabilitation program is essential to achieve the minimal functional capacity in exercise testing (10.0 metabolic equivalents), document tolerance of medications, and achieve successful rehabilitation. Our staff has assisted 11 pilots in their quest to resume commercial or recreational flying after heart surgery, pacemaker implantation, or angioplasty. This article summarizes the case histories of three pilots who returned to fight status, in three Federal Aviation Administration categories (FAA), after a cardiac illness. The principle goals of our rehabilitation program for pilots are: (1) to achieve the highest possible outcome of the rehabilitation process; (2) to establish a safe and effective independent exercise program; (3) to obtain measures of compliance and success with the independent exercise program; (4) to document tolerance of medications and ensure that medications are acceptable to the FAA; (5) to document stability of the serum glucose in diabetic patients engaged in rigorous, prolonged exercise; and (6) prepare the patient for performance of a treadmill test in which 100% predicted maximum heart rate is achieved without symptoms of cardiovascular distress. An inherent effect of pursuing these goals is dramatic risk factor modification including improved blood pressure and lipid status and reduced body mass index. After resumption of flying, none of our pilot-patients have experienced cardiac symptoms during flight, nor have they required emergency department visits or hospitalization for any reason. PMID:11591042

  17. An intelligent approach to machine component health prognostics by utilizing only truncated histories

    Lu, Chen; Tao, Laifa; Fan, Huanzhen


    Numerous techniques and methods have been proposed to reduce the production downtime, spare-part inventory, maintenance cost, and safety hazards of machineries and equipment. Prognostics are regarded as a significant and promising tool for achieving these benefits for machine maintenance. However, prognostic models, particularly probabilistic-based methods, require a large number of failure instances. In practice, engineering assets are rarely being permitted to run to failure. Many studies have reported valuable models and methods that engage in maximizing both truncated and failure data. However, limited studies have focused on cases where only truncated data are available, which is common in machine condition monitoring. Therefore, this study develops an intelligent machine component prognostics system by utilizing only truncated histories. First, the truncated Minimum Quantization Error (MQE) histories were obtained by Self-organizing Map network after feature extraction. The chaos-based parallel multilayer perceptron network and polynomial fitting for residual errors were adopted to generate the predicted MQEs and failure times following the truncation times. The feed-forward neural network (FFNN) was trained with inputs both from the truncated MQE histories and from the predicted MQEs. The target vectors of survival probabilities were estimated by intelligent product limit estimator using the truncation times and generated failure times. After validation, the FFNN was applied to predict the machine component health of individual units. To validate the proposed method, two cases were considered by using the degradation data generated by bearing testing rig. Results demonstrate that the proposed method is a promising intelligent prognostics approach for machine component health.

  18. Acquaintance Rape: A Case Study Approach.

    Marinelli, Rosalie D.


    Describes a case study approach to acquaintance rape used in a Personal Health and Lifestyles course at the University of Nevada in Reno that allows students to discuss the characters in a scenario, an instructional process seen as less threatening than describing personal experiences. (MDM)

  19. History of Science and Instructional Design: The Case of Electromagnetism.

    Seroglou, Fanny; Koumaras, Panagiotis; Tselfes, Vassilis


    Addresses two research questions pertaining to the search for students' potential alternate conceptions within the history of science and the possibility of helping students overcome these misconceptions through historical experiments. Contains 19 references. (DDR)

  20. Approaching the Problem of Time with a Combined Semiclassical-Records-Histories Scheme

    Anderson, Edward


    I approach the Problem of Time and other foundations of Quantum Cosmology using a combined histories, timeless and semiclassical approach. This approach is along the lines pursued by Halliwell. It involves the timeless probabilities for dynamical trajectories entering regions of configuration space, which are computed within the semiclassical regime. Moreover, the objects that Halliwell uses in this approach commute with the Hamiltonian constraint, H. This approach has not hitherto been consi...

  1. Theorizing Learning in Life History - a psycho-societal approach

    Olesen, Henning Salling


      Taking it's point of departure in some critical remarks to some of the most important recent theorizing of learning, this article presents an alternative framework for theorizing learning as a subjective process in a social and societal context, based in life history research. Key concepts...... derived from European critical theory, subjectivity and experience, are briefly introduced with a view to their intellectual background. The chapter elaborates the implication of these concepts in relation to the understanding of emotional aspects of learning in everyday life and in relation...... to the understanding of knowledge, based on examples from the author's research into professional learning (general practitioners). The pivotal role of language use and language socialisation is explained in brief, developing a psychodynamic complement to a language game concept of language use....

  2. [Subjectivity and a clinical approach in primary healthcare: narratives, life histories and social reality].

    Barros, Rebeca Silva de; Botazzo, Carlos


    The focus of this article is on oral healthcare in Primary Healthcare. We discuss the issue taking the relationship of listening-host-link as a focus debating on the existence of a dichotomy between clinical-collective health. This investigation, took place in Cotia, São Paulo State between July and December 2007, based on the following assumptions: 1) answer the user's relevant oral care problem; 2) remove the dental focus; 3) establish the case through anamnesis; and 4) use electronic scheduling, medical files and sterilization of the health unit. Listening to the complaint, the oral clinical examination and compilation of the clinic history were recorded in the medical file, without using dental records. To discuss the approaches in the clinical area, we list 8 `Patographic Histories.' The objectives of communication during consultation are to listen, perform an accurate diagnosis and interfere to alleviate suffering by restoring the corporal homeostasis and creating a bond by modifying technical references and clinical language. The bond is the result of dialogue, the acceptance of responsibilities of both the professional and the user and the resolution of their complaints and needs. PMID:22124814

  3. Confederate Immigration to Brazil: A Cross-Cultural Approach to Reconstruction and Public History

    Karina Esposito


    Full Text Available Given the interconnectedness of the contemporary world, it is imperative that historians place their studies within a global context, connecting domestic and foreign events in order to offer a thorough picture of the past. As historians, we should aim at exploring transnational connections in our published research and incorporating the same methodologies in the classroom, as well as in the field of Public History. Cross-cultural collaboration and transnational studies are challenging, but exceptionally effective approaches to developing a comprehensive understanding of the past and connecting people to their history. Important recent scholarship has placed the American Civil War in a broad international and transnational context. This article argues for the importance of continuing this trend, pointing to a unique case study: the confederate migration to Brazil during and after the Civil War. This episode can help us understand the international impact of the War in the western hemisphere. These confederates attempted to preserve some aspects of their Southern society by migrating to Brazil, one of the remaining slaveholding societies in the hemisphere at the time. Moreover, the descendants that remained in Brazil have engaged in a unique process of remembering and commemorating their heritage over the years. Exploring this migration will enhance Civil War and Reconstruction historiography, as well as commemoration, heritage and memory studies.

  4. Landscapes and Production in History. Approaches and Methods

    Cristina Novoa Jáuregui


    This paper is presented as a general consideration, from two cases, about the analysis of the landscape in two different historical moments, responding to stimuli equally mixed, but sharing its concern at the environmental changes resulting from the productionof man, in the Archeology within a consolidating, in our country, as an autonomous science, social science.

  5. Landscapes and Production in History. Approaches and Methods

    Cristina Novoa Jáuregui


    Full Text Available This paper is presented as a general consideration, from two cases, about the analysis of the landscape in two different historical moments, responding to stimuli equally mixed, but sharing its concern at the environmental changes resulting from the productionof man, in the Archeology within a consolidating, in our country, as an autonomous science, social science.

  6. Teaching Political History within the International Relations: The Turkish Case

    İsmail Köse


    When compared with history the discipline of International Relations (IR) seems not to have a long lasting. However, it would not be wrong to say IR has been one of the most effective sciences with its norm in the inter-state relations. With its specificity IR has an inter-disciplinary format. Although it is a comparatively young among social sciences IR, with its curriculum in Turkey, is the roof of International Law, Political History and International Relations as main sub-branches of the ...

  7. A Mathematic Approach to Nitrogen Fixation Through Earth History

    Delgado-Bonal, Alfonso; Martín-Torres, F. Javier

    Nitrogen is essential for life as we know it. According to phylogenetic studies, all organisms capable of fixing nitrogen are prokaryotes, both bacteria and archaea, suggesting that nitrogen fixation and ammonium assimilation were metabolic features of the Last Universal Common Ancestor of all organisms. At present time the amount of biologically fixed nitrogen is around 2 × 1{0}^{13} g/year (Falkowski 1997), an amount much larger than the corresponding to the nitrogen fixed abiotically (between 2. 6 ×109 and 3 × 1{0}^{11} g/year) (Navarro-González et al. 2001). The current amount of nitrogen fixed is much higher than it was on Earth before the Cambrian explosion, where the symbiotic associations with leguminous plants, the major nitrogen fixer currently, did not exist and nitrogen was fixed only by free-living organisms as cyanobacteria. It has been suggested (Navarro-González et al. 2001) that abiotic sources of nitrogen fixation during Early Earth times could have an important role triggering a selection pressure favoring the evolution of nitrogenase and an increase in the nitrogen fixation rate. In this study we present briefly a method to analyze the amount of fixed nitrogen, both biotic and abiotic, through Earth's history.

  8. A forme fruste of Marfan's syndrome: case history.

    Lamers, R J; Janevski, B K


    A thirty nine year old woman presented with multiple aneurysms and dissections of the arterial system secondary to cystic medial necrosis is presented. After assessment of the family history a diagnosis of a forme fruste of Marfan's syndrome was made. Preoperative consideration of this rare diagnosis is important for treatment and surgical management. PMID:2221468

  9. NATO in History and Civics Textbooks: The West German Case.

    Fritzsche, K. Peter


    When analyzing the degree to which a balanced presentation of NATO is achieved in West German history and civics textbooks, two standards may be used: first, inclusion of information on NATO's formation, aims, strategies and achievements; and, second, inclusion of the criticisms that have been leveled at NATO from various points of view. This…

  10. Industrialization: Different Approaches and Case Studies Industrialization: Different Approaches and Case Studies

    Keith Griffin


    Industrialization: Different Approaches and Case Studies This paper enquires whether an industrialisation policy designed by the state might be successful in achieving industrialisation and development in the third world. Three common approaches to industrialisation are analysed in terms of their structural features and consequences: import substitution, capital goods sector promotion, and manufacturing export promotion. Associating these strategies to Brazil, India and South Korea, respectiv...

  11. United States -- Mexican joint ventures: A case history approach

    Moore, N.L.; Chidester, R.J.; Hughes, K.R.; Fowler, R.A.


    Because the Mexican government has encouraged investment in Mexico by increasing the percentage of ownership of a Mexican business that a US company can hold, joint ventures are more attractive now than they had been in the past. This study provides preliminary information for US renewable energy companies who are interested in forming a joint venture with a Mexican company. This report is not intended to be a complete reference but does identifies a number of important factors that should be observed when forming a Mexican joint venture: (1)Successful joint ventures achieve the goals of each partner. (2)It is essential that all parties agree to the allocation of responsibilities. (3)Put everything in writing. (4)Research in depth the country or countries in which you are considering doing business.

  12. History-sensitive versus future-sensitive approaches to security in distributed systems

    Hernandez, Alejandro Mario; Nielson, Flemming

    information flow rather than mere access control. We show in this paper that it is beneficial to augment this approach with history based components as is the traditional approach in reference monitor based approaches to mandatory access control. Our developments are performed in an aspect......-oriented coordination language aiming to describe the Bell-LaPadula policy as elegantly as possible. Furthermore, the resulting language has the capability of combining both history- and future-sensitive policies, providing even more flexibility and power....

  13. Using Sources to Teach History for the Common Good: A Case of One Teacher's Purpose

    Gradwell, Jill M.


    The teacher who is the focus of this interpretive case study, uses primary sources regularly with her students in ambitious ways but does so less from the current reform efforts, recent history education scholarship, or the climate of accountability and more from her individual goals for history education, most significantly, to prepare her…

  14. Number theory an approach through history from Hammurapi to Legendre

    Weil, André


    Number Theory or arithmetic, as some prefer to call it, is the oldest, purest, liveliest, most elementary yet sophisticated field of mathematics. It is no coincidence that the fundamental science of numbers has come to be known as the "Queen of Mathematics." Indeed some of the most complex conventions of the mathematical mind have evolved from the study of basic problems of number theory. André Weil, one of the outstanding contributors to number theory, has written an historical exposition of this subject; his study examines texts that span roughly thirty-six centuries of arithmetical work — from an Old Babylonian tablet, datable to the time of Hammurapi to Legendre’s Essai sur la Théorie des Nombres (1798). Motivated by a desire to present the substance of his field to the educated reader, Weil employs an historical approach in the analysis of problems and evolving methods of number theory and their significance within mathematics. In the course of his study Weil accompanies the reader into the worksho...

  15. Selected case histories and epidemiologic examples of human mercury poisoning

    Gerstner, H.B.; Huff, J.E.


    Clinical aspects of mercury poisoning are described for elemental mercury, inorganic mercury compounds, and organic mercury compounds. Critical targets of poisoning by elemental mercury are the lungs and the central nervous system. A case of acute pulmonary injury and a case of chronic brain injury are described. The effects of inorganic mercury compounds are chiefly injuries to the alimentary canal and kidneys. Two cases of acute intoxication from these compounds are described. An epidemiologic study on Africans suffering from the nephrotic syndrome showed that aminomercuric chloride was the causative agent. Organic mercury compounds are discussed with regard to the following: individual cases of the methylmercury syndrome in adults; individual cases of prenatal methylmercury intoxication; epidemic outbreaks of methylmercury poisoning; epidemiology of methylmercury poisoning through dressed seed grain; and epidemic outbreaks of poisonings by organomercurials other than methylmercury. (HLW)

  16. Discovery and geology of the Desert Peak geothermal field: a case history. Bulletin 97

    Benoit, W.R.; Hiner, J.E.; Forest, R.T.


    A case history of the exploration, development (through 1980), and geology of the Desert Peak geothermal field is presented. Sections on geochemistry, geophysics, and temperature-gradient drilling are included.

  17. A Posterior Lingual Sulcoplasty in Implant Therapy: A Case History Report.

    Perri de Carvalho, Paulo Sergio; Janjacomo, Luiz Antonio; Ponzoni, Daniela


    This case history report describes the deepening of a patient's posterior mandibular lingual sulcus in combination with an acrylic resin guiding device fixed to an osseointegrated dental implant to maintain the patency of the new sulcular depth. PMID:26929959

  18. United States refugee and asylum policy: history and current approaches.

    Stein, B N


    For most of the 4 decades since World War II, US refugee and asylum policy has been generous but ad hoc, discretionary, and highly variable favoring some refugee groups and discriminating against or ignoring others. This paper: 1) tries to clarify some of the terminology of the refugee field and explains the distinctions between asylum and resettlement, 2) provides some of the historical background that has brought the US to its present condition and chronicles the US overseas refugee admission policy, and 3) examines some asylum issues and other refugee issues. Asylum is far more difficult to control than refugee resettlement. As a result of what is perceived to be abuse of the asylum system, the US has joined the growing tendency of states to treat asylum-seekers as illegal migrants. The greatest problem with American asylum policy is its lack of fairness of application; many critics believe that foreign policy factors dominate asylum hearings rather than the individual merits of the case. The 3 classic solutions to this problem are resettlement, voluntary repatriation, and settlement in a country of 1st asylum. Only in the Indochinese refugee crisis has resettlement been widely used as a solution for 3rd World refugees. Nationalism and nation-building conflicts are at the root of many refugee movements; hosts are often no less nationalistic than source countries, thus many non-integrated refugees live in peril. Developed country political will and statesmanship are needed to revive resettlement as a durable solution. Resettlement may be difficult and costly, but the pluralistic western societies do offer an integrated new life. PMID:12178938

  19. Operations research at CSIR: A brief history through cases

    HW Ittmann


    Full Text Available Apart from work in the mining industry during the 1950s, the first real Operations Research (OR group in South Africa was established at CSIR in the early 1960s. Those initially involved in this group played a significant role in establishing OR at various universities in South Africa. The OR group at CSIR did, however, continue and today the group still exists. This paper presents a brief history of this group and endeavours to provide a glimpse of some of the projects conducted over the many years since its establishment.

  20. Operations research at CSIR: A brief history through cases

    HW Ittmann; FE van Dyk; IA Meyer; SJJ van Rensburg


    Apart from work in the mining industry during the 1950s, the first real Operations Research (OR) group in South Africa was established at CSIR in the early 1960s. Those initially involved in this group played a significant role in establishing OR at various universities in South Africa. The OR group at CSIR did, however, continue and today the group still exists. This paper presents a brief history of this group and endeavours to provide a glimpse of some of the projects conducted over the ma...

  1. Peritoneal lymphomatosis confounded by prior history of colon cancer: a case report

    It is well known that carcinomas of the gastrointestinal tract are frequently associated with peritoneal carcinomatosis. In contrast to that entity extensive involvement of the peritoneal cavity with malignant lymphoma is rare. This is the first case reporting coexistence of peritoneal lymphomatosis and a previous history of colon cancer, which is a highly challenging clinical situation. If not aware of this unusual condition medical history, radiologic finding and laboratory data alone can lead to wrong diagnosis as in this case

  2. New approaches within the history and theory of medicine and their relevance for homeopathy

    Schmidt, Josef M.


    Conventional sciences have brought forth a wealth of knowledge and benefits, but they have not always been clear and precise about their legitimate scope and methodological limitations. In contrast, new and critical approaches in modern sciences question and reflect their own presuppositions, dependencies, and constraints. Examples are quantum physics, theory and history of science, as well as theory and history of medicine, sociology, and economics. In this way, deprecative dogmatism and ani...

  3. Tourism Planning: A Case Based Approach

    Muhammad Khalid Khan


    Full Text Available This study is an attempt to investigate the tourism marketing and attraction strategies adopted by various countries. A case study based approach is adopted in this study. On the basis of investigation of tourism development strategies adopted by various countries, suggestions are also made at the end. These suggestions are aimed to increase visitors our tourists’ base in a country. These suggestions can be used by any country to increase visitors or tourists. Future directions are also given at the end.

  4. Using History To Teach Scientific Method: The Case of Argon.

    Giunta, Carmen J.


    Explains the goals of a course to teach non-science majors how scientists think. Approaches science primarily as a way of knowing rather than as a body of knowledge and conveys the scientific method as an empirical endeavor. (DDR)

  5. Dynamic protein-protein interaction subnetworks of lung cancer in cases with smoking history

    Wei Yu


    Full Text Available Smoking is the primary cause of lung cancer and is linked to 85% of lung cancer cases. However, how lung cancer develops in patients with smoking history remains unclear. Systems approaches that combine human protein-protein interaction (PPI networks and gene expression data are superior to traditional methods. We performed these systems to determine the role that smoking plays in lung cancer development and used the support vector machine (SVM model to predict PPIs. By defining expression variance (EV, we found 520 dynamic proteins (EV>0.4 using data from the Human Protein Reference Database and Gene Expression Omnibus Database, and built 7 dynamic PPI subnetworks of lung cancer in patients with smoking history. We also determined the primary functions of each subnetwork: signal transduction, apoptosis, and cell migration and adhesion for subnetwork A; cell-sustained angiogenesis for subnetwork B; apoptosis for subnetwork C; and, finally, signal transduction and cell replication and proliferation for subnetworks D-G. The probability distribution of the degree of dynamic protein and static protein differed, clearly showing that the dynamic proteins were not the core proteins which widely connected with their neighbor proteins. There were high correlations among the dynamic proteins, suggesting that the dynamic proteins tend to form specific dynamic modules. We also found that the dynamic proteins were only correlated with the expression of selected proteins but not all neighbor proteins when cancer occurred.

  6. High accuracy of family history of melanoma in Danish melanoma cases

    Wadt, Karin A W; Drzewiecki, Krzysztof T; Gerdes, Anne-Marie


    The incidence of melanoma in Denmark has immensely increased over the last 10 years making Denmark a high risk country for melanoma. In the last two decades multiple public campaigns have sought to increase the awareness of melanoma. Family history of melanoma is a known major risk factor but...... previous studies have shown that self-reported family history of melanoma is highly inaccurate. These studies are 15 years old and we wanted to examine if a higher awareness of melanoma has increased the accuracy of self-reported family history of melanoma. We examined the family history of 181 melanoma...... probands who reported 199 cases of melanoma in relatives, of which 135 cases where in first degree relatives. We confirmed the diagnosis of melanoma in 77% of all relatives, and in 83% of first degree relatives. In 181 probands we validated the negative family history of melanoma in 748 first degree...

  7. Development case histories: Tongonan and Palinpinon geothermal fields, Philippines

    The background on the general scenario of energy resource development in the country is described. Highlights of the exploration history of the Tongonan and Palinpinon geothermal fields in the Philippines are then presented. This is discussed in conjunction with the strategies and policies taken in the development of each field. Finally, the common policies and contrasting development strategies are compared and evaluated. The conclusion derived is that the development strategy decisions at Tongonan are influenced by the regional power demand, topography, and the large extent of the resource. In contrast, the development at Palinpinon is less constrained by the external influence of regional power needs, but, instead, is significantly dominated by the limitations imposed by the rugged terrain and the physical characteristics of the resource area. Such comparison demonstrates the site-specific nature of geothermal development. (auth.). 8 figs.; 2 refs

  8. Case-History Explorations of Scientifically Significant Earth-System Events

    Hall, M. K.; Walker, C. S.; Mayhew, M. A.


    We are developing case histories of recent and ancient natural disasters to provide students a means of learning fundamental earth system science and applying their new understanding to mitigating disasters in the future. We distinguish case histories from case studies in that they investigate real problems that are likely to recur, as opposed to hypothetical but realistic problem scenarios. Students explore the scientific and societal conditions that caused or fueled a disaster; investigate whether the outcome might have been different under different conditions; explore how the disaster has shaped our scientific and societal understanding of such events; and propose appropriate responses and preparation measures for future events. Each case history allows for multiple directions of investigation by individuals or teams. The case histories incorporate actual datasets used by scientists to analyze the event, in addition to analysis tools such as GIS, Excel, and Google Earth. These classroom resources are appropriate for undergraduate earth system majors from first year to third year. We have completed and are field testing case histories for the 1994 M6.7 Northridge earthquake and the Super Tornado Outbreak of 1974, as well as other notable tornado outbreaks. Additionally, we are developing case histories for the 1700 Cascadia mega-tsunami and the 2005 Hurricane Katrina. Research studies of each of these events have resulted in significant changes to our understanding of the earth processes that caused them, and have spawned renewed interest in hazard mitigation. Each case history also incorporates the human element, presented from both a scientific and eyewitness perspective. Field testing includes evaluation of scientific accuracy, usability and pedagogical effectiveness, as described in the DLESE peer-review-system criteria ( by field testers and external technical experts.

  9. A case of astrocytoma, 19 year history after BNCT

    A 39-year-old man had received Boron Neutron Capture Therapy (BNCT) in 1987 for a Grade II Astrocytoma. He gradually exacerbated and received a second operation in 1994. The mass taken in the second operation is almost competent with radiation necrosis. Following that, he shows no signs of recurrence. Currently, he has returned to full time employment in physical labor. This case suggests effectiveness of BNCT for rather low-grade astrocytomas. (author)

  10. Cooperative Learning about Nature of Science with a Case from the History of Science

    Wolfensberger, Balz; Canella, Claudia


    This paper reports a predominantly qualitative classroom study on cooperative learning about nature of science (NOS) using a case from the history of science. The purpose of the research was to gain insight into how students worked with the historical case study during cooperative group work, how students and teachers assessed the teaching unit,…

  11. Sustainable geothermal utilization - Case histories; definitions; research issues and modelling

    Sustainable development by definition meets the needs of the present without compromising the ability of future generations to meet their own needs. The Earth's enormous geothermal resources have the potential to contribute significantly to sustainable energy use worldwide as well as to help mitigate climate change. Experience from the use of numerous geothermal systems worldwide lasting several decades demonstrates that by maintaining production below a certain limit the systems reach a balance between net energy discharge and recharge that may be maintained for a long time (100-300 years). Modelling studies indicate that the effect of heavy utilization is often reversible on a time-scale comparable to the period of utilization. Thus, geothermal resources can be used in a sustainable manner either through (1) constant production below the sustainable limit, (2) step-wise increase in production, (3) intermittent excessive production with breaks, and (4) reduced production after a shorter period of heavy production. The long production histories that are available for low-temperature as well as high-temperature geothermal systems distributed throughout the world, provide the most valuable data available for studying sustainable management of geothermal resources, and reservoir modelling is the most powerful tool available for this purpose. The paper presents sustainability modelling studies for the Hamar and Nesjavellir geothermal systems in Iceland, the Beijing Urban system in China and the Olkaria system in Kenya as examples. Several relevant research issues have also been identified, such as the relevance of system boundary conditions during long-term utilization, how far reaching interference from utilization is, how effectively geothermal systems recover after heavy utilization and the reliability of long-term (more than 100 years) model predictions. (author)

  12. Turner syndrome case report: A multidisciplinary approach

    Guilherme Thiesen


    Full Text Available Turner syndrome (TS was fi rst reported in the literature in 1938 by Laurel Thatcher Ulrich and Henry Turner. This chromosomal alteration only affects female individuals, who have monosomy of the X chromosome. Only one X chromosome is functional, while the other sexual chromosome is either absent or abnormal. The main oral characteristics are transverse defi ciency of the maxilla, mandibular retrognathism, anterior open bite, cleft palate, premature dental eruption, and alterations in the shape, size and thickness of teeth, with an increased number of roots on the fi rst and second premolars. The objective of this study was to describe the clinical case of a patient with TS undergoing orthodontic treatment, and to emphasize the importance of a multidisciplinary approach to patients with TS.

  13. Failure of marine boiler tube: A case history

    V. A. Dere


    Full Text Available An interesting case of marine boiler tube failure is described. As a result of local overheating, a ballooning burst occurred in a boiler tube. Evidence showed that a temperature of over 1600/degree/F (87/degree/C had been reached before rupture. The presence of a thin film of copper arising from the auxiliary equipments of the boiler, caused pittings in the metal. failure was thus attributed to local overheating accelerated by an inner deposit of heat insulating scale.

  14. Multiphase flow measurement to improve well performance : history cases

    Arevalo-Villagran, J.A.; Gutierrez-Acosta, T.; Martinez-Romero, N. [Pemex E and P, Mexico (Mexico)


    PEMEX Exploration and Production (PEMEX E and P) is running a key development plan to improve the reservoir management, well productivity and ultimate recovery of all fields in Mexico. Part of this project involves gathering reliable well production data in real time and on a regular basis. PEMEX E and P performed a study of available technologies in well testing in order to select a system that meets the needs of the region while simplifying the field logistics and minimizing environmental impact. The chosen system involved multiphase flow meters (MPFM). This paper detailed the preparation and temporary deployment of MPFM technology for a series of multi-rate well tests that were conducted on low and high gas-liquid ratio (GLR). The paper described the MPFM technology including applications and characteristics. MPFM technology implemented in PEMEX E and P was then outlined. Study cases were presented on the following topics: measurement uncertainties; repeatability test examples; repeatability and comparative test examples; and wellstream behavior cases. Some limitations of multiphase meters and key factors for success and lessons learned were also identified. It was concluded that the use of multiphase flow meters in PEMEX through a turnkey well testing service was a successful option for well testing operations. 8 refs., 6 tabs., 13 figs.

  15. What's in a Domain: Understanding How Students Approach Questioning in History and Science

    Portnoy, Lindsay Blau; Rabinowitz, Mitchell


    How students ask questions as they learn has implications for understanding, retention, and problem solving. The current research investigates the influence of domain, age, and previous experience with content on the ways students approach questioning across history and science texts. In 3 experiments, 3rd-, 8th-, and 10th-grade students in large…

  16. A Time Sequence-Oriented Concept Map Approach to Developing Educational Computer Games for History Courses

    Chu, Hui-Chun; Yang, Kai-Hsiang; Chen, Jing-Hong


    Concept maps have been recognized as an effective tool for students to organize their knowledge; however, in history courses, it is important for students to learn and organize historical events according to the time of their occurrence. Therefore, in this study, a time sequence-oriented concept map approach is proposed for developing a game-based…

  17. The case for an emergentist approach

    Bertus van Rooy


    Full Text Available This paper sets out an argument in favour of emergentism as an alternative theoretical paradigm to nativism, arguing that it offers a coherent, evidence-based account of language structure, language acquisition, language evolution, and language change. A number of key tenets of the nativist approach are summarised first, including the nature of the presumed complexity of language, the poverty of the input argument against the learnability of language, the assumption of parsimony, the view of language as innate, biological faculty, and the view of the primary function of language as cognitive representation rather than communication. This is followed by a presentation of the emergentist alternative, which is centred on the notion of the grammatical construction as central unit in the emergentist approach. The properties of constructions, and how they can come into being with recourse to only domain-general cognitive processes, are presented, before the implications of this view for language structure, language acquisition, language evolution and language change are discussed. Additional points of difference with the nativist position are highlighted, including the assumptions of non-parsimonious storage and the centrality of communicative interaction in the ontogenetic and phylogenetic development of language. Throughout the presentation, arguments are illustrated with reference to aspects of complementation in the Germanic languages. The article concludes with a detailed case study of the wh-extraction construction, drawing on an analysis of corpus data from Afrikaans, to demonstrate how the construction-based, emergentist approach leads to an insightful analysis of a well-known construction, without having to make extensive assumptions about the underlying linguistic complexity and the need for innate mechanisms to enable the acquisition of such a complex construction.

  18. Mathematical representations in science: a cognitive-historical case history.

    Tweney, Ryan D


    The important role of mathematical representations in scientific thinking has received little attention from cognitive scientists. This study argues that neglect of this issue is unwarranted, given existing cognitive theories and laws, together with promising results from the cognitive historical analysis of several important scientists. In particular, while the mathematical wizardry of James Clerk Maxwell differed dramatically from the experimental approaches favored by Michael Faraday, Maxwell himself recognized Faraday as "in reality a mathematician of a very high order," and his own work as in some respects a re-representation of Faraday's field theory in analytic terms. The implications of the similarities and differences between the two figures open new perspectives on the cognitive role of mathematics as a learned mode of representation in science. PMID:25163456

  19. A case history of successful nuclear power plant licensing

    Statewide siting studies, site-selection, site characterization and receipt of a construction permit for the Palo Verde Project were accomplished in 50 months. This achievement was made possible by (1) providing experienced project management leadership by the licensee, (2) retaining an attorney experienced with Nuclear Regulatory Commission (NRC) licensing, (3) developing a strategy for decision-making and licensing that was responsive to the needs of the NRC, (4) selecting a qualified investigative team of contractors and subcontractors, and (5) installing an architect/engineer to manage the contractors and provide independent review. A similar approach, applied to a high-level radioactive-waste repository program, should contribute to comparable licensing success

  20. How does one do the history of disability in antiquity? One thousand years of case studies.

    Laes, Christian


    Exploring literary sources from the first century BCE up to the eleventh century CE, this article demonstrates how the history of disabilities in antiquity can go further than just collecting 'interesting case histories'. Using a model developed by Michel Vovelle, the sources are interpreted on different levels, taking into account both the cultural context in which the text arose and the intentions of the author. PMID:23057206

  1. Nodular glomerulosclerosis in patients’ without history of diabetes mellitus: a case report

    Helal, Imed; Goucha, Rym; Karoui, Cyrine; Abderrahim, Ezzedine; Hamida, Fethi Ben; Elyounsi, Fethi; Maiz, Hedi Ben; Abdallah, Taieb Ben; Kheder, Adel


    Introduction Diabetic nephropathy can occur during the course of both type1 and type 2 diabetes mellitus. The characteristic lesions are diffuse or nodular (Kimmelsteil-Wilson) diabetic glomerulosclerosis. The reported cases represent unusual presentations of diabetes mellitus. Case presentation We report the case of a 49-year-old man without prior history of diabetes mellitus who presented with rapidly progressive renal failure and whose renal biopsy revealed nodular (Kimmelsteil-Wilson) glo...

  2. Study of clinicopathological factors, surgical approaches and their outcome in 20 cases of pilonidal sinus

    Rajalakshmi G; R. N. Raikar; Harshavardhan Kushal Shetty; Swathi C. Prabhu; Pratheek Sharma


    Background: Aim of the study was to study the age, incidence, occupational factor, history of presenting illness, hospital stay before and after surgery, various types of surgical approaches and their outcome in the form of cosmetic outcome and recurrence rate in 20 cases of pilonidal sinus done in 2012-13 in SIMS - Shivamogga Institute of Medical Sciences. Methods: Primary closure, healing by secondary contracture. Results: Out of the 20 cases operated for pilonidal sinus, 12 were male...

  3. [Electrical burns in children. 3 years of case histories].

    Caneira, E; Serafim, Z; Duarte, R; Leal, M J


    The Burn Unit of Dona Estefânia Hospital admitted a total of 454 patients from January 1992 to January 1995, 24 of these patients suffered from electric shock. Of these 24 patients 3 suffered burns in the mouth, 15 in one or both hands and 6 multiple burns. In 19 patients the burns were up to 1%. A description is made of 5 cases, male children between the ages of 9 and 13 years, which were deemed severe. The incidents occurred outdoors with different voltages and in activities considered of ludic or experimental nature: two on the roof of a house, two with railway cables and one with an electrical cable in a port zone. The burnt areas vary between 4% and 70%, all of them 2nd and 3rd degree, with hospitalization lasting from 36 to 116 days. In addition to early and coordinated medical and rehabilitative treatment, according to individual needs, a description is also made of the cutaneous sequelae (deforming cicatrices, bridles), neurologic and psychologic sequelae, with emphasis on a patient who underwent amputation of the lower left leg and 4th and 5th ranges of the right foot. It was concluded that measures should be taken in education and legislation to prevent these accidents. Relevance is given to the need for a multidisciplinary team and specialized center for the treatment of these patients. PMID:9254529

  4. Case history of MSW-to-energy financings

    The development of solid waste treatment facilities is dependent upon the developer having sufficient resources to fund the development of a project and the ability of the project to be financed. The access to capital to develop, construct and operate a facility is the key component of the development process. The author is not diminishing the need for long-term waste agreements, the advantages of a superior technology or the benefit of experience. However, without capital, a project will never be initiated and the other components are immaterial. This paper reviews development financing with a case study of an environmental development company with a new technology and project financing with a comparison of four financings of Waste to Energy (WTE) facilities. Prior to reviewing the financings, the components of a project including the participants, agreements, and cash flows are discussed to establish a foundation for the later discussion. The analysis is not intended to be directly applicable to material recovery and composting facilities, however, many issues are common to all environmental facilities

  5. Bioremediation of contaminated soil: Strategy and case histories

    Microorganisms are capable of degrading many kinds of xenobiotic compounds and toxic chemicals. These microorganisms are ubiquitous in nature and there are numerous cases in which long-term contamination of soil and groundwater has been observed. The persistence of the contamination is usually caused by the inability of micro-organisms to metabolize these compounds under the prevailing environmental conditions. Two general reasons account for the failure of microbes to degrade pollutants in any environment: (1) inherent molecular recalcitrance of the contaminants and (2) environmental factors. The inherent molecular recalcitrance is usually associated with xenobiotic compounds where the chemical structure of the molecule is such that microbes and enzymes required for its catabolism have not evolved yet in nature. The environmental factors include a range of physicochemical conditions which influence microbial growth and activity. Biological remediation of contaminated sites can be accomplished using naturally-occurring microorganisms to treat the contaminants. Only particular groups of microorganisms are capable of decomposing specific compounds. The development of a bioremediation program for a specific contaminated soil system usually includes: thorough site/soil/waste characterization; treatability studies; and design and implementation of the bioremediation plan. The results of in situ and ex situ treatment programs involving the cleanup of petroleum hydrocarbon-contaminated soil will be discussed in detail. The paper will address key issues affecting the success of the bioremediation process such as nutrient transport, metal precipitation and potential soil clogging, microbial inoculation, etc

  6. The Crow Butte ISL project: A case history

    The Crow Butte project, located in the northwest corner of Nebraska, is one of four commercial in-situ uranium leach mines currently operating in the United States. The facility began commercial production in April 1991 some 12 years after the discovery of the sandstone, roll front uranium deposit. The ore body lies about 700 feet (213 metres) below the surface in a highly permeable aquifer with excellent shale/clay confinement above and below. The exploration and development period included ore body delineation, pilot testing with successful demonstration of aquifer restoration, feasibility study, environmental licensing, engineering design, and facilities construction. The commercial startup is taking a phased approach with current annual production of some 700,000 pounds U3O8; increasing to a planned one million pounds by 1997. Operations during the four years of commercial production, using alkaline leach chemistry, have gone smoothly with no major technical or regulatory problems. Capital costs for construction of the 3,500 gallon per minute (221 litres per second) capacity plant were minimized by acquiring used processing equipment from closed in situ leach uranium mines located in Texas and Wyoming. The total manpower requirement of only 25 on-site employees contributes to the low production costs. (author). 9 refs, 16 figs, 4 tabs

  7. Case history update: RCRA waste site remediation by telerobotic methods

    This paper presents a summary of the first 18 months of closure work at the Kerr Hollow Quarry site on the DOE reservation at Oak Ridge, Tennessee. Closure work includes recovery and processing of explosive, toxic and radioactive waste. As of January 1992, more than 10,000 items had been processed and removed from the quarry, exclusively by remotely operated equipment. Drums, buckets, tubing assemblies and other containers are being shredded to react any explosive contents. Concussion and projectiles are controlled by operating the shredder under 30 feet of water. The performance of the shredder, the effectiveness of the approach, production rates and maintenance requirements are addressed in the paper. To avoid exposing personnel to hazards, all work in the restricted area is done remotely. Two remotely operated vehicles were used to clear a pad, set a stand and install the 200-hp shredder. Some materials exposed by shredding are stable in water but react when exposed to air. In addition, radioactive items are mixed in with the other wastes. Safety considerations have therefore led to use of remote techniques for handling and examining materials after recovery. Deteriorated gas cylinders, which may contain pressurized toxic materials, are recovered and handled exclusively by remotely operated equipment. Waste retrieval work at the Kerr Hollow Quarry has proven the capability and cost-effectiveness of remotely operated equipment to deal with a wide variety of hazardous materials in an unstructured waste site environment. A mixture of radioactive materials, toxic chemicals, explosives and asbestos has been found and processed. Remotely operated vehicles have retrieved, sorted and processed more than 10,000 items including drums, buckets, pipe manifolds, gas cylinders and other containers

  8. Unified approach for determining the enthalpic fictive temperature of glasses with arbitrary thermal history

    Guo, Xiaoju; Potuzak, M.; Mauro, J. C.;


    We propose a unified routine to determine the enthalpic fictive temperature of a glass with arbitrary thermal history under isobaric conditions. The technique is validated both experimentally and numerically using a novel approach for modeling of glass relaxation behavior. The technique is...... applicable to glasses of any thermal history, as proved through a series of numerical simulations where the enthalpic fictive temperature is precisely known within the model. Also, we demonstrate that the enthalpic fictive temperature of a glass can be determined at any calorimetric scan rate in excellent...

  9. Case Studies In Business Market Research: An Abductive Approach

    DuBois, A.; Gadde, L


    Case studies are frequently used in industrial network research. In this paper we discuss the difficulties and opportunities characterizing the case study approach. In particular we deal with single case research aiming at theory generation. For this purpose we suggest an approach based on 'systematic combining' grounded in an 'abductive' logic.

  10. Single-Case Research Methods: History and Suitability for a Psychological Science in Need of Alternatives.

    Hurtado-Parrado, Camilo; López-López, Wilson


    This paper presents a historical and conceptual analysis of a group of research strategies known as the Single-Case Methods (SCMs). First, we present an overview of the SCMs, their history, and their major proponents. We will argue that the philosophical roots of SCMs can be found in the ideas of authors who recognized the importance of understanding both the generality and individuality of psychological functioning. Second, we will discuss the influence that the natural sciences' attitude toward measurement and experimentation has had on SCMs. Although this influence can be traced back to the early days of experimental psychology, during which incipient forms of SCMs appeared, SCMs reached full development during the subsequent advent of Behavior Analysis (BA). Third, we will show that despite the success of SCMs in BA and other (mainly applied) disciplines, these designs are currently not prominent in psychology. More importantly, they have been neglected as a possible alternative to one of the mainstream approaches in psychology, the Null Hypothesis Significance Testing (NHST), despite serious controversies about the limitations of this prevailing method. Our thesis throughout this section will be that SCMs should be considered as an alternative to NHST because many of the recommendations for improving the use of significance testing (Wilkinson & the TFSI, 1999) are main characteristics of SCMs. The paper finishes with a discussion of a number of the possible reasons why SCMs have been neglected. PMID:25876996

  11. [Oral life history as a humanistic strategy for the approach between caregivers and the elderly].

    Mota, Carla Souza; Reginato, Valdir; Gallian, Dante Marcello Claramonte


    This study describes the use of oral life history as a strategy for the approach between caregivers and the elderly. The aim is to contribute to humanization of the relationship between health professionals and patients. A qualitative descriptive study included a sample of seven elderly individuals of both sexes and 65 years or older. Open, semi-structured interviews were conducted, producing narratives of the patients' life histories. The narratives were later returned to the participants in the form of personalized booklets for use as they saw fit. The approach contributed to the formation and strengthening of bonds between the nursing staff and the elderly and enhanced both the human and therapeutic aspects of this relationship. PMID:24005933

  12. New approaches within the history and theory of medicine and their relevance for homeopathy.

    Schmidt, Josef M


    Conventional sciences have brought forth a wealth of knowledge and benefits, but they have not always been clear and precise about their legitimate scope and methodological limitations. In contrast, new and critical approaches in modern sciences question and reflect their own presuppositions, dependencies, and constraints. Examples are quantum physics, theory and history of science, as well as theory and history of medicine, sociology, and economics. In this way, deprecative dogmatism and animosity amongst sciences ought to be lessened, while the field opens up for each science to redefine its appropriate place in society. This would appear to be a chance for homeopathy, as new approaches, especially within the social and economic sciences, suggest that being a follower of Samuel Hahnemann (1755-1843) may have advantages and privileges that conventional medicine seems to be lacking and whose relevance was overlooked during the rise of economic thinking in the last two centuries. PMID:24685422

  13. The introduction history of invasive garden ants in Europe: Integrating genetic, chemical and behavioural approaches

    Boomsma Jacobus J; Kronauer Daniel JC; Drijfhout Falko P; Ugelvig Line V; Pedersen Jes S; Cremer Sylvia


    Abstract Background The invasive garden ant, Lasius neglectus, is the most recently detected pest ant and the first known invasive ant able to become established and thrive in the temperate regions of Eurasia. In this study, we aim to reconstruct the invasion history of this ant in Europe analysing 14 populations with three complementary approaches: genetic microsatellite analysis, chemical analysis of cuticular hydrocarbon profiles and behavioural observations of aggression behaviour. We eva...

  14. The attribution approach to emotion and motivation: History, hypotheses, home runs, headaches/heartaches

    Weiner, B.


    © The Author(s) 2014. In this article the history of the attribution approach to emotion and motivation is reviewed. Early motivation theorists incorporated emotion within the pleasure/pain principle but they did not recognize specific emotions. This changed when Atkinson introduced his theory of achievement motivation, which argued that achievement strivings are determined by the anticipated emotions of pride and shame. Attribution theorists then suggested many other emotional reactions to s...

  15. On the validity of the case-time-control design for autocorrelated exposure histories

    Jensen, Aksel Karl Georg; Gerds, Thomas Alexander; Weeke, Peter; Torp-Pedersen, Christian; Andersen, Per Kragh


    review the mathematical assumptions underlying the case-time-control design and examine sensitivity to deviations from the assumed independence of within-individual exposure history. Results from simulating various scenarios suggest that the design is quite robust to deviations from this model assumption...

  16. Case history of a painful, obscure defect of a child's patella

    The case history reported is that of a 12-year-old boy who suffered from an obscure, painful, unilateral defect at the patella. The X-ray and MRI morphologies of the lesion are described, and the aspects of possible differential diagnoses are discussed. (orig./CB)

  17. Teaching History with Comic Books: A Case Study of Violence, War, and the Graphic Novel

    Decker, Alicia C.; Castro, Mauricio


    In this essay, the authors present a case study that demonstrates how graphic novels can be utilized in the history classroom. More specifically, they discuss the benefits (and challenges) of using comic books to teach undergraduates about war and violence. While much of their discussion focuses on the historical particularities of Uganda, their…


    Three case histories are presented to illustrate the problems encountered using some monitoring well installation, purging, and sampling techniques. Hollow-stem augering was found to pose problems during the installation of monitoring wells in terms of potential for cross-contami...


    Influence of Exposure History on Vitellogenin Induction in Medaka: a Case of "Estrogen Memory"? (Abstract). Mar. Environ. Res. 50(1-5):196. In this study, we exposed female medaka to aqueous solutions of o,p'-DDT until tissues residues reached approximately 100 g/g. Male...


    Othman Mohd Yusop; Suhaimi Ibrahim


    Software Maintenance Testing is essential during software testing phase. All defects found during testing must undergo a re-test process in order to eliminate the flaws. By doing so, test cases are absolutely needed to evolve and change accordingly. In this paper, several maintenance testing approaches namely regression test suite approach, heuristic based approach, keyword based approach, GUI based approach and model based approach are evaluated based on software evolution taxonomy framework...

  1. The Development of Dalton's Atomic Theory as a Case Study in the History of Science: Reflections for Educators in Chemistry

    Viana, Helio Elael Bonini; Porto, Paulo Alves


    The inclusion of the history of science in science curricula--and specially, in the curricula of science teachers--is a trend that has been followed in several countries. The reasons advanced for the study of the history of science are manifold. This paper presents a case study in the history of chemistry, on the early developments of John…

  2. Sub-modeling approach for obtaining structural stress histories during dynamic analysis

    T. T. Rantalainen


    Full Text Available Modern machine structures are often fabricated by welding. From a fatigue point of view, the structural details and especially, the welded details are the most prone to fatigue damage and failure. Design against fatigue requires information on the fatigue resistance of a structure's critical details and the stress loads that act on each detail. Even though, dynamic simulation of flexible bodies is already current method for analyzing structures, obtaining the stress history of a structural detail during dynamic simulation is a challenging task; especially when the detail has a complex geometry. In particular, analyzing the stress history of every structural detail within a single finite element model can be overwhelming since the amount of nodal degrees of freedom needed in the model may require an impractical amount of computational effort. The purpose of computer simulation is to reduce amount of prototypes and speed up the product development process. Also, to take operator influence into account, real time models, i.e. simplified and computationally efficient models are required. This in turn, requires stress computation to be efficient if it will be performed during dynamic simulation. The research looks back at the theoretical background of multibody simulation and finite element method to find suitable parts to form a new approach for efficient stress calculation. This study proposes that, the problem of stress calculation during dynamic simulation can be greatly simplified by using a combination of Floating Frame of Reference Formulation with modal superposition and a sub-modeling approach. In practice, the proposed approach can be used to efficiently generate the relevant fatigue assessment stress history for a structural detail during or after dynamic simulation. Proposed approach is demonstrated in practice using one numerical example. Even though, examples are simplified the results show that approach is applicable and can be used as

  3. The Utilization of Local History in Teaching American Religious History: A Gilded Age and Progressive Era North Dakota Case Study

    Price, Christopher Neal


    Teachers of college-level courses on American religious history generally leave out the importance of local and regional histories when telling the story of religion in America. The study of local history provides a fertile ground for understanding broad national trends in a local context. This dissertation focuses upon a little-studied religious…

  4. A Surrogate-based Adaptive Sampling Approach for History Matching and Uncertainty Quantification

    Li, Weixuan; Zhang, Dongxiao; Lin, Guang


    A critical procedure in reservoir simulations is history matching (or data assimilation in a broader sense), which calibrates model parameters such that the simulation results are consistent with field measurements, and hence improves the credibility of the predictions given by the simulations. Often there exist non-unique combinations of parameter values that all yield the simulation results matching the measurements. For such ill-posed history matching problems, Bayesian theorem provides a theoretical foundation to represent different solutions and to quantify the uncertainty with the posterior PDF. Lacking an analytical solution in most situations, the posterior PDF may be characterized with a sample of realizations, each representing a possible scenario. A novel sampling algorithm is presented here for the Bayesian solutions to history matching problems. We aim to deal with two commonly encountered issues: 1) as a result of the nonlinear input-output relationship in a reservoir model, the posterior distribution could be in a complex form, such as multimodal, which violates the Gaussian assumption required by most of the commonly used data assimilation approaches; 2) a typical sampling method requires intensive model evaluations and hence may cause unaffordable computational cost. In the developed algorithm, we use a Gaussian mixture model as the proposal distribution in the sampling process, which is simple but also flexible to approximate non-Gaussian distributions and is particularly efficient when the posterior is multimodal. Also, a Gaussian process is utilized as a surrogate model to speed up the sampling process. Furthermore, an iterative scheme of adaptive surrogate refinement and re-sampling ensures sampling accuracy while keeping the computational cost at a minimum level. The developed approach is demonstrated with an illustrative example and shows its capability in handling the above-mentioned issues. Multimodal posterior of the history matching

  5. Accidental carbon monoxide poisoning presenting without a history of exposure: A case report

    Bennetto Luke


    Full Text Available Abstract Introduction Carbon monoxide poisoning is easy to diagnose when there is a history of exposure. When the exposure history is absent, or delayed, the diagnosis is more difficult and relies on recognising the importance of multi-system disease. We present a case of accidental carbon monoxide poisoning. Case presentation A middle-aged man, who lived alone in his mobile home was found by friends in a confused, incontinent state. Initial signs included respiratory failure, cardiac ischaemia, hypotension, encephalopathy and a rash, whilst subsequent features included rhabdomyolysis, renal failure, amnesia, dysarthria, parkinsonism, peripheral neuropathy, supranuclear gaze palsy and cerebral haemorrhage. Despite numerous investigations including magnetic resonance cerebral imaging, lumbar puncture, skin biopsy, muscle biopsy and electroencephalogram a diagnosis remained elusive. Several weeks after admission, diagnostic breakthrough was achieved when the gradual resolution of the patient's amnesia, encephalopathy and dysarthria allowed an accurate history to be taken for the first time. The patient's last recollection was turning on his gas heating for the first time since the spring. A gas heating engineer found the patient's gas boiler to be in a dangerous state of disrepair and it was immediately decommissioned. Conclusion This case highlights several important issues: the bewildering myriad of clinical features of carbon monoxide poisoning, the importance of making the diagnosis even at a late stage and preventing the patient's return to a potentially fatal toxic environment, and the paramount importance of the history in the diagnostic method.

  6. Graeco-Roman case histories and their influence on Medieval Islamic clinical accounts.

    Alvarez Millan, C


    The medieval Islamic medical tradition was the direct heir of Classical and Hellenistic medicine thanks to an unprecedented movement of translation into Arabic, commentaries and systematizations of Greek scientific texts. In the process of assimilation, not only theoretical principles, but also literary models of presenting medical knowledge were adopted, amongst them the case history. Since the clinical account can be used as a tool for medical instruction as well as an instrument for professional self-promotion, this study seeks to investigate which purpose most motivated Islamic physicians, and to demonstrate the extent to which they were influenced by the stylistic patterns which served them as a model. This article comprises an analysis of the context, literary devices and purpose of case histories of the Epidemics, Rufus of Ephesos and Galen, and compares them with those by the tenth-century Islamic physician Abu Bakr Muhammad b. Zakariya al-Razi. Author of the largest number of case histories preserved within the medieval Islamic medical literature, al-Razi's clinical records constitute an instrument with which to study and expand medical knowledge as well as providing useful material for students' medical training. Although al-Razi fused elements from the sources which served him as a model, he did not emulate Galen's use of the clinical history to assert himself in order to gain authority and prestige, but remained faithful to the Hippocratic essence. PMID:11623808

  7. An Amphibious Being: How Maritime Surveying Reshaped Darwin's Approach to Natural History.

    Sponsel, Alistair


    This essay argues that Charles Darwin's distinctive approach to studying distribution and diversity was shaped by his face-to-face interactions with maritime surveyors during the voyage of H.M.S. Beagle (1831-1836). Introducing their hydrographic surveying methods into natural history enabled him to compare fossil and living marine organisms, to compare sedimentary rocks to present-day marine sediments, and to compare landscapes to submarine topology, thereby realizing Charles Lyell's fanciful ambition for a superior form of geology that might be practiced by an "amphibious being." Darwin's theories of continental uplift, coral reef formation, and the origin of species all depended on his amphibious natural history. This essay contributes to our understanding of theorizing in nineteenth-century natural history by illustrating that specific techniques of observing and collecting could themselves help to generate a particular theoretical orientation and, indeed, that such practical experiences were a more proximate source of Darwin's "Humboldtian" interest in distribution and diversity than Alexander von Humboldt's writings themselves. Darwin's debt to the hydrographers became obscured in two ways: through the "funneling" of credit produced by single-authorship publication in natural history and the "telescoping" of memory by which Darwin's new theories made him recall his former researches as though he had originally undertaken them for the very purpose of producing the later theory. PMID:27439285

  8. An Automated Approach to Transform Use Cases into Activity Diagrams

    Yue, Tao; Briand, Lionel C.; Labiche, Yvan

    Use cases are commonly used to structure and document requirements while UML activity diagrams are often used to visualize and formalize use cases, for example to support automated test case generation. Therefore the automated support for the transition from use cases to activity diagrams would provide significant, practical help. Additionally, traceability could be established through automated transformation, which could then be used for instance to relate requirements to design decisions and test cases. In this paper, we propose an approach to automatically generate activity diagrams from use cases while establishing traceability links. Data flow information can also be generated and added to these activity diagrams. Our approach is implemented in a tool, which we used to perform five case studies. The results show that high quality activity diagrams can be generated. Our analysis also shows that our approach outperforms existing academic approaches and commercial tools.

  9. A Specialized Approach to the Case of Randall.

    Preston, Brian K.


    Responds to case of head-injured former engineering college student who presented for career counseling following automobile accident, three months in coma, and four years of rehabilitation therapy. Recommends vocational evaluation concentrating on a detailed work history, neuropsychological data, work samples, independent living skills…


    Sterns, James A.; Schweikhardt, David B.; Peterson, H. Christopher


    Many agricultural economists are not familiar with case study research, yet the approach is a useful means of collecting data, and building and testing theory. Case study research has a prescribed set of objectives, epistemology, methodology, and methods that have been developed and tested in a wide range of scholarly and pragmatic situations. This paper reviews these fundamentals, and then demonstrates the case study approach within the context of an agribusiness research project. This appli...

  11. An Integrative Psychotherapy Approach to Foster Community Engagement and Rehabilitation in Schizophrenia: A Case Study Illustration.

    Kukla, Marina; Whitesel, Frankie; Lysaker, Paul H


    This case study illustrates the use of a long-term integrative psychotherapy approach with a middle- aged man with chronic schizophrenia and a mood disorder. The case of "Holst" describes a man with a history of insecure attachment and trauma who later went on to contract a serious chronic illness, precipitating the onset of psychotic symptoms, depression, and chronic suicidal ideation, resulting in multiple hospitalizations. Combining metacognition-oriented therapy with elements of cognitive behavioral therapy and psychiatric rehabilitation, this approach fostered significantly improved community functioning and attainment of personal goals over time. Through the journey of therapy, the patient also developed a more coherent narrative about his life, established a stable sense of self, and became an active agent in the world. This case illustration demonstrates that these three different approaches can be used in a sequential and complementary fashion to foster recovery in the midst of serious physical and mental illness. PMID:26636563

  12. Case history report on East Mesa and Cerro Prieto geothermal fields

    Davis, DG.; Sanyal, S.K.


    Well log analysis as applied to the geothermal industry is one of the areas of technology in great need of further development. One means of improving log analysis technology is to study case histories of the past uses of log analysis as applied to specific fields. The project described in this report involved case history studies on two well-known geothermal areas in North America: the East Mesa field in California and the Cerro Prieto field in Mexico. Since there was considerably more pertinent material available on East Mesa, a major part of the effort on this project was devoted to studying the East Mesa field. One particular problem that first came to attention when studying the Cerro Prieto data was the difficulty in determining actual formation temperature at the time of logging. Since the temperature can have a significant effect on well log readings, an accurate temperature determination was considered to be important.

  13. Electronic history case register system in the Russian Radiology Research Center

    The system of electronic history case registration functioning for more than two years in the Russian Radiology Research Center is described. The system operates as a part of the net combining above 100 personal computers under the control of the operational media such as MS DOS and MS Windows. The Novell system is applied as the net software. The system consists functionally of the following basic subsystems: Registration office, Reception section, Therapeutic sections, Physician-consultants, Deputy director on therapeutic work, Medical statistics section, History case archives, System manager. The system makes it possible to accomplish exact estimation of the volume and costs of the therapeutical-diagnostic assistance to a patient and reliably determine the load on the personnel

  14. A Hybrid Approach to Case Teaching

    Swee-Liang Tan; Roy Ng Jin Hou


    We structure case based teaching using a combination of computer-support echnology and in-class activities. We create and design an on-line learning tool, Case Study On-line (CSOL) that enables instructor to structure the delivery of teaching resources and set up assignment tasks in the system. The tool enables tasks to be set in a way that they can be completed sequentially, and learning resources can be accessed only when required by students. Upon submission of their assignments, students ...

  15. Clinical characteristics of chemical sensitivity: an illustrative case history of asthma and MCS.

    Ross, G H


    A case history of the induction of asthma and chemical sensitivity in a 42-year-old registered nurse illustrates several of the characteristic features of multiple chemical sensitivity (MCS). This patient's problems started shortly after moving into a new home under construction, with associated chemical exposures. Other MCS patients report the onset of the condition with other chemical exposures such as those encountered at their places of work or use of pesticides at their residences. Patie...

  16. Performance of cancer cluster Q-statistics for case-control residential histories

    Sloan, Chantel D.; Jacquez, Geoffrey M; Gallagher, Carolyn M.; Ward, Mary H; Raaschou-Nielsen, Ole; Nordsborg, Rikke Baastrup; Meliker, Jaymie R.


    Few investigations of health event clustering have evaluated residential mobility, though causative exposures for chronic diseases such as cancer often occur long before diagnosis. Recently developed Q-statistics incorporate human mobility into disease cluster investigations by quantifying space- and time-dependent nearest neighbor relationships. Using residential histories from two cancer case-control studies, we created simulated clusters to examine Q-statistic performance. Results suggest ...

  17. Numerical Approach for Thermal History Modelling in Multi-Episodic Rifting Basins

    Bo Kang; Xinong Xie; Tao Cui


    Pre-existing models for thermal history modelling have shown deficiency in explicit algorithms to establish the quantitative relationship between maturity indices and thermal gradients in some sedimentary basins that experienced multi-episodic rifting evolution. In this study, a forward and inverse combination model (FICM) is proposed to estimate the vitrinite reflectance (Ro) and thermal gradients. The forward module is used to calculate Ro values. It couples the EASY%Ro model with burial history reconstruction with consideration of thermal gradient variations during basin evolution. The inverse module reconstructs histoical thermal gradients by calibrating cmputed Ro against measured Ro data. The time-temperature series is a necessary input for both forward and inverse modules. Sample density is a profound factor influencing the accuracy of modelling results. In order to obtain satisfying outputs, a sufficient sample density is required. Thermal gradients are assumed to vary linearly between two given samples. Modelling results of case studies indicate that the sensitivity of heating time to Ro evlution is differnt with thermal gradients depending on geolgoical setting. Three difffernt districts, which include the time-sensitive area, the temperature-sensitive area and the non-sensitive area, can be recognized on the the relationship map among Ro variations, heating time and geothermal gradients. This model can be applied to reconstruct the thermal history and maturation evolution in a basin that has undergone complex multi-episodic rifting.

  18. The nature and dynamics of world religions: a life-history approach.

    Baumard, Nicolas; Chevallier, Coralie


    In contrast with tribal and archaic religions, world religions are characterized by a unique emphasis on extended prosociality, restricted sociosexuality, delayed gratification and the belief that these specific behaviours are sanctioned by some kind of supernatural justice. Here, we draw on recent advances in life history theory to explain this pattern of seemingly unrelated features. Life history theory examines how organisms adaptively allocate resources in the face of trade-offs between different life-goals (e.g. growth versus reproduction, exploitation versus exploration). In particular, recent studies have shown that individuals, including humans, adjust their life strategy to the environment through phenotypic plasticity: in a harsh environment, organisms tend to adopt a 'fast' strategy, pursuing smaller but more certain benefits, while in more affluent environments, organisms tend to develop a 'slow' strategy, aiming for larger but less certain benefits. Reviewing a range of recent research, we show that world religions are associated with a form of 'slow' strategy. This framework explains both the promotion of 'slow' behaviours such as altruism, self-regulation and monogamy in modern world religions, and the condemnation of 'fast' behaviours such as selfishness, conspicuous sexuality and materialism. This ecological approach also explains the diffusion pattern of world religions: why they emerged late in human history (500-300 BCE), why they are currently in decline in the most affluent societies and why they persist in some places despite this overall decline. PMID:26511055

  19. Case Study in History of Education during the 1970s: Published Stories of the Midwest History of Education Society

    McKenzie, Mark


    The rapid expansion of public schooling during the 1950s and 1960s increased the need for teachers and teacher training. Colleges accomplished this by having professors of education train other educators in foundations of education. This broke the connections between academic history, philosophy, and sociology and educational history, philosophy,…

  20. The introduction history of invasive garden ants in Europe: integrating genetic, chemical and behavioural approaches

    Ugelvig, Line; Drijfhout, Falko; Kronauer, Daniel;


    BACKGROUND: The invasive garden ant, Lasius neglectus, is the most recently detected pest ant and the first known invasive ant able to become established and thrive in the temperate regions of Eurasia. In this study, we aim to reconstruct the invasion history of this ant in Europe analysing 14...... populations with three complementary approaches: genetic microsatellite analysis, chemical analysis of cuticular hydrocarbon profiles and behavioural observations of aggression behaviour. We evaluate the relative informative power of the three methodological approaches and estimate both the number of...... independent introduction events from a yet unknown native range somewhere in the Black Sea area, and the invasive potential of the existing introduced populations. RESULTS: Three clusters of genetically similar populations were detected, and all but one population had a similar chemical profile. Aggression...

  1. Social learning in Models and Cases - an Interdisciplinary Approach

    Buhl, Johannes; De Cian, Enrica; Carrara, Samuel; Monetti, Silvia; Berg, Holger


    Our paper follows an interdisciplinary understanding of social learning. We contribute to the literature on social learning in transition research by bridging case-oriented research and modelling-oriented transition research. We start by describing selected theories on social learning in innovation, diffusion and transition research. We present theoretical understandings of social learning in techno-economic and agent-based modelling. Then we elaborate on empirical research on social learning in transition case studies. We identify and synthetize key dimensions of social learning in transition case studies. In the following we bridge between more formal and generalising modelling approaches towards social learning processes and more descriptive, individualising case study approaches by interpreting the case study analysis into a visual guide on functional forms of social learning typically identified in the cases. We then try to exemplarily vary functional forms of social learning in integrated assessment models. We conclude by drawing the lessons learned from the interdisciplinary approach - methodologically and empirically.

  2. Approaches and Technologies for Systems Integration: A Case Study at the Federal University of Lavras

    GARCIA, C. M.


    Full Text Available This case study aims to analyze the integration's approaches and technologies among information systems and services in an academic environment. It has been done a study on the integration history in the Federal University of Lavras. The data had been gathered via questionnaires and documentation analysis. In this analysis, 4 distinct phases were specified. Besides, the advantages and disadvantages of each phase were discussed. The main contribution of this work is the analysis of different integration approaches among information systems and other services.


    Carvalho, S; S Machado; Hernandez, T.; Cleto, E.; M. Lima; Coimbra, E; Selores, M


    RESUMO Os autores descrevem o caso clínico de uma criança com mastocitose cutânea difusa com início aos 2 meses de idade. A importância deste caso deve-se quer ao risco de ocorrência de uma desgranulação mastocitária maciça quer ao risco de evolução para mastocitose sistémica. A propósito deste caso clínico, os autores fazem uma revisão sumária das mastocitoses. ABSTRACT The authors report a case of a child with diffuse cutaneous mastocytosis presenting sym...

  4. The Glauber approach in perturbative QCD: nucleon case

    We investigate the shadowing corrections for the nucleon gluon distribution predicted from Glauber (Mueller) approach in perturbative QCD. This work is a digest for the nucleon case of the extended work prior presented by the authors

  5. Improving the Earthquake Resilience of Buildings The worst case approach

    Takewaki, Izuru; Fujita, Kohei


    Engineers are always interested in the worst-case scenario. One of the most important and challenging missions of structural engineers may be to narrow the range of unexpected incidents in building structural design. Redundancy, robustness and resilience play an important role in such circumstances. Improving the Earthquake Resilience of Buildings: The worst case approach discusses the importance of worst-scenario approach for improved earthquake resilience of buildings and nuclear reactor facilities. Improving the Earthquake Resilience of Buildings: The worst case approach consists of two parts. The first part deals with the characterization and modeling of worst or critical ground motions on inelastic structures and the related worst-case scenario in the structural design of ordinary simple building structures. The second part of the book focuses on investigating the worst-case scenario for passively controlled and base-isolated buildings. This allows for detailed consideration of a range of topics includin...

  6. Worst-case Behaviour of History Based Pivot Rules on Acyclic Unique Sink Orientations of Hypercubes

    Aoshima, Yoshikazu; Deering, Theresa; Matsumoto, Yoshitake; Moriyama, Sonoko


    An acyclic USO on a hypercube is formed by directing its edges in such as way that the digraph is acyclic and each face of the hypercube has a unique sink and a unique source. A path to the global sink of an acyclic USO can be modeled as pivoting in a unit hypercube of the same dimension with an abstract objective function, and vice versa. In such a way, Zadeh's 'least entered rule' and other history based pivot rules can be applied to the problem of finding the global sink of an acyclic USO. In this paper we present some theoretical and empirical results on the worst case behaviour of various history based pivot rules for this problem. In particular, we investigate whether or not they can follow a Hamiltonian path on an acyclic USO.

  7. Performance of cancer cluster Q-statistics for case-control residential histories

    Sloan, Chantel D.; Jacquez, Geoffrey M.; Gallagher, Carolyn M.; Ward, Mary H.; Raaschou-Nielsen, Ole; Nordsborg, Rikke Baastrup; Meliker, Jaymie R.


    Few investigations of health event clustering have evaluated residential mobility, though causative exposures for chronic diseases such as cancer often occur long before diagnosis. Recently developed Q-statistics incorporate human mobility into disease cluster investigations by quantifying space- and time-dependent nearest neighbor relationships. Using residential histories from two cancer case-control studies, we created simulated clusters to examine Q-statistic performance. Results suggest the intersection of cases with significant clustering over their life course, Qi, with cases who are constituents of significant local clusters at given times, Qit, yielded the best performance, which improved with increasing cluster size. Upon comparison, a larger proportion of true positives were detected with Kulldorf’s spatial scan method if the time of clustering was provided. We recommend using Q-statistics to identify when and where clustering may have occurred, followed by the scan method to localize the candidate clusters. Future work should investigate the generalizability of these findings. PMID:23149326

  8. Case-based approaches for knowledge application and organisational learning

    Wang, Chengbo; Johansen, John; Luxhøj, James T.;


    practices and activity patterns are based on learning and applying the knowledge internal and external to an organisation. To ensure their smooth formulation process, there are two important techniques designed – an expert adaptation approach and an expert evaluation approach. These two approaches provide...... structured processes to execute the organisational learning and knowledge application, which intend to guide the practitioners during the process of manufacturing competence development and improvement. They are based on Case-Based Reasoning (CBR) methodology and rely on cases as the primary knowledge supply....... This paper aims to present the two approaches; introduce two types of tests on these approaches to verify their functionality: role-play testing and real world application testing; and summarises the applicability of the two approaches....

  9. Forms of Discourse and the Sciences of the Mind: Luria, Sacks, and the Role of Narrative in Neurological Case Histories.

    Journet, Debra


    Discusses two sets of neurological case histories: A. R. Luria's "The Man with a Shattered World," and Oliver Sack's "Awakenings." Argues that these histories display two paradigmatic explanations for the mind/brain relation, and that the movement from one paradigm to another also necessitates a movement to different forms of discourse. (MM)

  10. An Object-Based Approach for Fire History Reconstruction by Using Three Generations of Landsat Sensors

    Thomas Katagis


    Full Text Available In this study, the capability of geographic object-based image analysis (GEOBIA in the reconstruction of the recent fire history of a typical Mediterranean area was investigated. More specifically, a semi-automated GEOBIA procedure was developed and tested on archived and newly acquired Landsat Multispectral Scanner (MSS, Thematic Mapper (TM, and Operational Land Imager (OLI images in order to accurately map burned areas in the Mediterranean island of Thasos. The developed GEOBIA ruleset was built with the use of the TM image and then applied to the other two images. This process of transferring the ruleset did not require substantial adjustments or any replacement of the initially selected features used for the classification, thus, displaying reduced complexity in processing the images. As a result, burned area maps of very high accuracy (over 94% overall were produced. In addition to the standard error matrix, the employment of additional measures of agreement between the produced maps and the reference data revealed that “spatial misplacement” was the main source of classification error. It can be concluded that the proposed approach can be potentially used for reconstructing the recent (40-year fire history in the Mediterranean, based on extended time series of Landsat or similar data.

  11. Mature vs. Active Deep-Seated Landslides: A Comparison Through Two Case Histories in the Alps

    Delle Piane, Luca; Perello, Paolo; Baietto, Alessandro; Giorza, Alessandra; Musso, Alessia; Gabriele, Piercarlo; Baster, Ira


    Two case histories are presented, concerning the still poorly known alpine deep-seated gravitational slope deformations (DSD) located nearby Lanzada (central Italian Alps), and Sarre (north-western Italian Alps). The Lanzada DSD is a constantly monitored, juvenile, and active phenomenon, partly affecting an existing hydropower plant. Its well-developed landforms allow a precise field characterization of the instability-affected area. The Sarre DSD is a mature, strongly remodeled phenomenon, where the only hazard factor is represented by secondary instability processes at the base of the slope. In this case, the remodeling imposed the adoption of complementary analytical techniques to support the field work. The two presented studies had to be adapted to external factors, namely (a) available information, (b) geological and geomorphological setting, and (c) final scope of the work. The Lanzada case essentially relied upon accurate field work; the Sarre case was mostly based on digital image and DTM processing. In both cases a sound field structural analysis formed the necessary background to understand the mechanisms leading to instability. A back-analysis of the differences between the study methods adopted in the two cases is finally presented, leading to suggestions for further investigations and design.

  12. The introduction history of invasive garden ants in Europe: Integrating genetic, chemical and behavioural approaches

    Boomsma Jacobus J


    Full Text Available Abstract Background The invasive garden ant, Lasius neglectus, is the most recently detected pest ant and the first known invasive ant able to become established and thrive in the temperate regions of Eurasia. In this study, we aim to reconstruct the invasion history of this ant in Europe analysing 14 populations with three complementary approaches: genetic microsatellite analysis, chemical analysis of cuticular hydrocarbon profiles and behavioural observations of aggression behaviour. We evaluate the relative informative power of the three methodological approaches and estimate both the number of independent introduction events from a yet unknown native range somewhere in the Black Sea area, and the invasive potential of the existing introduced populations. Results Three clusters of genetically similar populations were detected, and all but one population had a similar chemical profile. Aggression between populations could be predicted from their genetic and chemical distance, and two major clusters of non-aggressive groups of populations were found. However, populations of L. neglectus did not separate into clear supercolonial associations, as is typical for other invasive ants. Conclusion The three methodological approaches gave consistent and complementary results. All joint evidence supports the inference that the 14 introduced populations of L. neglectus in Europe likely arose from only very few independent introductions from the native range, and that new infestations were typically started through introductions from other invasive populations. This indicates that existing introduced populations have a very high invasive potential when the ants are inadvertently spread by human transport.

  13. Individual perception and cultural development: Foucault's 1954 approach to mental illness and its history.

    Joranger, Line


    In his 1954 book Mental Illness and Personality Foucault combines the subjective experience of the mentally ill person with a sociocultural historical approach to mental illness and suggests that there exists a reciprocal connection between individual perception and sociocultural development. This article examines the ramifications of these connections in Foucault's 1954 works and the connection with his later historical works. The article also examines the similarities between Foucault's 1954 thoughts and contemporary intellectual thought, such as those outlined in Maurice Merleau-Ponty's existential phenomenology and in Gaston Bachelard and Georges Canguilhem's historical epistemology. In sum, my study shows that Foucault's historical analysis began long before his 1961 dissertation History of Madness. It also shows that, more than announcing the "death" of the subject, Foucault's historical analysis may have contributed to saving it. PMID:26844650


    João Estevam Lima de Almeida*


    Full Text Available This article appoachs the similarities between history and literature under its origins’ focus. The appearing of historygrafy, happened in Old Greece, up to the similarities and differences of Heródoto and Tucídides in account to the myth. This intersection point upon the edge is the main concern of our assay. Reviewing the discussion about the “tropos of speech” we propose one of the feasibles metodologics readings of a literary documentation – Euripides Tragedy “ João Estevam Lima de AlmeidaPsicanálise & Barroco em revista. v.4, n.2:, 82-119 dez. 2006. 119The Baccantes” – and its tribute to the work of the historian of ancient times, to finally approach some reflexions around the proficable discussion about two disciplines.

  15. Case histories portraying different methods of installing liners for verticle barriers

    Burke, G.K. [Hayward Baker Inc., Odenton, MD (United States); Crockford, R.M. [Keller Colcrete Ltd., Wetherby, West Yorkshire (United Kingdom); Achhorner, F.N. [Slurry Walls, Inc., Irving, TX (United States)


    The installation of liners for vertical barriers is difficult and has been a learning experience for every contractor making the attempt. Soil stratigraphy and hydrogeologic conditions can vary over short distances, creating a variety of problems. This is particularly so when working near landfills and documentation of the as-built condition is poor. Successful installation requires detailed planning and knowledge of what to expect, as well as alternate plans for potential problems. Several successful methods of panel connection will be presented as well as a variety of installation techniques. Project case histories will be reviewed, highlighting the challenges associated with specific construction techniques.

  16. A case history of the Marysville geothermal anomaly from a nuclear waste disposal perspective

    A case history of a mild geothermal area near Marysville, Montana has been compiled in order to learn about the effects that long-term heat generated by an irradiated fuel repository might have on the surrounding rock mass. The results of geological and geophysical surveys are summarized and the hydrogeological conditions in the granite mass, as measured in a 2 km deep borehole, are described. A model is proposed which accounts for the hydrothermal circulation and explains some of the geophysical observations. The implications to deep burial of nuclear wastes are discussed

  17. Primary renal carcinoid natural history of the disease for ten years: case report

    Ugras Murat; Yilmaz Ugur; Gunes Ali; Mizrak Bulent


    Abstract Background Primary renal carcinoid is extremely rare and there are few reports on the natural history of the disease. Case presentation A 68-year-old male with a right renal mass who lost to follow-up for ten years has been presented. His only complaint was a mild flank pain. Upon admission to the hospital for his renal mass, he underwent a right radical nephrectomy and pathological examination revealed the diagnosis of primary renal carcinoid. Conclusions In light of the presented c...

  18. A case history of polycrystalline diamond compact bit performance in the Tuscaloosa Trend

    Talbot, K.J.; Lynch, B.W.; Moore, S.O.


    This case history documents the performance of Polycrystalline Diamond Compact (PDC) bits relative to conventional roller cone and natural diamond bits in drilling a deep (14,500 ft - 18,000 ft) shalechalk sequence in 65 wells in the Tuscaloosa Trend of South Louisiana. PDC bits were used on rotary for drilling this sequence with varying degrees of success in conjunction with four different drilling programs. Included are discussions on variables which affected the performance of the PDC bits studied. Data presented originates from company bit records and photographs compiled during normal field operations.

  19. Case histories portraying different methods of installing liners for verticle barriers

    The installation of liners for vertical barriers is difficult and has been a learning experience for every contractor making the attempt. Soil stratigraphy and hydrogeologic conditions can vary over short distances, creating a variety of problems. This is particularly so when working near landfills and documentation of the as-built condition is poor. Successful installation requires detailed planning and knowledge of what to expect, as well as alternate plans for potential problems. Several successful methods of panel connection will be presented as well as a variety of installation techniques. Project case histories will be reviewed, highlighting the challenges associated with specific construction techniques

  20. CT cold areas in both putamens in cases with history of perinatal asphyxia

    CT bilaterally showed a cold area in the putamen of 5 infants with cerebral palsy who had had asphyxia at birth. The etiology was discussed, and 4 of the cases were clinically studied. All four patients had convulsive tetraplegia, or convulsive bilateral paralysis with the element of athetosis. Three of them had a history of infantile epilepsy, accompanied by abnormal ocular movement. Two patients with tetraplegia showed marked hypotonia of the trunk in ventral support (Landau). Impairment of the bilateral putamens in the abnormal muscle tone was inferred. (Chiba, N.)

  1. CT cold areas in both putamens in cases with history of perinatal asphyxia

    Ishizaki, Asayo; Maruyama, Hiroshi (Tokyo Women' s Medical Coll. (Japan))


    CT bilaterally showed a cold area in the putamen of 5 infants with cerebral palsy who had had asphyxia at birth. The etiology was discussed, and 4 of the cases were clinically studied. All four patients had convulsive tetraplegia, or convulsive bilateral paralysis with the element of athetosis. Three of them had a history of infantile epilepsy, accompanied by abnormal ocular movement. Two patients with tetraplegia showed marked hypotonia of the trunk in ventral support (Landau). Impairment of the bilateral putamens in the abnormal muscle tone was inferred.

  2. A discrete time event-history approach to informative drop-out in mixed latent Markov models with covariates.

    Bartolucci, Francesco; Farcomeni, Alessio


    Mixed latent Markov (MLM) models represent an important tool of analysis of longitudinal data when response variables are affected by time-fixed and time-varying unobserved heterogeneity, in which the latter is accounted for by a hidden Markov chain. In order to avoid bias when using a model of this type in the presence of informative drop-out, we propose an event-history (EH) extension of the latent Markov approach that may be used with multivariate longitudinal data, in which one or more outcomes of a different nature are observed at each time occasion. The EH component of the resulting model is referred to the interval-censored drop-out, and bias in MLM modeling is avoided by correlated random effects, included in the different model components, which follow common latent distributions. In order to perform maximum likelihood estimation of the proposed model by the expectation-maximization algorithm, we extend the usual forward-backward recursions of Baum and Welch. The algorithm has the same complexity as the one adopted in cases of non-informative drop-out. We illustrate the proposed approach through simulations and an application based on data coming from a medical study about primary biliary cirrhosis in which there are two outcomes of interest, one continuous and the other binary. PMID:25227970

  3. [Experience of two cases of tetanus without a clear history of trauma].

    Ihara, Fumie; Otsuka, Yuichiro


    Tetanus develops following inoculation of damaged human tissue with Clostridium tetani which transforms into a vegetative rod-shaped bacterium and produces the tetanospasmin. Usually we make a diagnosis of tetanus based on typical symptoms and history of trauma. But, when patients have no noticeable history of trauma, we have to diagnose tetanus on the basis of the clinical course and symptoms. We report herein on two cases of tetanus without a clear history of trauma. The first patient visited us with the chief complaints of pain in the neck and shoulder, and difficulty in opening the mouth. Based on these symptoms, we diagnosed tetani in the first stage and we started treatment, consisting mainly of human anti-tetanus immunoglobulin on the first day. The second patient also had typical symptoms of tetanus. However, he rejected the use of human anti-tetanus immunoglobulin on the first day. Because his symptoms worsened on the 2nd day, we insisted that he used it. On the 5th hospital day he developed partial opisthotonus of neck. However he recovered without tracheotomy or intratracheal intubation. PMID:24601099

  4. Necrotizing sialometaplasia of the palatal mucosa in patient with history of anorexia: review and case report.

    Gilowski, Łukasz; Wiench, Rafał; Polakiewicz-Gilowska, Anna; Dwornicka, Katarzyna


    Necrotizing sialometaplasia is a self-limiting disorder affecting minor salivary glands resembling a malignant process both clinically and histopathologically. The etiology of this rare inflammatory` disorder is related to an ischemic event. Identified risk factors include alcohol abuse, smoking, drugs, denture wearing, injury and systemic diseases. Also reported are cases of necrotizing sialometaplasia associated with bulimia. This paper identifies the whole body incitement among additional risk factors by presenting a case of necrotizing sialometaplasia in an 18 year old patient with the history of anorexia nervosa. Furthermore it describes the effects of extreme cooling of palatal mucosa with ice chips resulting in constriction of blood vessels as the direct cause, reinforcing ischemic etiology of necrotizing sialometaplasia. PMID:24667056

  5. Case history studies of energy conservation improvements in the meat industry


    Presented are case histories for ten energy-efficient technologies implemented by the meat industry. For each case is presented: the name and location of the plant, name of plant employee contact with address and telephone number, energy consumption and costs at the plant before and after implementation of energy-conserving technology, description of the investment decision process, and changes in production or product quality as a result of the new equipment. The measures presented are: continuous rendering, high-pressure return on the boiler, heat recovery from condensate return and flash steam, continuous whole blood processing, preheating of process water with recovered refrigeration waste heat, continuous rendering of poultry scraps, electrical stimulation of beef, preheating and storing process water with recovered refrigeration waste heat, microcomputer control system, and housekeeping improvements. (LEW)

  6. Oil spill case histories, US and international, 1967-1991 (for microcomputers). Data file

    By providing insights into past experiences, the database of oil spill case histories will benefit those involved in spill response and contingency planning. These case histories, developed by National Oceanic and Atmospheric Administration with significant funding and consultation by the U.S. Coast Guard Research and Development Center, are intended as planning aids for scientific and operational decision-making at spills, and to ensure that particular strategic elements are properly addressed in contingency planning. They can be used for constructing scenarios and for 'gaming' a spill. The information was collected from interviews with representatives of U.S. and international oil spill response agencies. The information covers significant spills in U.S. and international waters from 1967-1991 in which more than 100,000 barrels were spilled internationally or 10,000 barrels spilled in U.S. waters, dispersants or bioremediation agents were used, and involved severe environmental impacts. The disk includes a HyperCard stack of approximately 100 files. Each file represents one spill and is searchable using keywords and other descriptors, using standard HyperCard search functions. The disk also includes a keywork dictionary and an introduction describing the project

  7. An alternative approach to reconstructing organic matter accumulation with contrasting watershed disturbance histories from lake sediments

    A number of proxies, including carbon to nitrogen ratio (C:N) and stable isotopes (δ13C and δ15N), have been used to reconstruct organic matter (OM) profiles from lake sediments and these proxies individually or in combination cannot clearly discriminate different sources. Here we present an alternative approach to elucidate this problem from lake sediments as a function of watershed scale land use changes. Stable isotope signatures of defined OM sources from the study watersheds, Shawnigan Lake (SHL) and Elk Lake (ELL), were compared with sedimentary proxy records. Results from this study reveal that terrestrial inputs and catchment soil coinciding with the watershed disturbances histories probably contributed in recent trophic enrichment in SHL. In contrast, cultural eutrophication in ELL was partially a result of input from catchment soil (agricultural activities) with significant input from lake primary production as well. Results were consistent in both IsoSource (IsoSource version 1.2 is a Visual Basic program used for source separation, ( ( and discriminant analysis (statistical classification technique). - The study shows an alternative approach to reconstruct organic matter accumulation using stable isotopes from lake sediments

  8. Evolutionary and demographic history of the Californian scrub white oak species complex: an integrative approach.

    Ortego, Joaquín; Noguerales, Víctor; Gugger, Paul F; Sork, Victoria L


    Understanding the factors promoting species formation is a major task in evolutionary research. Here, we employ an integrative approach to study the evolutionary history of the Californian scrub white oak species complex (genus Quercus). To infer the relative importance of geographical isolation and ecological divergence in driving the speciation process, we (i) analysed inter- and intraspecific patterns of genetic differentiation and employed an approximate Bayesian computation (ABC) framework to evaluate different plausible scenarios of species divergence. In a second step, we (ii) linked the inferred divergence pathways with current and past species distribution models (SDMs) and (iii) tested for niche differentiation and phylogenetic niche conservatism across taxa. ABC analyses showed that the most plausible scenario is the one considering the divergence of two main lineages followed by a more recent pulse of speciation. Genotypic data in conjunction with SDMs and niche differentiation analyses support that different factors (geography vs. environment) and modes of speciation (parapatry, allopatry and maybe sympatry) have played a role in the divergence process within this complex. We found no significant relationship between genetic differentiation and niche overlap, which probably reflects niche lability and/or that multiple factors, have contributed to speciation. Our study shows that different mechanisms can drive divergence even among closely related taxa representing early stages of species formation and exemplifies the importance of adopting integrative approaches to get a better understanding of the speciation process. PMID:26547661

  9. Life history of the Small Sandeel, Ammodytes tobianus, inferred from otolith microchemistry. A methodological approach

    Laugier, F.; Feunteun, E.; Pecheyran, C.; Carpentier, A.


    Knowledge of life history and connectivity between essential ecological habitats are relevant for conservation and management of species and some natural tracers could be used to study the lifecycles of small or short-lived marine fishes. Although sandeels are central in marine food webs and are key species, there is incomplete knowledge about population mixing and migration patterns. For the first time the use of the otolith microchemistry on sandeel species is evaluated in the case of the Small Sandeel. Variations in microchemical fingerprints of 13 trace elements are performed with a Femtosecond LA-ICPM from the core to the margin of sagittal otolith and are compared within and between otoliths extracted from 34 fishes sampled in three different sites along the coast of the south-western English Channel in France. Firstly, preliminary investigations on the validity of the method revealed that Mg/Ca was the only ratio significantly dependant on fish ontogeny and sampling season. Secondly, the Mn/Ca, Zn/Ca, and Cu/Ca ratios enabled us to significantly discriminate among sampling sites. Thirdly, microchemical fingerprints of each life stage varied significantly among sampling sites but not within them, suggesting high site fidelity over relatively short distances. Finally, the fingerprints of all life stages were significantly different from those of the larval and metamorphosis stages. The otolith microchemistry could detect change of signature relative to the shift from a pelagic behaviour to a resident bentho-pelagic behaviour during the middle of the juvenile stage in Small Sandeels. Hence, analysis of trace element fingerprints in otoliths appears to be a valuable method to further studies on ontogenic habitat change, population mixing and variation of life history and be helpful for the management at local or regional scales of short-lived species such as those belonging to other Ammodytidae.

  10. Art history at the art school: Revisiting the institutional origins of the discipline based on the case of nineteenth-century Greece

    Eleonora Vratskidou


    Full Text Available As part of a broader research on the teaching of art history in nineteenth-century art academies, this paper focuses on the courses offered at the Athenian School of Arts from 1844 to 1863 by the historian and philologist Grigorios Pappadopoulos. In his teaching, Papadopoulos turned away from the tradition of a universal history for artists established in Italian and French art schools, and proposed instead an in-depth study of ancient Greek art, drawing on the German university model, and more particularly on Karl Otfried Müller’s Handbuch der Arhchaölogie der Kunst (1830. The paper examines the various operations that permitted the re-invention of an archaeological manual for the purposes of art education, and analyses the different approaches to the study of ancient art developed within the School of Arts and the Athenian University during the period. I argue that adapting the scholarly study of art to the needs of artistic training gave way to approaches primarily centred on objects, techniques and forms, rather than on the construction of historical narratives. The Greek case is used in order to reflect more broadly on the scholarly courses of art academies, which remain largely overlooked both within the history of art education and the history of art history. Lying at the intersection of these two fields, scholarly training at the art school, and art history courses in particular, may permit both a re-evaluation of art education in the nineteenth century and a better understanding of the varied institutional frameworks that shaped art history as a discipline.

  11. Surgical History and the Risk of Endometriosis: A Hospital-Based Case-Control Study.

    Liu, Xishi; Long, Qiqi; Guo, Sun-Wei


    Women tend to receive more surgical procedures than men. Our mouse study shows that surgical stress promotes the development of endometriosis. This study was undertaken to test the hypothesis that surgery increases the risk of endometriosis. We recruited 208 patients with ovarian endometrioma and 212 age-matched patients with ovarian teratoma and retrieved information on the history of any surgical procedures after menarche, grouped by laparotomy, laparoscopy, gynecologically related procedures, cesarean section, and surgeries performed on torso and extremities was recorded. We then evaluated the association, if any, between endometriosis and history of surgical procedures. Cases and controls were comparable with respect to age, marital status, education level, and occupation. Eleven (5.3%) cases had laparotomy before the index surgery while 4 (1.9%) controls did. Sixty-six (31.7%) cases had Cesarean section while 53 (25.0%) controls did. Multivariate analysis identified age, at the index surgery laparotomy, and cesarean section as 3 factors positively associated with the risk of endometriosis while parity was found to be negatively associated with the risk. Laparotomy was associated with increased risk of endometriosis (odds ratio [OR] = 3.64, 95% confidence interval [CI] = 1.08-12.31), while cesarean section was associated with 2-fold increase in risk (OR = 2.16, 95% CI = 1.31-3.55). Both laparotomy and cesarean section may increase the risk of endometriosis probably by activation of adrenergic signaling, thus facilitating angiogenesis and accelerating the growth of endometriotic lesions that are already in existence. This finding may have important ramifications for the perioperative management of patients with increased risk or recurrence risk of endometriosis. PMID:26919976

  12. Security-Informed Safety Case Approach to Analysing MILS Systems

    Netkachova, K.; Müller, K.; Paulitsch, M; Bloomfield, R. E.


    Safety cases are the development foundation for safety-critical systems and are often quite complex to understand depending on the size of the system and operational conditions. The recent advent of security aspects complicates the issues further. This paper describes an approach to analysing safety and security in a structured way and creating security-informed safety cases that provide justification of safety taking into particular consideration the impact of security. The paper includes an...

  13. Evolution of Terrorist Network using Clustered approach: A Case study

    Nizamani, Sarwat; Memon, Nasrullah

    In the paper we present a cluster based approach for terrorist network evolution. We have applied hierarchical agglomerative clustering approach to 9/11 case study. We show that, how individual actors who are initially isolated from each other are converted in small clusters and result in a fully...... evolved network. This method of network evolution can help intelligence security analysts to understand the structure of the network....

  14. Nonfunctioning parathyromatosis after endoscopic thyroid lobectomy via an axillo-breast approach: A case report

    Park, Jong Chun; Jeong, Young Ju [School of Medicine, Catholic University of Daegu, Daegu (Korea, Republic of)


    Parathyromatosis is characterized by multiple lesions of benign hyperfunctioning parathyroid tissue in the neck or mediastinum. Parathyromatosis is caused by proliferation of embryonic remnant or seeding of parathyroid tissue after parathyroidectomy. Parathyromatosis is rare but is the common cause of recurrent hyperparathyroidism. We describe a unique case of non-functional parathyromatosis in a 16-year-old girl with a history of right thyroid lobectomy via an axillo-breast approach for a nonfunctioning parathyroid adenoma in the right side of the neck.

  15. How to Teach History When History Is Contested? : A case study of Chile - Analyzing Education Policy and Pracitce


    “Never again”. The demand for no repetition was the main theoretical framework of the Universal Declaration of Human Rights, in the aftermaths of the Second World War. But how can the next generations learn of what happened, when they have not experienced the atrocities, and when those who have, either choose not to talk about it or there are severe disagreements of how to explain it? Chile´s recent history, with the dictatorship only twenty three years behind, is an example of a society that...

  16. Teaching Recent History in Countries that Have Experienced Human Rights Violations: Case Studies from Chile

    Toledo, Maria Isabel; Magendzo, Abraham; Gazmuri, Renato


    Incorporating recent history into the educational curricula of countries that have experienced human rights violations combines the complexities of teaching history, teaching recent history, and human rights education. Recent history makes a historical analysis of social reality and a historiographical analysis of the immediate. It is located…

  17. The inextricable axis of targeted diagnostic imaging and therapy: An immunological natural history approach.

    Cope, Frederick O; Abbruzzese, Bonnie; Sanders, James; Metz, Wendy; Sturms, Kristyn; Ralph, David; Blue, Michael; Zhang, Jane; Bracci, Paige; Bshara, Wiam; Behr, Spencer; Maurer, Toby; Williams, Kenneth; Walker, Joshua; Beverly, Allison; Blay, Brooke; Damughatla, Anirudh; Larsen, Mark; Mountain, Courtney; Neylon, Erin; Parcel, Kaeli; Raghuraman, Kapil; Ricks, Kevin; Rose, Lucas; Sivakumar, Akhilesh; Streck, Nicholas; Wang, Bryan; Wasco, Christopher; Williams, Amifred; McGrath, Michael


    approaches. Beyond the elements of imaging applications of these agents is their evolution to therapeutic agents as well, and even in the neo-logical realm of theranostics. Characteristics of agents such as tilmanocept that exploit the natural history of diseases with remarkably high specificity are the expectations for the future of patient- and disease-centered diagnosis and therapy. PMID:26924502

  18. Case studies approach for an undergraduate astrobiology course

    Burko, Lior M.; Enger, Sandra


    Case studies is a well known and widely used method in law schools, medical schools, and business schools, but relatively little used in physics or astronomy courses. We developed an astrobiology course based strongly on the case studies approach, and after teaching it first at the University of Alabama in Huntsville, we have adapted it and are now teaching it at Alabama A&M University, a HBCU. The case studies approach uses several well tested and successful teaching methods - including group work, peer instruction, current interest topics, just-in-time teaching, &c. We have found that certain styles of cases are more popular among students than other styles, and will revise our cases to reflect such student preferences. We chose astrobiology -- an inherently multidisciplinary field -- because of the popularity of the subject matter, its frequent appearance in the popular media (news stories about searches for life in the universe, the discovery of Earth-like exoplanets, etc, in addition to SciFi movies and novels), and the rapid current progress in the field. In this talk we review briefly the case studies method, the styles of cases used in our astrobiology course, and student response to the course as found in our assessment analysis.

  19. The Three Domains of Conservation Genetics: Case Histories from Hawaiian Waters.

    Bowen, Brian W


    The scientific field of conservation biology is dominated by 3 specialties: phylogenetics, ecology, and evolution. Under this triad, phylogenetics is oriented towards the past history of biodiversity, conserving the divergent branches in the tree of life. The ecological component is rooted in the present, maintaining the contemporary life support systems for biodiversity. Evolutionary conservation (as defined here) is concerned with preserving the raw materials for generating future biodiversity. All 3 domains can be documented with genetic case histories in the waters of the Hawaiian Archipelago, an isolated chain of volcanic islands with 2 types of biodiversity: colonists, and new species that arose from colonists. This review demonstrates that 1) phylogenetic studies have identified previously unknown branches in the tree of life that are endemic to Hawaiian waters; 2) population genetic surveys define isolated marine ecosystems as management units, and 3) phylogeographic analyses illustrate the pathways of colonization that can enhance future biodiversity. Conventional molecular markers have advanced all 3 domains in conservation biology over the last 3 decades, and recent advances in genomics are especially valuable for understanding the foundations of future evolutionary diversity. PMID:27001936

  20. Component fatigue rates drawn from measured load histories - Case study of a PWR surge line using FAMOS

    To guard against material fatigue, many German power plant utilities monitor fatigue-relevant plant items. In those instances where this is performed continuously and where data are stored permanently in digital form so as to be accessible to subsequent automatic computer processing, additional useful information on material fatigue is available. This is demonstrated by a case study of a PWR surge line. The study has been performed using the Siemens fatigue monitoring system FAMOS. Its three functional units comply with the three step strategy of data acquisition, data evaluation and fatigue calculation. The third unit is a new PC software tool completed recently and employed within the case study presented here. The measured load histories are used as input data. Fatigue rates are evaluated at pronounced locations of the plant items in question. FAMOS data acquisition has been in use at the Philippsburg 2 nuclear power plant since 1988. FAMOS fatigue calculation software now provides an elegant, rational approach to fatigue analysis. It stores the cumulative fatigue level for all of the positions monitored and can therefore continue fatigue analysis with the measured data that are collected

  1. Sealable joint steel sheet piling for groundwater control and remediation: Case histories

    Smyth, D. [Univ. of Waterloo (Canada); Jowett, R. [Waterloo Barrier Inc., Rockwood, Ontario (Canada); Gamble, M. [C3 Environmental, Breslau, Ontario (Canada)


    The Waterloo Barrier{trademark} steel sheet piling (patents pending) incorporates a cavity at each interlocking joint that is flushed clean and injected with sealant after the piles have been driven into the ground to form a vertical cutoff wall. The installation and sealing procedures allow for a high degree of quality assurance and control. Bulk wall hydraulic conductivities of 10{sup -8} to 10{sup -10} cm/sec have been demonstrated at field installations. Recent case histories are presented in which Waterloo Barrier{trademark} cutoff walls are used to prevent off-site migration of contaminated groundwater or soil gases to adjacent property and waterways. Full enclosures to isolate DNAPL source zones or portions of contaminated aquifers for pilot-scale remediation testing will also be described. Monitoring data will be used to demonstrate the effectiveness of the Waterloo Barrier{trademark} in these applications.

  2. Case Histories in Late Byzantium: Reading the Patient in John Zacharias Aktouarios' On Urines.

    Bouras-Vallianatos, Petros


    This paper provides the first analysis of case histories in the Byzantine period as they feature in the On Urines of John Zacharias Aktouarios (ca. 1275-ca. 1330). This group of clinical accounts is of special importance in that they have no counterpart in the Greek-speaking world since Galen. This study aims to illustrate various factors determining the patient's response to the physician's advice through close examination of John's clinical narratives. The first part deals with the terminology that John uses to indicate the patient's gender, age, social status, and clinical condition. The second part explores the significance of John's acquaintance with the patients, the patient's socio-economic background, and also the patient's experience in connection with the physician's professional expertise. PMID:26946687

  3. Natural history of chondroid skull base lesions - case report and review

    Long-term follow-up reports on chondroid lesions of the skull base are rarely presented in the literature. There are virtually no data on natural growth rates of these tumors based on MRI obtained over a period of 10 years or longer. We followed a patient who has had such a lesion for more than 12 years. A non-progressive, slight abducens palsy has been the only associated symptom so far. Even though the patient was operated on for an additional intracranial arterio-venous malformation, clinical features and chromosomal testing excluded Maffucci's syndrome. The MRI follow-up in this case provides an extraordinary perspective on the natural history of chondroid skull base tumors. (orig.)

  4. Griscelli syndrome: A case report of Reye′s syndrome and atopic dermatitis history

    Kirzioglu Z


    Full Text Available Griscelli syndrome (GS is a rare autosomal recessive disorder that results in pigmentary dilution of the skin and the hair (silver hair, with the presence of large clumps of pigment in hair shafts, and an accumulation of melanosomes in melanocytes. Sixty cases of GS have been reported in the literature, but we could find no description of its oro-dental symptoms. Reye′s syndrome (RS is characterized by acute noninflammatory encephalopathy and renal and hepatic failure, while atopic dermatitis (AD is a skin disorder with an immunologic basis. The aim of this paper is to describe the oro-dental and physical findings in a girl who had been diagnosed with GS at 3.5 years of age; she also had AD as well as a history of RS at infancy. We discuss the possible relationship between the three syndromes.

  5. An approach to LCSA: the case of concrete recycling

    Hu, Mingming; Kleijn, René; Bozhilova-Kisheva, Kossara Petrova;


    approach is illustrated with an on-going case study on concrete recycling. Methods In the context of an EC-FP7 project on technology innovation for concrete recycling, five operational steps to implement the LCSA framework are proposed: (1) broad system definition, (2) making scenarios, (3) defining...

  6. Chylothorax--a conservative approach (a case report.

    Oak S


    Full Text Available Lymphatic blockage due to a non-specific inflammation probably of a filarial origin caused dilatation and ectasia of lymph channels at thoracic inlet of a child. Transudation of lymph through these channels led to chylothorax. The present case report highlights the significance of conservative approach towards this complex problem.

  7. Cross-border collaboration in history among Nordic students: A case study about creating innovative ICT didactic models

    Maria Spante; Asgjerd Vea Karlsen; Anne-Mette Nortvig; Rene B. Christiansen


    Gränsöverskridande Nordisk Undervisning/Utdanelse (GNU, meaning Cross-Border Nordic Education), the larger Nordic project, under which this case study was carried out, aims at developing innovative, cross-border teaching models in different subject domains in elementary school, including mathematics, language, science, social studies and history. This paper provides an in-depth description and analysis of how four social science and history elementary school teachers and their ...

  8. Art, Science and History in a Globalized World: the Case of Italy-China

    Salvatore Lorusso


    Full Text Available Art and science, over the centuries, though starting from different positions, have very often led to the same conclusions. History, on the other hand, establishes identities that derive from our past and allows for exchanges and unity between people of different nationalities, in both a commercial and scientific context, in a world without borders, in spite of obvious contradictions related to this globalized world. The case of Italy-China bears witness to this in a significant way.A case in point is represented by the scientific collaboration between the Alma Mater University of Bologna and Zhejiang University, as well as that between the Salesian Pontifical University of Rome and Fudan University in Shanghai, Zhejiang University and the Foreign Studies University of Beijing.In the first case, the ongoing research project “Historical anamnesis, preservation and valorization of the statues of the Longxing Buddhist Temple of Qingzhou (China” is being carried out between the Department of Cultural Heritage Diagnostic Laboratory for Cultural Heritage of the University of Bologna and the Cultural Heritage Institute of Zhejiang University. In the second case, collaboration between the Salesian Pontifical University and the Chinese Universities, covers activities relating to the study of philosophy, pedagogy and Latin language and literature.The paper highlights the importance of drawing value of a cultural, conservative, social, identitary nature within the context of the holistic value of cultural heritage and respecting ethical aspects at a personal and interpersonal level, in particular, by offering young people the opportunity to enter the employment market and of which they are currently experiencing all the problematic fluctuations.

  9. Natural history of asymptomatic non-thrombosed fusiform aneurysm of vertebral artery. A study of 10 cases

    The natural history of incidentally found non-thrombosed fusiform aneurysms of the vertebral artery has not yet been determined. We retrospectively analyzed 10 asymptomatic cases confirmed by head MRI and cerebral angiography. All were males aged from 42 to 73 years old (mean±standard deviation (SD) 56.3±9.90). Three cases were found in a brain doc, another 3 were incidentally found in the workup of other neurological disease, and 4 were found in screening for chronically sustained headache. The patients' vascular risk included hypertension, hyperlipidemia and smoking. The aneurysms were found more often on the right (8 out of 10). The aneurysmal wall contained major cortical arteries in all cases except 1 who received endovascular trapping. The endoview mode obtained from 3D-digital subtraction angiography (DSA) revealed smooth arterial surface seen from the inside. The treatment option was vascular risk control in most cases, with the exception of 2 endovascular procedures according to the patients' will. Compared with the symptomatic cases, the characteristics of the asymptomatic cases resembled those of cases with cerebral infarction such as age, sex and natural history. It may be that the asymptomatic cases represent the chronic phase of unnoticed dissection of the vertebral artery. The endosurface view obtained from 3D-DSA might reflect the change they had taken. Although based on only a limited number of cases, this study indicates the possibility of a benign natural history of asymptomatic non-thrombosed fusiform aneurysm of the vertebral artery. (author)

  10. A nested case-control approach to interactions between radiation dose and other factors as causes of cancer

    Often a nested case-control study is the most practicable approach to estimating the interaction of two cancer risk factors in a large cohort. If one of the factors has already been evaluated for the entire cohort, however, more information is already available about its relationship to risk than could be obtained from a nested study. A modified case-control approach is proposed, in which information about the second, unknown factor is sought for cases and controls matched on the first factor. The approach requires, for interaction models other than the multiplicative, a nonstandard analytical approach incorporating cohort-based information about the first factor. The problem is discussed in the context of breast cancer risk in a defined cohort of female Japanese atomic bomb survivors, in relation to radiation dose and reproductive history. (author)

  11. František Faustin Procházka's Approach to the History of Learning

    Žůrek, Jiří


    Roč. 138, 3/4 (2015), s. 325-339. ISSN 0024-4457 R&D Projects: GA ČR(CZ) GAP406/12/2254 Institutional support: RVO:67985955 Keywords : Enlightenment * intellectual history * historia litteraria * classical Latin * classical education * František Faustin Procházka Subject RIV: AB - History

  12. A GIS Approach to Urban History: Rome in the 18th Century

    Keti Lelo


    Full Text Available This article explores the integration of GIS technology with urban historical studies, focusing on one case study from the 18th century, the project Historical atlas of the modern Rome. The methodology employed in this project allows for effectiveness and accuracy in historical data acquisition and integration, which enables refined analyses of socioeconomic and environmental phenomena. The approach outlined in this article allowed researchers from different disciplines—city historians, archaeologists, demographists, economists, and so on—to interpret urban phenomenologies according to different thematic keys. These interpretations were derived from archival sources that complement each other and offer diversified insights into the urban context. The techniques described in the article are based on methods of data acquisition and spatial analysis developed in a GIS environment by exploiting the effectiveness of this technology in the quantitative treatment of cartographic and documentary sources.

  13. Case Studies Approach in Tourism Destination Branding Research

    Adeyinka-Ojo S.F.


    Full Text Available A review of literature indicates that there are different types of qualitative research methods such as action research, content analysis, ethnography, grounded theory, historical analysis, phenomenology and case study. However, which approach is to be used depends on several factors such as the nature and objectives of the research. The aim of this paper is to focus on the research methodology aspects of applying case study as a research approach and its relevance in tourism destination branding research specifically on a single case study (SCS context. There are arguments that the SCS is a weak research strategy. Some of the potentials or shortcomings highlighted in the literature include the primitive nature of SCS, flexibility of sample technique, data collection method and data analysis. Others include lack of rigour, reliability, validity, credibility of findings and generalisation. This paper has adopted content analysis of the literature on tourism destination branding. Findings indicate that the quality of SCS can be verified using specific case study tactics for four design tests such as validity (construct, internal and external; and reliability using the case study protocol. Theoretical implication suggests that SCS is an empirical enquiry use to understand complex phenomena and favoured by practitioners.

  14. An Alternative Surgical Approach to Pseudoainhum: A Case Report.

    Pirozzi, Kelly M; Piraino, Jason


    Pseudoainhum is a disorder of unknown etiology that is usually congenital and nonprogressive. One theory states it is caused by amnion band constriction in utero. These constriction bands lead, not only to a less cosmetically appealing foot, but also to long-term neurovascular compromise, resulting in amputation of the digit. The described surgical approaches have been limited within published data. The 2 procedures that have been described are either a Z-plasty or amputation, depending on the degree of the deformity. The present case report provides an alternative surgical approach to a pseudoainhum deformity of a third digit. PMID:26961414

  15. Therapeutic Approach of Wrist Ganglion Using Electroacupuncture: Two Case Reports

    Kim, Kyoung Min; Kang, Eun Young; Lee, Sung Hoon; Jung, A Young; Nam, Doo Hyoun; Cheon, Ji Hwan


    A ganglion cyst is a relatively common benign tumor on the wrist. Conservative and surgical approaches have been used for its treatment. Various conservative treatment methods have been suggested such as reassurance, aspiration, sclerosant injection, and direct compression. But, there is no acceptable treatment of choice yet because each suggested method has a relatively high recurrence rate. We want to report two cases in which the size of the wrist ganglion was decreased by using electroacu...

  16. Evaluating the Patient With Diarrhea: A Case-Based Approach

    Sweetser, Seth


    The evaluation of the patient with diarrhea can be complex and the treatment challenging. In this article, the definition of diarrhea and the pathophysiologic mechanisms that lead to diarrhea are reviewed. A simplified 5-step approach to the patient with diarrhea is provided and applied in a case-oriented manner applicable to everyday clinical practice. On completion of this article, you should be able to (1) define diarrhea, (2) outline various pathophysiologic mechanisms of diarrhea, and (3...

  17. On the Consistency of the Consistent Histories Approach to Quantum Mechanics

    Okon, Elias


    The Consistent Histories (CH) formalism aims at a quantum mechanical framework for the universe as a whole. CH stresses the importance of histories for quantum mechanics, as opposed to measurements, and maintains that a satisfactory formulation of quantum mechanics allows one to assign probabilities to alternative histories of the universe. It further proposes that each realm, that is, each set of histories to which probabilities can be assigned, provides a valid quantum-mechanical account, but that different realms can be mutually incompatible. Finally, some of its proponents offer an "evolutionary" explanation of our existence in the universe and of our preference for quasiclassical descriptions of nature. The present work questions the validity of claims offered by CH proponents asserting that it solves many interpretational problems in quantum mechanics. In particular, we point out that the interpretation of the framework leaves vague two crucial points, namely, whether realms are fixed or chosen and the ...

  18. Data analysis in oral history: A new approach in historical research

    Firouzkouhi, Mohammadreza; Zargham-Boroujeni, Ali


    Background: Historical research has limitations in applying proper and credit-worthy chronology to clarify the data. In this methodology, the application of oral history is one of the ways in which answers to questions addressed by the research theme are elicited. Oral history, as a clear and transparent tool, needs to be applied with guidelines for qualitative researchers regarding data analysis limitations from oral evidence and face-to-face contact. Therefore, the development of a systemat...

  19. Taking a History of Childhood Trauma in Psychotherapy : Achieving an Optimal Approach



    The authors examine the process of taking an initial history of childhood abuse and trauma in psychodynamic psychotherapy. In exploring the advantages, complexities, and potential complications of this practice, they hope to heighten the sensitivities of clinicians taking trauma histories. Emphasis on the need to be active in eliciting important historical material is balanced with discussion of concepts that can help therapists avoid interpersonal dynamics that reenac...

  20. A multicentre case control study on complicated coeliac disease: two different patterns of natural history, two different prognoses.

    Biagi, F; Marchese. A; F. Ferretti; Ciccocioppo, R; Schiepatti, A; Volta, U; Caio, G; Ciacci, C.; Zingone, F.; D'Odorico, A; Carroccio, A; Ambrosiano, G; P. Mansueto; Gasbarrini, A; Piscaglia, AC


    Background Coeliac disease is a common enteropathy characterized by an increased mortality mainly due to its complications. The natural history of complicated coeliac disease is characterised by two different types of course: patients with a new diagnosis of coeliac disease that do not improve despite a strict gluten-free diet (type A cases) and previously diagnosed coeliac patients that initially improved on a gluten-free diet but then relapsed despite a strict diet (type B cases). Our aim w...

  1. Dental Treatment Considerations for Children with Complex Medical Histories: A Case of Townes-Brock Syndrome.

    Elkaiali, Lujayn; Ratliff, Katelin; Oueis, Hassan


    It is common for oral health and dental care to be considered a lesser priority for children with complex medical histories than other aspects of their health care. Often, these patients are at a high risk for caries and infection due to poor oral health practices at home, special or restricted diets, and no early establishment of a dental home for routine dental care. Unfortunately, many of these patients present to their first dental visits with caries and require aggressive treatment, such as extractions instead of pulp therapy, or crowns instead of fillings, due to their high caries risk and the difficulty in safely managing them medically during treatment. A unique example of this occurred at the Children's Hospital of Michigan, where a patient with Townes-Brock syndrome (TBS) presented to the dental clinic with advanced caries. TBS is a rare autosomal dominant disorder characterized by major findings such as anomalies of the external ear, imperforate anus, renal malformations, and malformations of the hand. Like many medically complex cases, dental anomalies are not a direct consequence of TBS; however, due to the necessity of high calorie and high sugar feeding supplementation, many of these patients are at high risk for advanced dental caries. Due to this high caries risk, a more aggressive treatment plan is necessary to minimize the risk of recurrent decay and infection. It is critical to stress that even if the disease, syndrome, etc., of a patient does not have inherent dental consequences, it is imperative for regular dental care to be part of the comprehensive treatment plan for these patients. This includes the establishment of a dental home at a young age and proper oral health education of the patient's caregivers and their physicians. In the case of the patient with TBS, recommendations for daily brushing, especially after high sugar feedings was stressed, as well as the reduction of any other sweets within the diet. PMID:26882646

  2. Water conservation by 3 R's - case histories of Heavy Water Plants

    The basics of water conservation revolve around three R's of Reduce, Recycle, and Reuse. The Heavy Water Plants are an excellent example of water savings, and these case studies will be of interest to the chemical industry. The issues involved with water conservation and re-use in different Heavy Water Plants are of different nature. In H2S-H2O process plants the water consumption has been substantially decreased as compared to the design water needs. To quote the figures HWP (Kota) was designed to consume 2280 m3/hr water, which included 453 m3/hr water as feed for deuterium extraction. Today the plant operates with only 1250 m3/hr water while processing 500 m3/hr feed; and is headed to decrease the total water consumption to 700 m3/hr. Similarly at HWP (Manuguru) the design had provided 5600 m3/hr water consumption, which is today operating with only 1750 m3/hr and poised to operate with 1600 m3/hr. The issues of water conservation in Ammonia Hydrogen exchange plants have an additional dimension since water losses mean direct loss of heavy water production. In adjoining ammonia plants deuterium shifts to steam in the reformer and shift converter, and this excess steam is condensed as rich condensate. It becomes incumbent on the fertilizer plant to maintain a tight discipline for conserving and re-using the rich condensate so that deuterium concentration in the synthesis gas is maintained. Efforts are also underway to utilize rich condensate of GSFC in the newly developed technology of water ammonia exchange at HWP (Baroda) and we are targeting 20% production gains by implementation of this scheme and with no increase in the pollution load. These case histories will be of interest to Chemical Process Industry. (author)

  3. Case history of natural analogue research on sandstone type uranium occurrences, Japan

    Previous fundamental studies on the ore genesis of uranium occurrences chiefly in Cenozoic sandstone formations in Japan, have been re-examined as the case history on natural analogue of radionuclides in high-level radioactive wastes (HLRW). Two principal mode of occurrences have been distinguished among Cenozoic uranium localities in Japan. In the Setouchi (Inland Sea) subregion, hot-spots are found in lacustrine to shallow sea facies of calm environment, corresponding to the first stage of formation of tectonic basins. As observed in Ningyo-toge and Tono area, stratabound ore bodies are generally arranged into paleo-channels. Another type of sporadic uranium indications are found within collapse basins in the 'Green-tuff' subregion, where intense volcanisms and block movements had been taken places throughout Middle miocene age. Well-developed fractures were to be favorable paths for uraniferous groundwater, as well as the suitable site for deposition of uranium. In both cases, the source material of uranium is granitic basement. Under oxidizing environment, uranium anomalies have been occasionally detected in surface- or fracture waters which passing through decomposed granite. In contrast to the behavior of uranium, one of the adequate analogues for mobile nuclides, thorium and REE are relatively immobile even under the same geologic and geochemical circumstances. In ore horizon, where reducing condition has still been kept, geochronological age of tetravalent uranium mineral is in concordance with the age of the host rock. Analysis of structural control shows that the principal factors for uranium concentration are the layout of redox front related to paleo-water tables. 234U/238U disequilibrium method has been proved to be the powerful tool for detecting mobility of uranium in the host rock throughout diagenesis and weathering process. The result of field and laboratory works on this is reported as an example. (author)

  4. In-situ bioremediation of gasoline in soil and groundwater: A case history

    This paper presents a case history of the in-situ biotreatment of gasoline in soil and groundwater at a leaking UST site in Greenville, North Carolina. The dissolved contaminant plume covers an area of about 18,000 sq. ft. and to a depth below the land surface (BLS) of about 15 ft. The total volume of the plume (1 pore volume) is estimated at about 40,000 cu. ft. or 300,000 gals. The initial concentration of gasoline in the plume averaged about 40 mg/l of total BTEX with some free phase product present. The in-situ bioremediation system consists of two 4-in. diameter ground water recovery wells, a treatment system and an infiltration gallery for treated effluent recycle to the subsurface. The above ground treatment system consists of transfer pumps, pressure filters, granulated activated carbon filters, air spargers, holding tanks, chemical feed system, propane fired hot water heater and monitoring instruments. The system was operated at a constant recirculation rate of about 25 gpm. The bioenhancement process includes water heating, nutrient demands in the form of monoammonium phosphate and trisodium phosphate and oxygen additions in the form of dilute hydrogen peroxide

  5. Digital Tools Disrupting Tertiary Students’ Notions of Disciplinary Knowledge: Cases in History and Tourism

    Bronwen Cowie


    Full Text Available This paper reports on the findings from a two year research project that explored the potential of digital tools in support of teaching–learning across different disciplinary areas at a New Zealand university. Two courses (in History and Tourism are case studied using data collected through interviews with lecturers, tutors and their students, and an online student survey. Findings from the research revealed that both lecturers and students were challenged in learning about the affordances and use of the lecturer selected digital tools as a mediational means. The tools were not initially transparent to them, nor were they able to be easily deployed to undertake their primary task—teaching for the lecturers, and, learning and demonstrating learning for the students completing assigned tasks. The process of learning and using the tools disrupted participants’ prior thinking and led to new understandings of both disciplines and of effective pedagogies for the two disciplines. The findings increase our understanding of the ways digital tools can develop, challenge and expand tertiary students learning and have implications for practice.

  6. Increasing lazy gas well production : a field wide case history in northern Alberta

    Wylde, J.J. [Clariant Oil Services, Montreal, PQ (Canada)


    Gas well fluid loading is a common problem in mature natural gas fields. While many methods exist to overcome the accumulation of liquid in a gas well, there is no common method to all wells. Most techniques strive to increase the velocity of gas production to lift water and reduce loading, or to reduce the critical velocity. Mechanical methods include plunger lift, rods, electrical submersible pumps (ESP) and swabbing operations. This study focused on chemical addition to unload liquids from gas wells. It is amongst the first to report chemical deliquification in the Canadian oil patch. This paper described some of the unique challenges associated with this, and provided details on the chemistry of finished foamer products and manufacturing processes. A case history from a single property in northern Alberta was presented to demonstrate the field wide application of this technology. The paper also summarized the design criteria for a selection of remediation chemistries and methodologies used to counter the production decline occurring as a result of water production. Chemical deliquification involves cleaning the wells with a combination batch asphaltene solvent, followed by a very pervasive foam forming chemical to unload the high solids content and scale deposition. Chemical deliquification was shown to add significant value by increasing production by 33 per cent with an insignificant associated chemical cost. The results are application to enhanced recovery in the shale gas and coalbed methane (CBM) fields being produced across North America. 30 refs., 7 figs.

  7. Cross-Border Collaboration in History among Nordic Students: A Case Study about Creating Innovative ICT Didactic Models

    Spante, Maria; Karlsen, Asgjerd Vea; Nortvig, Anne-Mette; Christiansen, Rene B.


    Gränsöverskridande Nordisk Undervisning/Utdanelse (GNU, meaning Cross-Border Nordic Education), the larger Nordic project, under which this case study was carried out, aims at developing innovative, cross-border teaching models in different subject domains in elementary school, including mathematics, language, science, social studies and history.…

  8. A review on polyamide thin film nanocomposite (TFN) membranes: History, applications, challenges and approaches.

    Lau, W J; Gray, Stephen; Matsuura, T; Emadzadeh, D; Chen, J Paul; Ismail, A F


    This review focuses on the development of polyamide (PA) thin film nanocomposite (TFN) membranes for various aqueous media-based separation processes such as nanofiltration, reverse osmosis and forward osmosis since the concept of TFN was introduced in year 2007. Although the total number of published TFN articles falls far short of the articles of the well-known thin film composite (TFC) membranes, its growth rate is significant, particularly since 2012. Generally, by incorporating an appropriate amount of nanofiller into a thin selective PA layer of a composite membrane, one could produce TFN membranes with enhanced separation characteristics as compared to the conventional TFC membrane. For certain cases, the resulting TFN membranes demonstrate not only excellent antifouling resistance and/or greater antibacterial effect, but also possibly overcome the trade-off effect between water permeability and solute selectivity. Furthermore, this review attempts to give the readers insights into the difficulties of incorporating inorganic nanomaterials into the organic PA layer whose thickness usually falls in a range of several-hundred nanometers. It is also intended to show new possible approaches to overcome these challenges in TFN membrane fabrication. PMID:26011136

  9. Equivalence between the real-time Feynman histories and the quantum-shutter approaches for the 'passage time' in tunneling

    We show the equivalence of the functions Gp(t) and vertical bar Ψ(d,t) vertical bar2 for the 'passage time' in tunneling. The former, obtained within the framework of the real-time Feynman histories approach to the tunneling time problem, uses the Gell-Mann and Hartle's decoherence functional, and the latter involves an exact analytical solution to the time-dependent Schroedinger equation for cutoff initial waves

  10. Considerations for Software Defined Networking (SDN): Approaches and use cases

    Bakshi, K.

    Software Defined Networking (SDN) is an evolutionary approach to network design and functionality based on the ability to programmatically modify the behavior of network devices. SDN uses user-customizable and configurable software that's independent of hardware to enable networked systems to expand data flow control. SDN is in large part about understanding and managing a network as a unified abstraction. It will make networks more flexible, dynamic, and cost-efficient, while greatly simplifying operational complexity. And this advanced solution provides several benefits including network and service customizability, configurability, improved operations, and increased performance. There are several approaches to SDN and its practical implementation. Among them, two have risen to prominence with differences in pedigree and implementation. This paper's main focus will be to define, review, and evaluate salient approaches and use cases of the OpenFlow and Virtual Network Overlay approaches to SDN. OpenFlow is a communication protocol that gives access to the forwarding plane of a network's switches and routers. The Virtual Network Overlay relies on a completely virtualized network infrastructure and services to abstract the underlying physical network, which allows the overlay to be mobile to other physical networks. This is an important requirement for cloud computing, where applications and associated network services are migrated to cloud service providers and remote data centers on the fly as resource demands dictate. The paper will discuss how and where SDN can be applied and implemented, including research and academia, virtual multitenant data center, and cloud computing applications. Specific attention will be given to the cloud computing use case, where automated provisioning and programmable overlay for scalable multi-tenancy is leveraged via the SDN approach.

  11. Seismic response in archaeological areas: the case-histories of Rome

    Donati, Stefano; Funiciello, Renato; Rovelli, Antonio


    Rome is affected by earthquakes associated to three different seismogenic districts: the Central Apennines area, the Colli Albani volcanic area and the Roman area. The major effects were exclusively due to Apennine seismicity and reached in some cases felt intensities up to VII-VIII degree (MCS scale). The predominant role in the damage distribution seems to be played by the local geological conditions. The historical centre of the city is characterized by the presence of two geomorphologic domains: the alluvial plain of Tiber river and the topographic relieves of Roman Hills, where tradition indicates the first site of the city foundation. In particular, the right river side is characterized by the outcropping of the regional bedrock along the Monte Mario-Gianicolo ridge, while the eastern relieves are the remnants of the Sabatini and Albani volcanic plateau, deeply eroded by the Tiber river and its tributaries during the last glacial low-stand (Würm). These domains are characterized by a large difference in seismic response, due to the high impedance contrast between Holocene coarse deposits filling the Tiber Valley and sedimentary and volcanic Plio-Pleistocene units. Seismic damage observed in 150 monuments of downtown Rome was indicating a significant concentration on alluvial recent deposits. This result was confirmed by the geographical distribution of conservation and retrofitting activities subsequent to main earthquakes, mostly related to local geological conditions. The cases of Marcus Aurelius' Column and Colosseum confirmed the influence of the Holocene alluvial network in local seismic response. During 2500 years of history, the monuments of Rome have `memorized' the seismic effects of historical earthquakes. In some cases, the integration of historical and geological research and macroseismic observations may provide original and useful indications to seismologists to define the seismic response of the city. Local site effects represent a serious

  12. Teaching the Role of Religion in American History: A Case Study.

    Karlinger, Mary Jessica


    Recounts how participation in various summer teacher workshops gave the author access to materials for use in teaching about the religious influences in U.S. history. Relates that the National Archives'"Primarily Teaching" workshop revealed primary source documents representing every period in U.S. history. Provides ways these historical documents…

  13. Approaches to Children's Exposure Assessment: Case Study with Diethylhexylphthalate (DEHP).

    Ginsberg, Gary; Ginsberg, Justine; Foos, Brenda


    Children's exposure assessment is a key input into epidemiology studies, risk assessment and source apportionment. The goals of this article are to describe a methodology for children's exposure assessment that can be used for these purposes and to apply the methodology to source apportionment for the case study chemical, diethylhexylphthalate (DEHP). A key feature is the comparison of total (aggregate) exposure calculated via a pathways approach to that derived from a biomonitoring approach. The 4-step methodology and its results for DEHP are: (1) Prioritization of life stages and exposure pathways, with pregnancy, breast-fed infants, and toddlers the focus of the case study and pathways selected that are relevant to these groups; (2) Estimation of pathway-specific exposures by life stage wherein diet was found to be the largest contributor for pregnant women, breast milk and mouthing behavior for the nursing infant and diet, house dust, and mouthing for toddlers; (3) Comparison of aggregate exposure by pathways vs biomonitoring-based approaches wherein good concordance was found for toddlers and pregnant women providing confidence in the exposure assessment; (4) Source apportionment in which DEHP presence in foods, children's products, consumer products and the built environment are discussed with respect to early life mouthing, house dust and dietary exposure. A potential fifth step of the method involves the calculation of exposure doses for risk assessment which is described but outside the scope for the current case study. In summary, the methodology has been used to synthesize the available information to identify key sources of early life exposure to DEHP. PMID:27376320

  14. Native American History in a Box: A New Approach to Teaching Native American Cultures

    Helms, Emory C.; Hitt, Austin M.; Schipper, Jason A.; Jones, Adam M.


    This article describes the Native American History in a Box curriculum which is designed to introduce elementary and middle-level students to Native American cultures. The curriculum consists of a five day unit addressing the following concepts pertaining to Native American Nations: settlements, tools, sustenance, pottery, and contact with…

  15. The Lower Manhattan Project: A New Approach to Computer-Assisted Learning in History Classrooms.

    Crozier, William; Gaffield, Chad


    The Lower Manhattan Project, a computer-assisted undergraduate course in U.S. history, enhances student appreciation of the historical process through research and writing. Focuses on the late nineteenth and early twentieth centuries emphasizing massive immigration, rapid industrialization, and the growth of cities. Includes a reading list and…

  16. Teaching Science Rhetorically: An Interdisciplinary Approach to Natural History, 1948-1985.

    DePaolo, Charles


    Considers the different analogies used by James Rettie, Teilhard de Chardin, Robert Ardrey, Jacob Bronowski, Richard Leakey, Steven Weinberg, Heinz Pagels, and Carl Sagan to make concepts related to time and natural history accessible to the layperson. Suggests that these analogies be used at the undergraduate level in both humanities and science…

  17. Pediatric consent: case study analysis using a principles approach.

    Azotam, Adaorah N U


    This article will explore pediatric consent through the analysis of a clinical case study using the principles of biomedical ethics approach. Application of the principles of autonomy, nonmaleficence, beneficence, and justice will be dissected in order to attempt to establish resolution of the ethical dilemma. The main conflict in this case study deals with whether the wishes of an adolescent for end-of-life care should be followed or should the desire of his parents outweigh this request. In terminal cancer, the hope of early palliative care and dignity in dying serve as priorities in therapy. Application of the moral principles to both sides of the dilemma aided in providing an objective resolution to uphold pediatric consent. PMID:22753459

  18. Angina in a diabetic patient: a case of integrated approach

    Eugenio Roberto Cosentino


    Full Text Available Diabetes mellitus, both of type 1 and 2, is an important risk factor for the development of atherosclerosis: in diabetic patients vascular atherosclerotic complications are responsible of approximately 80% of all the deaths. There is no doubt that patients affections originating from diabetes and coronaropathy remain at high risk. For this reason it is essential to adopt an aggressive strategy of secondary prevention. We report a case of a patient with multiple risk factors for cardiovascular diseases: the successful management was due to an integrated approach that involved the general practitioner and cardiologist.

  19. Essential software testing a use-case approach

    Fournier, Greg


    A Practical Guide to Software TestingMuch has been written about the difficulty of software testing. Often these laments are accompanied by cautionary words about how careful one has to be to ensure testing is done properly. However, there is a dearth of resources that give practical guidance on the nuts and bolts of testing. Essential Software Testing: A Use-Case Approach describes testing methods and techniques in a common sense manner that is easy to understand, helping readers to quickly and effectively implement project-specific testing solutions.Divided into three parts, the book first d

  20. Relation between occupational asthma case history, bronchial methacholine challenge, and specific challenge test in patients with suspected occupational asthma.

    Baur, X; Huber, H; Degens, P O; Allmers, H; Ammon, J


    Inhalative methacholine challenge (MC) was performed in 229 subjects presumed to suffer from occupational asthma due to exposure to airborne latex allergens (n = 62), flour (n = 28), isocyanates (n = 114), or irritants in hairdressers' salons (n = 25). They were also subjected to specific challenges with the occupational agents they were exposed to, completed a questionnaire using an abbreviated version of the ATS-DLD, and were interviewed by an experienced physician. Bronchial hyperresponsiveness in MC was defined by the results obtained in a previous study with 81 healthy volunteers. The threshold in these controls was set at a cumulative MC dose of 0.3 mg, corresponding to a sensitivity of 95%. The main purpose of the study was to investigate whether the MC and/or the occupational asthma case history are reliable predictors of the specific challenge test outcomes. In 40-72% of examined subjects, workplace-related asthma complaints occurred, with bronchial hyperreactivity in the MC ranging from 48% to 61%. However, only 12-25% demonstrated a significant bronchoconstructive reaction in the specific challenge test. MC results are only moderately associated with workplace-related asthma case histories. Positive outcomes of challenges with occupational agents are well correlated with positive MC results plus occupational asthma case histories. The combination of MC and occupational asthma case history shows a relatively high specificity (62%, 86%, 80%), but the sensitivity was moderately low (83%, 71%, 52%). MC sensitivities were 92%, 71%, and 62% (case histories of hairdressers were not available). We conclude that in most cases, occupational asthma (as defined by a specific challenge test response) is combined with bronchial hyperresponsiveness and workplace-related asthmatic symptoms. However, subjects of each exposure group demonstrated bronchial hyperresponsiveness and complained of workplace-related asthmatic symptoms, but occupational asthma could not be

  1. Investigation of Nonlinear Site Response and Seismic Compression from Case History Analysis and Laboratory Testing

    Yee, Eric

    In this thesis I address a series of issues related to ground failure and ground motions during earthquakes. A major component is the evaluation of cyclic volumetric strain behavior of unsaturated soils, more commonly known as seismic compression, from advanced laboratory testing. Another major component is the application of nonlinear and equivalent linear ground response analyses to large-strain problems involving highly nonlinear dynamic soil behavior. These two components are merged in the analysis of a truly unique and crucial field case history of nonlinear site response and seismic compression. My first topic concerns dynamic soil testing for relatively small strain dynamic soil properties such as threshold strains, gammatv. Such testing is often conducted using specialized devices such as dual-specimen simple-shear, as devices configured for large strain testing produce noisy signals in the small strain range. Working with a simple shear device originally developed for large-strain testing, I extend its low-strain capabilities by characterizing noisy signals and utilizing several statistical methods to extract meaningful responses in the small strain range. I utilize linear regression of a transformed variable to estimate the cyclic shear strain from a noisy signal and the confidence interval on its amplitude. I utilize Kernel regression with the Nadaraya-Watson estimator and a Gaussian kernel to evaluate vertical strain response. A practical utilization of these techniques is illustrated by evaluating threshold shear strains for volume change with a procedure that takes into account uncertainties in the measured shear and vertical strains. My second topic concerns the seismic compression characteristics of non-plastic and low-plasticity silty sands with varying fines content (10 ≤ FC ≤ 60%). Simple shear testing was performed on various sand-fines mixtures at a range of modified Proctor relative compaction levels ( RC) and degrees-of-saturation (S

  2. A case history study on causation of the landslide in Santa Clara, California, USA

    Yun Liao; Sadek M. Derrega; Craig A. Hall


    This paper presents a case history study on the geologic investigation and numerical modeling of a reactivated landslide in the County of Santa Clara, California to identify the failure mechanism. The landslide occurred on an approximately 18.3-m high, north-facing slope during March 2011. The land-slide measured about 33.5 m in width and about 51.8 m in length. Along the toe of the slope, a residential structure with a swimming pool was built on a cut and fill pad and there are several other structures present along the western side of the pad. The landslide occurred immediately to the south of the residential building and moved northward between the County Road A and the house’s side yard. The movement of the landslide resulted in damaging the west-bound traffic lane of County Road A and encroached onto the paved driveway for the residential property. An investigation was performed to identify the failure mechanism of the landslide to conclude whether Road A re-alignment by the County or prominent cutting performed along the lower portion of the slope by the homeowner during 2000 through 2004 contributed to the reactivation of the old landslide deposit. The investigation included site reconnaissance, reviewing available published geologic information, reviewing site-specific geologic and geotechnical data developed by other consultants, and performing numerical modeling. The outcomes of the investigation indicate that the primary causation for the reactivation and failure of the subject pre-existing landslide is the prominent cutting performed along the lower portion of the slope during 2000 through 2004 and water tank cut bench. The Road A re-alignment did not contribute to the reactivation of the old landslide deposit.

  3. Case histories of microbiologically influenced corrosion of austenitic stainless steel weldments

    Microbiologically influenced corrosion (MIC) is initiated or accelerated by microorganisms and is currently recognized as a serious problem affecting the construction and operation of many industrial facilities, including nuclear power plants. The purpose of this paper is to review how biofouling and MIC can occur and discuss current mechanistic theories. A case history of MIC attack in power plants is examined with emphasis on the role of welding and heat treatment variables using laboratory electrochemical analyses. Although MIC can occur on a variety of alloys, pitting corrosion failures of austenitic stainless steels are often associated with weldments. MIC occurs as the result of a consortium of microorganisms colonizing on the metal surface and their variety (fungi, bacteria, algae, mold, and slimes) enables them to form support systems for cross feeding to enhance survival. The metabolic processes influence corrosion behaviour of materials by destroying protective coatings, producing a localized acid environment, creating corrosive deposits, or altering anodic and cathodic reactions. On stainless steels, biofilms destroy the passive oxide film on the surface of the steels and subject them to localized forms of corrosion. Many of the MIC failures in industry result in pitting to austenitic stainless steel weldments. Pitting primarily occurs in the weld metal, heat affected zones, and adjacent to the weld in the base metal. Depending on the conditions of the concentration cell created by the biofilm, either phase of the two-phase duplex stainless steel, austenite or delta ferrite, may be selectively attacked. Theories have been proposed about the mechanism of MIC on austenitic stainless steel and and a general understanding is that some function associated with the biofilm formation directly affects the electrochemical process

  4. The Momotombo Geothermal Field, Nicaragua: Exploration and development case history study



    This case history discusses the exploration methods used at the Momotombo Geothermal Field in western Nicaragua, and evaluates their contributions to the development of the geothermal field models. Subsequent reservoir engineering has not been synthesized or evaluated. A geothermal exploration program was started in Nicaragua in 1966 to discover and delineate potential geothermal reservoirs in western Nicaragua. Exploration began at the Momotombo field in 1970 using geological, geochemical, and geophysical methods. A regional study of thermal manifestations was undertaken and the area on the southern flank of Volcan Momotombo was chosen for more detailed investigation. Subsequent exploration by various consultants produced a number of geotechnical reports on the geology, geophysics, and geochemistry of the field as well as describing production well drilling. Geological investigations at Momotombo included photogeology, field mapping, binocular microscope examination of cuttings, and drillhole correlations. Among the geophysical techniques used to investigate the field sub-structure were: Schlumberger and electromagnetic soundings, dipole mapping and audio-magnetotelluric surveys, gravity and magnetic measurements, frequency domain soundings, self-potential surveys, and subsurface temperature determinations. The geochemical program analyzed the thermal fluids of the surface and in the wells. This report presents the description and results of exploration methods used during the investigative stages of the Momotombo Geothermal Field. A conceptual model of the geothermal field was drawn from the information available at each exploration phase. The exploration methods have been evaluated with respect to their contributions to the understanding of the field and their utilization in planning further development. Our principal finding is that data developed at each stage were not sufficiently integrated to guide further work at the field, causing inefficient use of

  5. [Laparocele: a review of the literature and analysis of case histories].

    Lasagna, B; Resegotti, A; Garino, M; Balbo, G


    We analyze a group of 64 laparoceles from which it emerges a per cent distribution in the different regions and a correlation between the dimensions of the lesion and the relative regions in agreement with the data usually given in the literature. Furthermore we point out a clear dependence on pathogenetic factors of general and local order. Is therefore recognized the necessity of preventing their insurgence and reducing the risk of relapses through appropriate laparotomy incisions, with adoption of a suitable surgical technique and the correction of systemic diseases. The voluminous laparoceles are responsible of cardiac, respiratory, coagulative diseases, that must be scrupulously judged for an appropriate therapeutical approach. The surgical treatment, as well as for the cases of bigger dimensions, has mostly availed itself of an elementary technique (simple approach, apposition "en paletot" splitting of the fasciae). In the necessity of strengthening weak parietal tissues or of replacing vast losses of matter, we have limitedly resorted to autologous grafts, while good results have been observed with the lyophilized dura mater. PMID:2100109

  6. A secured e-tendering modeling using misuse case approach

    Mohd, Haslina; Robie, Muhammad Afdhal Muhammad; Baharom, Fauziah; Darus, Norida Muhd; Saip, Mohamed Ali; Yasin, Azman


    Major risk factors relating to electronic transactions may lead to destructive impacts on trust and transparency in the process of tendering. Currently, electronic tendering (e-tendering) systems still remain uncertain in issues relating to legal and security compliance and most importantly it has an unclear security framework. Particularly, the available systems are lacking in addressing integrity, confidentiality, authentication, and non-repudiation in e-tendering requirements. Thus, one of the challenges in developing an e-tendering system is to ensure the system requirements include the function for secured and trusted environment. Therefore, this paper aims to model a secured e-tendering system using misuse case approach. The modeling process begins with identifying the e-tendering process, which is based on the Australian Standard Code of Tendering (AS 4120-1994). It is followed by identifying security threats and their countermeasure. Then, the e-tendering was modelled using misuse case approach. The model can contribute to e-tendering developers and also to other researchers or experts in the e-tendering domain.

  7. Inferring population history with DIYABC: a user-friendly approach to Approximate Bayesian Computation

    Cornuet, Jean-Marie; Santos, Filipe; Beaumont, Mark A; Robert, Christian P.; Marin, Jean-Michel; Balding, David J.; Guillemaud, Thomas; Estoup, Arnaud


    Summary: Genetic data obtained on population samples convey information about their evolutionary history. Inference methods can extract part of this information but they require sophisticated statistical techniques that have been made available to the biologist community (through computer programs) only for simple and standard situations typically involving a small number of samples. We propose here a computer program (DIY ABC) for inference based on approximate Bayesian computation (ABC), in...

  8. Approximate Bayesian Computation: a useful approach for inferring population history and other parameters

    Konečný, A.; Bryja, Josef

    Brno: Ústav biologie obratlovců AV ČR, 2012 - (Bryja, J.; Albrechtová, J.; Tkadlec, E.). s. 97 ISBN 978-80-87189-11-5. [Zoologické dny. 09.02.2012-10.02.2012, Olomouc] R&D Projects: GA ČR GAP506/10/0983 Institutional research plan: CEZ:AV0Z60930519 Keywords : colonization history * black rat Subject RIV: EG - Zoology

  9. The Co-evolution of Intergenerational Transfers and Longevity: An Optimal Life History Approach1

    Cyrus Chu, C. Y.; Lee, Ronald D.


    How would resources be allocated among fertility, survival, and growth in an optimal life history? The budget constraint assumed by past treatments limits the energy used by each individual at each instant to what it produces at that instant. We consider under what conditions energy transfers from adults, which relax the rigid constraint by permitting energetic dependency and faster growth for the offspring, would be advantageous. In a sense, such transfers permit borrowing and lending across...

  10. Autoimmune Pancreatitis and Treatment Approaches with Case Reports

    Şafak Öztürk


    Full Text Available Objective: In this study, we aimed to review retrospectively the data of 10 patient who were treated and followed-up in our clinic and to review the current approaches in the diagnosis and treatment of autoimmune pancreatitis (AIP.Material and Methods: We reviewed 10 patients retrospectively who were operated on and had the diagnosis of AIP histopathologically in the Ege University School of Medicine Department of General Surgery.Results: Between June 2001-November 2010, 10 patients who were diagnosed as AIP were examined retrospectively. Radiologically, a pancreatic mass was found in the pancreatic head with ultrasound in 7 (70% of 10 patients and suspicious lesions were identified in the head of the pancreas in 3 (30% patients. All patients were operated on in our clinic with the preliminary diagnosis of pancreatic head tumor; 8 patients underwent Whipple’s procedure, 1 patient underwent pylorus preserving pancreaticoduodenectomy, and in 1 patient an exploratory pancreatic biopsy (frozen section was carried out.Conclusion: Autoimmune pancreatitis is a disease with increasing incidence and characterized by lymphoplasmocytic cell infiltration and fibrosis. Patients with a pancreatic mass, if there is an autoimmune disease or chronic pancreatitis suspected in the detailed history, it is necessary to evaluate patients in terms of AIP serologically to protect the patients from an incoorectng diagnosis and morbidity of surgery.

  11. Comprehensive Case Analysis on Participatory Approaches, from Nexus Perspectives

    Masuhara, N.; Baba, K.


    According to Messages from the Bonn2011 Conference, involving local communities fully and effectively in the planning and implementation processes related to water, energy and food nexus for local ownership and commitment should be strongly needed. The participatory approaches such as deliberative polling, "joint fact-finding" and so on have been applied so far to resolve various environmental disputes, however the drivers and barriers in such processes have not been necessarily enough analyzed in a comprehensive manner, especially in Japan. Our research aims to explore solutions for conflicts in the context of water-energy-food nexus in local communities. To achieve it, we clarify drivers and barriers of each approaches applied so far in water, energy and food policy, focusing on how to deal with scientific facts. We generate hypotheses primarily that multi-issue solutions through policy integration will be more effective for conflicts in the context of water-energy-food nexus than single issue solutions for each policy. One of the key factors to formulate effective solutions is to integrate "scientific fact (expert knowledge)" and "local knowledge". Given this primary hypothesis, more specifically, we assume that it is effective for building consensus to provide opportunities to resolve the disagreement of "framing" that stakeholders can offer experts the points for providing scientific facts and that experts can get common understanding of scientific facts in the early stage of the process. To verify the hypotheses, we develop a database of the cases which such participatory approaches have been applied so far to resolve various environmental disputes based on literature survey of journal articles and public documents of Japanese cases. At present, our database is constructing. But it's estimated that conditions of framing and providing scientific information are important driving factors for problem solving and consensus building. And it's important to refine

  12. On the analysis of Waterman's approach in the electrostatic case

    Farafonov, Victor; Il`in, Vladimir; Ustimov, Vladimir; Prokopjeva, Marina


    We reconsider (namely, conclusively improve, discuss in more detail, supply with more numerical tests, at last compare with the studies of other authors) and extend our earlier works on applicability of Waterman's approach. In the electrostatic case which is more simple but still principally similar to the light scattering one, we discuss the condition of existence of solution to the infinite system given by this approach and of convergence of solutions to the truncated systems with a growing number of equations. The condition found earlier and depending on the particle shape only (namely, all singularities of the analytic continuation of internal field must be more distant than all singularities of the analytic continuation of "scattered" field) must include the following correction for spheroids: the approach is applicable to any particles of this shape. We discuss how this condition can be related to other light scattering methods, in particular the generalized point matching one. As illustrations we present some results of special calculations made with high accuracy for inverse spheroids. Besides showing a general agreement of the theoretical applicability condition with numerical results and the works of other authors, we note several still unclear aspects of the problem.

  13. The Special Place Project: Efficacy of a Place-Based Case Study Approach for Teaching Geoscience

    Moosavi, Sadredin


    Achieving geoscience literacy of the general population has become increasingly important world wide as ever more connected and growing societies depend more and more on our planet's limited natural resource base. Building citizen understanding of their dependence on the local environment, and the geologic processes which created and continue to change it, has become a great challenge to educators at all levels of the education system. The Special Place Project described in this presentation explores use of a place-based case study approach combining instruction in geoscience content with development of observation, reasoning, writing and presentation skills. The approach allows students to select the locations for their individual case studies affording development of personal connections between the learner and his environment. The approach gives instructors at many grade levels the ability to develop core pedagogical content and skills while exploring the unique geologic environments relevant to the local population including such critical issues as land use, resource depletion, energy, climate change and the future of communities in a changing world. The geologic reasons for the location of communities and key events in their histories can be incorporated into the students' case studies as appropriate. The project is unique in placing all course instruction in the context of the quest to explore and gain understanding of the student's chosen location by using the inherently more generalized course content required by the curriculum. By modeling how scientists approach their research questions, this pedagogical technique not only integrates knowledge and skills from across the curriculum, it captures the excitement of scientific thinking on real world questions directly relevant to students' lives, increasing student engagement and depth of learning as demonstrated in the case study reports crafted by the students and exam results. Student learning of topics

  14. One plant, three regulators. A case history of the impact of regulatory review on EPRTM design

    AREVA's EPRTM1- reactor has been the subject of thorough reviews by nuclear regulators in several countries. This paper describes how the EPRTM design was subject to regulatory reviews in France, Finland, and the United States during both pre-application interactions and during the licensing or certification reviews of specific plants. Early interaction with French and German nuclear regulators began in 1989, continued through the 1993 'Common safety approach for future PWRs,' and the 2000 'Technical Guidelines for the Design and Construction of the New Generation of PWRs'. The regulatory interactions of the 1990's thus affected key features of the EPRTM plant as it has been offered in Finland, France, and the United States, among other countries. Since 2000, each of the three countries has exercised a process for early interaction between the regulator and the designer of a new plant. After early interaction, formal regulatory reviews proceeded with specific reviews for units at Olkiluoto and Flamanville as well as part of U.S. Design Certification. In some cases, the EPRTM design has been updated to comply with specific local requirements which were not requested by the French and German regulators. Since those early interactions, formal permissions to construct have been granted in France and Finland. Looking back, it will be apparent that the regulatory process of new-plant design review has caused both advancement and, to at least some degree, divergence. Standardization is of key importance for safe and economic development of nuclear power plants worldwide, benefiting all stakeholders. AREVA is determined to foster this approach. (author)

  15. B reactor recirculation pump shaft crack: A case history Grand Gulf Nuclear Station Unit number-sign 1

    This case history documents the vibration response of the B Reactor Recirculation Pump at Grand Gulf Unit number-sign 1, during the first eleven days of May 1989, while a crack was propagating through the pump shaft in the general area of the hydrostatic bearing. The data presented in this paper was originally acquired by Grand Gulf personnel with an instrument grade tape recorder. The recorded data was later provided to Bently Nevada Corporation for analysis

  16. Approaches to the Low Grade Metamorphic History of the Karakaya Complex by Chlorite Mineralogy and Geochemistry

    Sema Tetiker; Hüseyin Yalçın; Ömer Bozkaya


    In this study, chlorite is used to investigate the diagenetic-metamorphic evolution and accurate geological history of the different units belonging to the Karakaya complex, Turkey. Primary and secondary chlorite minerals in the very low-grade metamorphic rocks display interference colors of blue and brown and an appearance of optical isotropy. Chlorites are present in the matrix, pores, and/or rocks units as platy/flaky and partly radial forms. X-ray diffraction (XRD) data indicate that Mg-F...

  17. Implementing fire history and fire ecology in fire risk assessment: the study case of Canton Ticino (southern Switzerland)

    CONEDERA, Marco


    The understanding of the ecological role of wildfires and the knowledge of its past natural and cultural dynamics in different ecosystems have been recognize as a prerequisite for a sustainable land and ecosystem management. The main objective of this work is to propose a methodological approach for implementing the knowledge derived from studies of fire history, fire ecology, and fire suppression strategies in fire risk analyses in a low-to medium fire-prone region such as the Canton Ticino.

  18. Chronic Fatigue Syndrome Treated by Acupuncture and Moxibustion in Combination with Psychological Approaches in 310 Cases

    Guo Junhua


    Objective: To observe clinical therapeutic effect of acupuncture and moxibustion combined with a psychological approach on chronic fatigue syndrome (CFS). Methods: The treatment was given by acupuncture plus moxibustion combined with a psychological approach based on differentiation of symptoms and signs in 310 cases. Results: Of 310 cases observed, 275 cases (88.7%) were clinically cured,28 cases (9%) improved, and 7 cases (2.3%) failed. Conclusion: Acupuncture plus moxibustion combined with a psychological approach is an effective therapy for CFS.

  19. Automated disposal of produced water from a coalbed methane well field, a case history

    This paper provides an overview of the automated disposal system for produced water designed and operated by Taurus Exploration, Inc. This presentation draws from Taurus' case study in the planning, design, construction, and operation of production water disposal facilities for the Mt. Olive well field, located in the Black Warrior Basin of Alabama. The common method for disposing of water produced from coalbed methane wells in the Warrior Basin is to discharge into a receiving stream. The limiting factor in the discharge method is the capability of the receiving stream to assimilate the chloride component of the water discharged. During the winter and spring, the major tributaries of the Black Warrior River are capable of assimilating far more production water than operations can generate. During the summer and fall months, however, these same tributaries can approach near zero flow, resulting in insufficient flow for dilution. During such periods pumping shut-down within the well field can be avoided by routing production waters into a storage facility. This paper discusses the automated production water disposal system on Big Sandy Creek designed and operated by Taurus. This system allows for continuous discharge to the receiving stream, thus taking full advantage of Big Sandy Creek's assimilative capacity, while allowing a provision for excess produced water storage and future stream discharge

  20. The versatility of soil venting in the remediation of contaminated soils: a case history

    This paper presents a case of soil contamination by chlorinated solvents, occurred in the outskirts of Milan (Italy) , successfully remedied by implementing the technique known as soil venting. Scope of the paper is to show how the subject technique can be performed by subsequent phases and how the design can affect the obtainable cleanup goals. The remediation was first implemented by means of four vertical wells driven to depths ranging from 21.0 to 30.5 m below grade. After this phase, which lasted about six months, it was necessary to redefine the cleanup approach in order to maximise the removal of the contaminants still present into the subsoil. Basing on a selective extraction test, the portion of soil which necessitated further treatment was defined. A trench equipped with horizontal drains was therefore created, aimed to remove the soil gas from the upper portion of the subsoil. At the end of this second extraction phase, the laboratory analyses carried out on soil samples indicated the virtual absence of chlorinated solvents in the unsatured subsoil


    DAI Ta-gen; CHEN Gua-da


    According to the available data and field research, based on the diwatheory, the authors have studied the geotectonic evolution history and the associated minerlization in the Victoria area. It has been shown that this area is in fact a part of the Lachlan diwa region. The Victoria area can be divided into geodome fault-fold zone and subsidence zone. The former can be subdivided into three zones, from west to east, which are western uplift zone, central depression zone and eastern uplift zone. The evolution history of the Victoria area can be divided into four stages-Pregeosyncline, geosyncline, plateform and diwa. Each stage has distinct sedimentary, magmatic and structural features. Of the four stages, diwa stage is the most important for minerlization. Diwa stage started in the Devonian. During the development of diwa, a number of granites, which are characterized by high SiO2 and Na2O+K2O, were formed. The granites were abundance with mineralforming material. On the other hand, diwa geotectonism reformed and enriched the geosynclinal or platform ore deposits. Therefore, most of the ore deposits that occurred in the Victoria area are,more or less, related with diwa tectonism.

  2. History effects in the sedimentation of light aerosols in turbulence: the case of marine snow

    Guseva, Ksenia; Feudel, Ulrike; Tél, Tamás


    We analyze the effect of the Basset history force on the sedimentation of nearly neutrally buoyant particles, exemplified by marine snow, in a three-dimensional turbulent flow. Particles are characterized by Stokes numbers much smaller than unity, and still water settling velocities, measured in units of the Kolmogorov velocity, of order one. The presence of the history force in the Maxey-Riley equation leads to individual trajectories which differ strongly from the dynamics of both inertial particles without this force, and ideal settling tracers. When considering, however, a large ensemble of particles, the statistical properties of all three dynamics become more similar. The main effect of the history force is a rather slow, power-law type convergence to an asymptotic settling velocity of the center of mass, which is found numerically to be the settling velocity in still fluid. The spatial extension of the ensemble grows diffusively after an initial ballistic growth lasting up to ca. one large eddy turnove...

  3. Management of deep neck infection by a transnasal approach: a case report

    Baba Yuh


    Full Text Available Abstract Introduction Deep neck infection is a life-threatening condition, and intravenous antibiotic therapy is preferable in the early stages of the disease. However, in the advanced stages, surgical drainage should be performed. Although several surgical treatment strategies are available, it is necessary to standardize treatment according to the patient's general condition and history. Case presentation We report the case of a 68-year-old man with a deep neck abscess and with severe diabetes mellitus and inflammation. Computed tomography identified a deep neck infection extending from the level of the epipharynx to that of the hyoid bone. We performed surgical drainage by transnasal endoscopy. The patient exhibited no evidence of either recurrent disease or post-surgical complications within 30 months of follow-up. Conclusions This case report provides evidence that transnasal endoscopic drainage should be recommended as a standard approach in patients with a deep neck abscess and with a severe general condition, diabetes mellitus, and inflammation.

  4. [A case of basilar impression treated with mandible splitting transoral approach].

    Young-Su, P; Ishikawa, J; Matsumoto, M; Sato, T; Owaki, H


    We report a case of basilar impression treated with mandible splitting transoral approach surgery. A 39-year-old man presented a ten-year history of gait disturbance. He had experienced acceleration of his spastic paraparesis for the past few years. Neurological examination on admission demonstrated tetraparesis (MMT4/5), severe hyperreflexia in his arms and legs, severe sensory loss below C2, urinary retention and inability to open his mouth widely. Radiological findings showed the dens and the body of C2 are deeply invaginated to the atlas and the foramen magnum and medulla and upper cervical cord were markedly compressed by this basilar invagination. After carrying out posterior decompression and occipito-cervical fixation, we attempted to remove the invaginated dens and the C2 vertebral body using a conventional transoral approach. But limitation of mouth opening made operative fields narrow. Consequently because of insufficient anterior decompression his neurological deficits could not be alleviated. Employment of mandible splitting procedure brought about a wide operative view so that complete removal of the residual dens and 70% drilling out of the C2 body was made possible. Postoperative complications were negligible. Finally, great alleviation of his deficits was achieved. Mandible splitting procedure is effective for obtaining a wide operative field on the anterior approach to the craniocervical junction. PMID:9145409

  5. Approaches to the Low Grade Metamorphic History of the Karakaya Complex by Chlorite Mineralogy and Geochemistry

    Sema Tetiker


    Full Text Available In this study, chlorite is used to investigate the diagenetic-metamorphic evolution and accurate geological history of the different units belonging to the Karakaya complex, Turkey. Primary and secondary chlorite minerals in the very low-grade metamorphic rocks display interference colors of blue and brown and an appearance of optical isotropy. Chlorites are present in the matrix, pores, and/or rocks units as platy/flaky and partly radial forms. X-ray diffraction (XRD data indicate that Mg-Fe chlorites with entirely IIb polytype (trioctahedral exhibit a variety of compositions, such as brunsvigite-diabantite-chamosite. The major element contents and structural formulas of chlorite also suggest these were derived from both felsic and metabasic source rocks. Trace and rare earth element (REE concentrations of chlorites increase with increasing grade of metamorphism, and these geochemical changes can be related to the tectonic structures, formational mechanics, and environments present during their generation.

  6. Is Our History of Educational Philosophy Mostly Wrong?: The Case of Isocrates

    Muir, James R.


    There are two very different accounts of the history of educational philosophy and ideas presently available. One account is the work of historical scholars and classicists, and is based on thorough historical research. The other account is the work of educationists and philosophers, and is generally based on little or no historical research in…

  7. The Great Depression: A Textbook Case of Problems with American History Textbooks.

    Miller, Steven L.; Rose, Stephen A.


    The 16 US history textbooks reviewed failed to incorporate economists' research on the causes of the Great Depression and consistently presented information that the economics profession has rejected. Strategies that social studies educators might adopt to improve the quality of economic analysis in textbooks is suggested. (Author/RM)

  8. History of a Journal: the Case of Dragon Magazine (U.S. Edition

    Héctor Sevillano Pareja


    Full Text Available This work study and analyze the history and development of a journal, from its birth, on paper, until its transformation into electronic version. For this analysis we have focused in Dragon Magazine, which was the most important magazine of role playing games (or RPGs published until now, especially with regard to the first commercial RPG, Dungeons & Dragons.

  9. Using "Master Narratives" to Teach History: The Case of the Civil Rights Movement

    Frost, Jennifer


    Narratives encompass ways of thinking historically and several skills of the historian, and Tom Holt believes it is imperative that educators teach--and their students learn--how to construct historical narratives. Understanding and constructing history as narratives opens up the historical project for students. Moreover, demonstrating how…

  10. Therapeutic Intervention in a Case of Ataxic Dysarthria Associated with a History of Amateur Boxing

    McMicken, Betty L.; Ostergren, Jennifer A.; Vento-Wilson, Margaret


    The goals of this study were to (a) describe the presenting features of ataxic dysarthria present in a participant with a long history of amateur boxing, (b) describe a novel application of behavioral principles in the treatment of this participant, and (c) discuss implications in the treatment of ataxic dysarthria secondary to boxing. The…