Academic literature on the topic 'Balance test. eng'

Introduction. The aim of the study was to evaluate concurrent recording of ENG and VNG measurements in selected diagnostic tests in healthy subjects so as to explore potential sensitivity and applicability of this kind of testing in the diagnostics of vertigo. Material and methods. The study was carried out in 50 healthy subjects including 24 women and 26 men aged 20-22 (mean age of 20.5 years) reporting no otorhinolaryngological organ-related complaints and no history of any balance disorders or vertigo. Every patient underwent subjective and objective otoneurological tests, electronystagmographic (ENG) examination including calibration, head-tracking test, optokinetic nystagmus test, rotatory chair test, positional tests according to Cawthorne and Rosen, and Hallpike caloric test as well as videonystagmographic (VNG) examination which included calibration, spontaneous nystagmus evaluation, head-tracking test, positional tests according to Cawthorne and Rosen with neck rotation test, and Hallpike caloric test. At first, ENG and VNG examinations were carried out separately at a 24-hour interval. Concurrent ENG and VNG recording was carried out 48 hours following the last test, with calibration being performed again before both evaluations. The concurrent recording included the spontaneous nystagmus evaluation, positional tests according to Cawthrone and Rose with the neck rotation test, and Hallpike caloric test. Results. No negative mutual interference of the conducted tests has been observed. Both in the concurrent and in the separate recordings, the caloric test revealed lower values of the mean velocity of the nystagmus free phase in the ENG test as compared to the VNG test. No signs of spontaneous nystagmus, as well as no signs of optokinetic and positional nystagmus, were detected in any case. Conclusions. The conducted tests did not reveal any mutual excludability between the selected ENG and VNG diagnostic tests upon concurrent recording. However, the concurrent use of both examinations in the diagnostics of balance disorders and vertigo requires further studies.

OBJECTIVES: To compare the sensitivity of rotational chair (ROTO) versus electronystagmography (ENG) in peripheral vestibular pathology. METHODS: Retrospective chart review. RESULTS: One thousand consecutive patients undergoing evaluation for dizziness and imbalance at a tertiary care referral balance center were reviewed. ROTO was the primary vestibular study used in all patients with ENG used as a confirmatory test at the discretion of the treating physician. A subgroup of 478 patients underwent both ROTO and ENG. Among the patients diagnosed with peripheral vestibulopathy, sensitivity for peripheral vestibulopathy was 71% for ROTO and 31% for ENG. However, specificity was 54% for ROTO and 86% for ENG. CONCLUSIONS: We conclude that in this retrospective cohort with the authors’ clinical diagnoses, ROTO is a more sensitive diagnostic study of peripheral vestibular pathology. The higher sensitivity of ROTO and the higher specificity of ENG may support the use of ROTO as the primary vestibular study and ENG as a supplemental vestibular study. Prospective analysis with distinct diagnostic criteria and defined inclusion criteria are necessary before these results can be widely extrapolated.

<p class="abstract"><strong>Background:</strong> Examination of the vestibulo-ocular reflex is still the investigation of choice for evaluating the vestibular function to rule out peripheral causes. Aim and objectives were to compare the electronystagmographic changes of all peripheral forms of vertigo and to highlight its significance in the diagnosis and management of the same.</p><p class="abstract"><strong>Methods:</strong> This is a prospective study done after obtaining ethical committee approval in a total of 100 patients attending the ENT OPD at Sri Muthukumaran Medical College Hospital & Research Institute with chief complaints of vertigo. Patients diagnosed with chronic suppurative otitis media, hypertensive patients, h/o seizures, recent cardiac illness or patients on cardiac investigations, psychotic disorders, documented CNS lesions, cervical spondylitis, h/o recent eye/ ear surgery are excluded from this study. ENG analysis includes occulomotor testing, positional testing and caloric stimulation. Evaluation of gait and balance is done followed by maneuver induced vertigo testing (dix hallpike and fistula test) along with PTA. Statistical analysis was done using independent sample t test and chi square test to check the hypothesis using statistical package for social studies SPSS version 17. </p><p class="abstract"><strong>Results:</strong> The observations of ENG like spontaneous nystagmus and bi-thermal caloric test responses are represented on a claussens butterfly chart and the corresponding bar codes were obtained. The inferences for different forms of vertigo were studied.</p><p class="abstract"><strong>Conclusions:</strong> ENG is now an accepted routine and basic investigation in the management of all patients suffering from equilibrium disorders. Management consists of diagnosing the underlying pathology and treatment of the same.</p>

AbstractAudiological and vestibular tests were administered conjointly in a neurological or general ORL clinic to exclude cerebellopontine angle (CPA) tumours. This study aimed to assess the efficiency of various tests in achieving that exclusion with the minimum of unnecessary investigations. All patients received the full battery of auditory brainstem responses, acoustic reflex thresholds and decay, alternate binaural loudness balance and ENG and caloric testing. All patients who did not have normal auditory brainstem responses proceeded to high resolution CT scanning. One hundred and fifteen patients were investigated and four acoustic neuromas were diagnosed. The efficiency of these tests in a general ORL clinic is very much poorer than often suggested, due largely to the number of occasions on which the tests cannot be done, and to the very small proportion of the test population who have CPA tumours.

Latar belakang: Gangguan keseimbangan merupakan efek samping pemberian streptomisin yang dapat menurunkan kualitas hidup. Saat ini belum didapatkan penelitian gangguan keseimbangan pada pasien tuberkulosis yang mendapat terapi streptomisin diperiksa menggunakan tes dynamic visual acuity (DVA) dan tes kalori. Tujuan: Penelitian ini bertujuan untuk melihat akurasi pemeriksaan keseimbangan dengan DVA pada pasien TB yang mendapatkan streptomisin dibandingkan dengan elektronistagmografi (ENG). Metode: Penelitian ini merupakan penelitian pra-eksperimental untuk mengetahui perubahan hasil pemeriksaan fungsi keseimbangan vestibuler pada suatu kelompok pasien TB sebelum dan setelah 56 kali pemberian streptomisin, atau bila timbul keluhan gangguan keseimbangan dengan tes DVA dan tes kalori selama April-Oktober 2014. Digunakan rancangan uji diagnostik untuk membandingkan kedua cara pengukuran setelah pengobatan. Hasil: Setelah pemberian terapi didapatkan 31 (77,5%) dari 40 subjek dengan pemeriksaan kalori dan 30 (75%) dengan pemeriksaan DVA. Rerata nilai kalori sebelum terapi sebesar 93,5±32,07°/detik dan setelah terapi sebesar 82,30±38,43°/detik, terjadi perubahan sebesar -11,25±50,55°/detik. Median nilai kenaikan DVA sebelum terapi adalah 0 (minimal 0-maksimal 2) baris dan setelah terapi adalah 3 (minimal 0-maksimal 6) baris, terjadi perubahan sebesar 3 (minimal 0-maksimal 5) baris. Sensitivitas pemeriksaan DVA 83%, spesifisitas 27%, nilai duga positif 17%, nilai duga negatif 90%, rasio kemungkinan positif 1,13, dan rasio kemungkinan negatif 0,63 dengan pemeriksaan kalori sebagai baku emas. Kesimpulan: Pemeriksaan DVA dapat digunakan sebagai skrining pemeriksaan kelemahan vestibuler perifer bilateral pada pasien tuberkulosis yang mendapat terapi streptomisin.Background: Impaired balance is the side effect of Streptomycin administration which can decrease the quality of life Up till now, there is no research yet on dynamic visual acuity (DVA) and caloric test in tuberculosis (TB) patients receiving streptomycin therapy. Objective: This study aims to look at the accuracy of the examination using DVA in TB patients receiving Streptomycin, compared to using electronistagmography (ENG). Methods: A pre-experimental study was used to determine changes in the vestibular function test results in a group of TB patients before and after56times administrationof Streptomycin, or when subjects complained of balance disorders, with DVA test and caloric test during April-October 2014. Designed diagnostic test was used after treatment to compare the two methods of measurement. Result: After therapy there was 31 (77.5%) out of 40 subjects with caloric examination and in 30 (75%) with DVA examination. The mean value of caloric examination before therapy was 93.5±32.07°/sec and after therapy was 82.30±38.43°/sec, the change was -11.25±50.55°/sec. The median value of increased DVA line before therapy was 0 line and after therapy was 3 line, there was a change of 3 (minimum 0-maximum 5) line. DVA examination has a sensitivity of 83%, a specificity of 27%, positive predictive value 17%, negative predictive value 90%, a positive likelihood ratio 1.13 and a negative likelihood ratio 0.63 with caloric examination as the gold standard. Conclusion: DVA examination can be used as a screening tool in bilateral peripheral vestibular weakness in TB patients who received Streptomycin therapy.

Background: Postural stability in humans is largely maintained by vestibular, visual, and somatosensory inputs to the central nervous system. Recent clinical advances in the assessment of otolith function (e.g., cervical and ocular vestibular evoked myogenic potentials [cVEMPs and oVEMPs], subjective visual vertical [SVV] during eccentric rotation) have enabled investigators to identify patients with unilateral otolith impairments. This research has suggested that patients with unilateral otolith impairments perform worse than normal healthy controls on measures of postural stability. It is not yet known if patients with unilateral impairments of the saccule and/or inferior vestibular nerve (i.e., unilaterally abnormal cVEMP) perform differently on measures of postural stability than patients with unilateral impairments of the horizontal SCC (semicircular canal) and/or superior vestibular nerve (i.e., unilateral caloric weakness). Further, it is not known what relationship exists, if any, between otolith system impairment and self-report dizziness handicap. Purpose: The purpose of this investigation was to determine the extent to which saccular impairments (defined by a unilaterally absent cVEMP) and impairments of the horizontal semicircular canal (as measured by the results of caloric testing) affect vestibulospinal function as measured through the Sensory Organization Test (SOT) of the computerized dynamic posturography (CDP). A secondary objective of this investigation was to measure the effects, if any, that saccular impairment has on a modality-specific measure of health-related quality of life. Research Design: A retrospective cohort study. Subjects were assigned to one of four groups based on results from balance function testing: Group 1 (abnormal cVEMP response only), Group 2 (abnormal caloric response only), Group 3 (abnormal cVEMP and abnormal caloric response), and Group 4 (normal control group). Study Sample: Subjects were 92 adult patients: 62 were seen for balance function testing due to complaints of dizziness, vertigo, or unsteadiness, and 30 served as controls. Intervention: All subjects underwent videonystagmography or electronystagmography (VNG/ENG), vestibular evoked myogenic potentials (VEMPs), self-report measures of self-perceived dizziness disability/handicap (Dizziness Handicap Inventory), and tests of postural control (Neurocom Equitest). Data Collection and Analysis: Subjects were categorized into one of four groups based on balance function test results. All variables were subjected to a multifactor analysis of variance (ANOVA). The Dizziness Handicap Inventory (DHI) total scores and equilibrium scores served as the dependent variables. Results: Results showed that patients with abnormal unilateral saccular or inferior vestibular nerve function (i.e., abnormal cVEMP) demonstrated significantly impaired postural control when compared to normal participants. However, this group demonstrated significantly better postural stability when compared to the group with abnormal caloric responses alone and the group with abnormal caloric responses and abnormal cVEMP results. Patients with an abnormal cVEMP did not differ significantly on the DHI compared to the other two impaired groups. Conclusions: We interpret these findings as evidence that a significantly asymmetrical cVEMP in isolation negatively impacts performance on measures of postural control compared to normal subjects but not compared to patients with significant caloric weaknesses. However, patients with a unilaterally abnormal cVEMP do not differ from patients with significant caloric weaknesses in regard to self-perceived dizziness handicap.

This study aims to analyze the effect of nutrition education on knowledge and practice of bringing a balanced meal box among school-aged children. The study design was quasy experimental study with one group pre and post-test. Subjects are 52 students of grade 5 at SDN Babakan Dramaga 04, Bogor District. Nutrition education was done twice for 2 weeks. Post-test 1 nutritional knowledge was done 1 week after intervention, and practice of bringing balance meal box was done 2 weeks after intervention. Post-test 2 and post-test 3 practice of bringing balance meal box was conducted every 2 weeks. Subject’s anthropometry was measure at the beginning and the end of the study. The results showed that knowledge of balanced nutrition increased after receive nutrition education. Subject show an improvement in the practice of bringing balance meal box after nutrition education intervention. This study recommend the school to continue asking the student to bring balance meal box, and monitored by sport teacher. Parents should support students by providing a balanced and nutritious food.

In order to analyze different human brain states related to perception and maintaining of body posture, we implemented an experiment with a balance platform. It is known the cerebral cortex regulates subcortical postural centers to maintain upright balance and posture and balance demands. However, the cortical mechanisms that support standing balance remain elusive. In this work, we present an EEG-based analysis during execution of balance responses with distinct postural demands. The results suggest the existence of common features in the EEG structure associated with distinct activity during balance maintaining. This may give new directions for future research in the field of brain activity, and for the development of brain-computer interfaces.

<p><em>The objective of this research is to examine the relation between several factors which influence balance scorecard (e.g. organization Size, Product Life Cycle, Market Position) and balance scorecard. The further investigation is to examine the relation between balance scorecard and performance with organization Size, Product Life Cycle, and Market Position as moderating variable. The research examined 20 manufacturing companies in 2007. The primary data were collected by questionairre, and the number of respondent are 20 monetary manager of manufacturing business consist of organizational size, product life cycle, market position and the usage of four perspective of balanced scorecard. Statistical test is using multiple regression and moderated regression analysis. The empirical result of this research shows that First, only market position which has significant influence to the usage of balanced scorecard. Second, the usage of balanced scorecard does not benefit for large organization to increase Organizational Performance. Third, the usage of balanced scorecard does not benefit for organization in introduction stage to increase Organizational Performance. And Finally, the usage of Balanced scorecard does not benefit for organization with strong market position to increase Organizational Performance</em></p>

Orientador: Onivaldo Bretan<br>Banca: Paulo Villas Boas<br>Banca: Marco Aurélio Bottino<br>Resumo: A avaliação do equilíbrio do idoso morador da comunidade pode ser realizada usando testes práticos do equilíbrio e da sensibilidade cutânea plantar. Verificar a ocorrência de desequilíbrio e perda da sensibilidade táctil plantar, observar se ocorre associação entre estas alterações e se a realização conjunta dos testes de equilíbrio e da sensibilidade plantar aumenta a precisão da avaliação. Serie de casos compreendendo 45 idosos testados através da escala de equilíbrio de Berg e do teste da sensibilidade cutânea plantar com monofilamentos de nylon. Foram utilizados os testes do qui quadrado, e exato de Fisher e elaboradas curvas ROC para estudo da sensibilidade e especificidade do teste de Berg. Idosos com alteração do equilíbrio e da sensibilidade plantar foram em número de 2 e de 4, respectivamente. Houve associação significante entre queixa de desequilíbrio e sensibilidade (p = 0,047) e houve concordância razoável (Kappa = 0,6457) entre a escala de Berg e o teste da sensibilidade, assim como verificou-se associação significativa entre 6 das 14 tarefas da escala e o teste da sensibilidade plantar. Idosos com vida independente na comunidade, em sua grande maioria, apresentam equilíbrio e sensibilidade cutânea plantar normais, havendo indícios de que as alterações destas funções estão associadas. A realização de testes práticos do equilíbrio e da sensibilidade cutânea plantar aumenta a precisão da avaliação do estado do equilíbrio do idoso.<br>Abstract: Balance assessment in community-dwelling elderly can be performed by using clinical balance and plantar cutaneous sensation tests. To evaluate the occurrence of inbalance and loss of plantar tactile sensitivity as well as to observe the occurence of association between such alterations and whether the consoint performing of these tests increase the accuracy of the evaluation. A series of cases comprising 45 elderly individuals tested by the Berg balance scale and the plantar cutaneous sensation test with nylon monofilaments. Chi-square and Fisher's Exact tests were used and ROC curves were designed to study the sensitivity and specificity of the Berg test. Two and 4 individuals showed alteration in balance and plantar sensation, respectively. There was a significant association between inbalance complaints and sensitivity (p = 0.047), and there was reasonable agreement (Kappa = 0.6457) between the Berg scale and the sensitivity test. A significant association was also found among 6 of the 14 tasks in the Berg scale and the plantar sensitivity test. Most of the elderly individuals leading an independent life in the community showed normal balance and plantar cutaneous sensation, and there was evidence that alterations in these functions are associated. The performance of practical balance and plantar cutaneous sensations tests increases accuracy in the evaluation of elderly individuals' balance conditions.<br>Mestre

The central theme of this thesis is the design of optimal balanced black-box stopping criteria in iterative solvers of symmetric positive-definite, symmetric indefinite, and nonsymmetric linear systems arising from finite element approximation of stochastic (parametric) partial differential equations. For a given stochastic and spatial approximation, it is known that iteratively solving the corresponding linear(ized) system(s) of equations to too tight algebraic error tolerance results in a wastage of computational resources without decreasing the usually unknown approximation error. In order to stop optimally-by avoiding unnecessary computations and premature stopping-algebraic error and a posteriori approximation error estimate must be balanced at the optimal stopping iteration. Efficient and reliable a posteriori error estimators do exist for close estimation of the approximation error in a finite element setting. But the algebraic error is generally unknown since the exact algebraic solution is not usually available. Obtaining tractable upper and lower bounds on the algebraic error in terms of a readily computable and monotonically decreasing quantity (if any) of the chosen iterative solver is the distinctive feature of the designed optimal balanced stopping strategy. Moreover, this work states the exact constants, that is, there are no user-defined parameters in the optimal balanced stopping tests. Hence, an iterative solver incorporating the optimal balanced stopping methodology that is presented here will be a black-box iterative solver. Typically, employing such a stopping methodology would lead to huge computational savings and in any case would definitely rule out premature stopping. The constants in the devised optimal balanced black-box stopping tests in MINRES solver for solving symmetric positive-definite and symmetric indefinite linear systems can be estimated cheaply on-the- fly. The contribution of this thesis goes one step further for the nonsymmetric case in the sense that it not only provides an optimal balanced black-box stopping test in a memory-expensive Krylov solver like GMRES but it also presents an optimal balanced black-box stopping test in memory-inexpensive Krylov solvers such as BICGSTAB(L), TFQMR etc. Currently, little convergence theory exists for the memory-inexpensive Krylov solvers and hence devising stopping criteria for them is an active field of research. Also, an optimal balanced black-box stopping criterion is proposed for nonlinear (Picard or Newton) iterative method that is used for solving the finite dimensional Navier-Stokes equations. The optimal balanced black-box stopping methodology presented in this thesis can be generalized for any iterative solver of a linear(ized) system arising from numerical approximation of a partial differential equation. The only prerequisites for this purpose are the existence of a cheap and tight a posteriori error estimator for the approximation error along with cheap and tractable bounds on the algebraic error.

Die posturale Instabilität zählt zu den am meisten beeinträchtigenden Symptomen der Parkinson-Krankheit. Die Störung der motorischen Gleichgewichtskontrolle ist progressiv im Verlauf und weder durch medikamentöse noch durch operative Methoden zufriedenstellend einzudämmen. In der Bewegungstherapie werden häufig Gleichgewichtsübungen empfohlen, um ein Fortschreiten der körperlichen Einschränkungen zu verringern. Der aktuelle wissenschaftliche Stand lässt allerdings eine Einschätzung zur Effektivität von Gleichgewichtstraining bei Parkinsonpatienten kaum zu. Dies ist u. a. auf einen Mangel an geeigneten Testverfahren zur Beurteilung der posturalen Instabilität zurückzuführen. In der vorliegenden Untersuchung wurden die Auswirkungen eines 12-wöchigen Gleichgewichtstrainings bei Parkinsonpatienten auf die posturale Stabilität in einem umfassenden Testdesign, bestehend aus alltagsmotorischen, biomechanischen und subjektiven Testverfahren evaluiert. In nahezu allen eingesetzten Testverfahren zeigte sich ein mehr oder weniger deutlicher Trend zu einer Verbesserung der posturalen Stabilität. Durch den Einsatz einer Testbatterie konnte somit insgesamt von einem positiven Einfluss eines Gleichgewichtstrainings auf die posturale Stabilität von Parkinsonpatienten ausgegangen werden. Weiterhin werden zahlreiche positive Nebeneffekte bzgl. der allgemeinen Fitness, der psychischen und sozialen Situation durch ein zielgerichtetes Gruppentraining unter geschulter Anleitung vermutet.

The master thesis analyses electrical conductivity of lead-free solder joints. The test method design for monitoring the electrical conductivity of the soldered joint is described in the practical part. Simulated BGA package with four pin (BGA4) is used for experiments. Tested PCBs are subjected to isothermal aging and current load. During isothermal aging is measured electrical conductivity and optical microscope is used for intermetallic layer (IMC) growth observation. Two types of surface finish (OSP and ENIG) are used for tests and three diameters of solder terminal balls (solder alloy SAC405). The influence of the ratio area connection / solder volume (ratio S / V) on lead-free solder joints conductivity was evaluated.

This volume contains the first Italian critical edition with introduction, translation and commentary of Euripides’ Iphigenia in Aulis. The tragedy, exhibited posthumously in 405 BCE, stages the first mythical segment of the Trojan War, namely the sacrifice of Iphigenia, daughter of king Agamemnon, head of the Greek army, in order to propitiate the winds that should lead the navy to Troy. A tragedy of intrigue and unveiling, in which all the characters try to oppose the sacrifice, judged to be an impiety despite its sacred essence. It is therefore a tragedy without gods, in which characters of modest moral stature move, unstable, ready to sudden changes of mind, and among whom the protagonist stands out: the girl who, having overcome the dismay for the destiny awaiting her, voluntarily moves towards death on the altar, for a flimsy patriotic ideal and with the illusion of achieving immortal glory. Since the end of the eighteenth century, the text of this tragedy, handed over to us by the manuscript tradition, has been exposed more than others to a rigorous philological criticism that has broken its unity, through considerable expunctions of entire sections and sequences of verses. The volume traces the phases of this critical work, showing its methods – and sometimes its excesses – and choosing a balance line in the constitution of the text. The overall exegesis of the tragedy, which I propose in this study, consists in the belief that, despite the exodus being spurious, the finale, in view of which the entire dramaturgy was composed, still had to contemplate Iphigenia’s salvation. In fact, if the Panhellenic ideal of defence against the barbarians is now meaningless, and if a war of destruction, to begin with, needs the death of an innocent person, then this death must be transcended and the horror of human sacrifice must dissolve. It therefore seems that, once political current events become opaque, the poet’s research tends to create situations of great patheticism in an aesthetic setting of refined beauty.

Polyuria describes the passage of more than 3 l of urine a day. This is an arbitrary definition, and the term is commonly applied to patients who are complaining of passing larger than normal volumes of urine. As water excretion is tightly regulated by the body to maintain normal osmolality, water excretion varies greatly depending on intake. Polyuria may be physiological or pathological. A patient with polyuria often presents with nocturia, urination overnight that disturbs sleep. It is usually accompanied by polydipsia (to maintain normal fluid balance). In hospital the commonest causes of polyuria are diuretic therapy and recovery from an acute renal injury (e.g. acute tubular necrosis or obstruction). This polyuric phase can result in an impressive diuresis (8–10 l/day) before tubular cells recover their ability to concentrate urine. During this period, patients are vulnerable to dehydration and may require intravenous fluid replacement. Following pituitary surgery, the urine output should be closely monitored for evidence of new diabetes insipidus. This chapter covers the approach to diagnosis, diagnostic tests, therapy, and prognosis.

This chapter examines the ‘role’ or ‘value’ of the persistent objector rule. Firstly, the chapter sets out and critiques the voluntarist conception of the persistent objector rule in more detail than has been done in previous chapters. It then considers competing theoretical approaches to international legal obligation, broadly grouped together as being ‘communitarian’ in nature. Such communitarian approaches have tended to dismiss the persistent objector rule along with their dismissal of voluntarism. It is argued that holistic, absolutist theoretical accounts of customary international law fail to take into account its chaotic nature in reality. The chapter therefore argues this it is problematic to appraise the value of the persistent objector rule from the perspective of either voluntarism or communitarianism. Drawing upon some insights from rational choice theory, it is argued that the rule is inherently one of balance, and that its true value lies in its practical benefits both for individual objectors and the wider international community. The chapter then assesses the rule's various functional benefits as a ‘safety valve’. The chapter also examines the contributions that persistent objection can make to the development of customary international law. At the end of the chapter, the text briefly notes that many of the benefits of the persistent objector rule may, at least in part, stem from the perception of state autonomy that it creates.

La obra de Robert Alexy ha tenido una amplia repercusión en la filosofía del derecho y el derecho constitucional contemporáneo. Este volumen incorpora varios ensayos de profesores procedentes de diferentes partes del mundo y cuyo estudio sobre diversos aspectos del pensamiento de Alexy es indispensable. El primer ensayo de Giogio Bongiovanni, profesor de la Universidad de Bolonia, Italia, no ofrece una interpretación del libro de Alexy Begriff und Geltung des Rechts, un famoso texto en el cual se contrapone el constitucionalismo y el legalismo. En el referido libro, “Alexy propone un constitucionalismo “templado” (gemäßigten Konstitutionalismus), es decir, una teoría jurídica que, a partir de una interpretación por “valores” de los sistemas constitucionales, intenta mediar la dimensión moral del derecho con sus caracteres institucionales”. La referida interpretación por “valores” de Alexy tiene dos consecuencias: “por un lado, que, en base a esta consideración de la Constitución, el derecho no se reduce a la ley, sino que el primer concepto tiene un ámbito más amplio en relación a estos principios; por otro lado, que todas las actividades de aplicación del derecho no pueden ser consideradas como de simple subsunción del caso a la norma sino que la decisión jurisprudencial debe ser vista como una actividad de ponderación y balanceo de los distintos principios respecto a los casos. En el lado opuesto del legalismo, que a partir de las primeras posiciones de E. Forsthoff llega hasta las consideraciones de E.W. Böckenförde, aparecen diferentes objeciones a esta interpretación de la Constitución y los derechos”. Según afirma Bongiovanni, se pueden indicar cuatro direcciones de análisis. En primer lugar, Schmitt entendió que la referencia a los valores en la interpretación del Derecho conduce a la negación del pluralismo y, por tanto, a la formación de jerarquías de valores y disvalores. En segundo lugar, los valores significarían el desplazamiento de los espacios de deliberación social pues implicarían el decisionismo de los jueces y un amplio margen para la discrecionalidad política. En tercer lugar, según Forsthoff al recurrir a los valores, se extiende incontroladamente el ámbito de intervención del Estado en la vida social. Finalmente, desde el punto de vista del positivismo jurídico, recurrir a los valores significaría la pérdida de la certidumbre en el Derecho y, por tanto, la afectación de un valor tan importante como la seguridad jurídica. Pero retomemos la idea de Alexy de un constitucionalismo templado, el cual se resumen en tres argumentos: a) El autor propone una teoría de corte no - positivista fundamentada en una conexión débil entre derecho y moral; b) Una teoría de esta naturaleza implicaría la ampliación del concepto de derecho en sus aspectos procesales; c) En tercer lugar, sobre el problema de quién decide, la teoría propuesta señala la existencia de una jerarquía de los argumentos en la interpretación que medien entre reglas y principios. En la obra de Alexy “la tesis de la conexión se construye en contraposición con la conocida tesis positivista de la separación. Para este último el derecho puede tener cualquier contenido y, por este motivo, no incluye elementos morales, o, más concretamente, sostiene que no existe una necesaria conexión conceptual entre derecho y moral. El concepto de derecho es por ello definible, en esta última perspectiva sobre la base de dos elementos fundamentales: la positividad (concepto de derecho como legislación) y la eficacia. La tesis de la conexión se desarrolla en relación a dos casos: en primer lugar, respecto a la ley injusta. Esto corresponde, en la visión de Alexy, a los casos excepcionales; en segundo lugar, frente al perfeccionamiento del derecho, es decir, para su funcionamiento ordinario”. Ahora bien, en la teoría de Alexy el papel desempeñado por el poder judicial está estrechamente relacionado al centro del argumento de los principios. “Alexy sostiene que sobre la base de la complicación estructural del derecho introducida por los sistemas democrático-constitucionales (incorpación de los principios en el sistema jurídico), el rol del juez se convierte en no más que un simple ejecutor del derecho, sino que su función se amplía en dirección del balanceo entre diversos principios”. En gran medida, la concepción del rol de los jueces en el constitucionalismo está definido por la conexión entre derecho y moral desarrollado a partir de tres tesis: la tesis de la incorporación, la tesis de la moral y la tesis de la corrección. Asimismo, la interpretación se define según dos dimensiones una práctico/normativa y otra institucional. Desde la dimensión práctico/normativa la interpretación tiene por objeto lo obligatorio, prohibido, permitido y autorizado en las normas jurídicas; y la dimensión institucional tiene lugar en un contexto autoritativo, es decir, que en caso de divorcio hay una instancia que decide con efecto vinculante. Como afirma Bongiovanni “si se considera globalmente el enfoque alexiano, parece evidente que buena parte de sus tesis relativas a la conexión entre derecho y moral no son otra cosa que una aplicación de la Sonderfallthese, la tesis es que el discursojurídico forma parte del discurso práctico racional (Alexy 1998). Esta premisa permite a Alexy sostener tanto la pretensión de corrección, como la idea de la interpretación como argumento, es decir, como caso especial de “la argumentación práctico general o del discurso práctico general”. Si observamos detalladamente, sería la tesis del caso especial la que posibilita la configuración del problema de la conexión entre derecho y moral. Aunque, se debe reconocer que esto no parece convincente porque, siguiendo a Bongiovanni, la tesis de la conexión puede estar basada en argumentos de tipo empírico o histórico-evolutivo. “Esta segunda vía, que privilegia el dato de la incorporación de los principios al interior de los sistemas jurídicos contemporáneos, permite, además, la conjugación de las consideraciones de Alexy con todas las teorías de derivación positivista que en la consideración de la simple validez formal de las normas han añadido la necesidad de la valoración de su validez material”. El ensayo David Bilchitz, profesor de la Universidad de Johannesburgo, Sudáfrica, está concentrado en el análisis de uno de los pasos del test de proporcionalidad: el examen de necesidad. Para Bilchitz, “la proporcionalidad, en última instancia, trata de evaluar los beneficios obtenidos por la medidas de infracción contra los daños causados por violar los derechos fundamentales. Los jueces han desarrollado un proceso de razonamiento para dar estructura a dicho análisis. La primera parte de este proceso implica considerar el propósito de la medida que limita un derecho fundamental”. En su ensayo, Bilchitz desarrolla una interpretación estricta de la necesidad y las diversas dificultades que se producen, para ello divide los elementos de esta interpretación en cuatro sub-componentes: el componente posible que es “una gama de posibles alternativas a las medidas que el gobierno quiere empleardeben ser identificadas”, el componente instrumental que es “la relación entre la medida gubernamental bajo consideración, las alternativas identificadas en SN1 [el componente posible] y el objetivo que se pretende lograr debe ser determinado. Sólo aquellos que son “alternativas” igualmente eficaces para lograr el objetivo deben seguir siéndolo para su consideración en las siguientes partes del examen”; el impacto del componente, en el cual “las diferentes repercusiones en los derechos fundamentales de la medida y las alternativas identificadas en SN2 [el impacto del componente] deben ser determinadas; y, el componente comparativo, el cual indica que “una comparación global debe ser emprendida entre la medida gubernamental y las posibles alternativas y un juicio sobre si la medida adoptada por el gobierno es la menos restrictiva de los derechos en cuestión que pueda lograr el objetivo del gobierno en comparación con todas las otras posibles alternativas igualmente eficaces”. En su ensayo, Bilchitz ha querido analizar y profundizar en el componente de la necesidad del principio de proporcionalidad. Con tal finalidad, explica lo que ha denominado como la interpretación estricta de la necesidad, asimsimo, demuestra que una interpretación estricta de la necesidad puede generar dos problemas opuestos: “o se considera demasiado fuerte la deferencia sustancial por parte de los tribunales de otras ramas o es demasiado débil, como resultado de una construcción estricta del componente de igual efectividad”. Del mismo modo, el autor reflexiona sobre la interpretación estricta de la interpretación en cuatro partes y examina cada una de ellas, pudiendo demostrar que en cada parte se presentan juicios cualitativos y normativos que implican que la interpretación estricta no puede justificarse adecuadamente. Por ello, el autor es partidario de una interpretación moderada del examen de necesidad.

Bones are multifunctional passive organs of movement that supports soft tissue and directly attached muscles. They also protect internal organs and are a reserve of calcium, phosphorus and magnesium. Each bone is covered with periosteum, and the adjacent bone surfaces are covered by articular cartilage. Histologically, the bone is an organ composed of many different tissues. The main component is bone tissue (cortical and spongy) composed of a set of bone cells and intercellular substance (mineral and organic), it also contains fat, hematopoietic (bone marrow) and cartilaginous tissue. Bones are a tissue that even in adult life retains the ability to change shape and structure depending on changes in their mechanical and hormonal environment, as well as self-renewal and repair capabilities. This process is called bone turnover. The basic processes of bone turnover are: • bone modeling (incessantly changes in bone shape during individual growth) following resorption and tissue formation at various locations (e.g. bone marrow formation) to increase mass and skeletal morphology. This process occurs in the bones of growing individuals and stops after reaching puberty • bone remodeling (processes involve in maintaining bone tissue by resorbing and replacing old bone tissue with new tissue in the same place, e.g. repairing micro fractures). It is a process involving the removal and internal remodeling of existing bone and is responsible for maintaining tissue mass and architecture of mature bones. Bone turnover is regulated by two types of transformation: • osteoclastogenesis, i.e. formation of cells responsible for bone resorption • osteoblastogenesis, i.e. formation of cells responsible for bone formation (bone matrix synthesis and mineralization) Bone maturity can be defined as the completion of basic structural development and mineralization leading to maximum mass and optimal mechanical strength. The highest rate of increase in pig bone mass is observed in the first twelve weeks after birth. This period of growth is considered crucial for optimizing the growth of the skeleton of pigs, because the degree of bone mineralization in later life stages (adulthood) depends largely on the amount of bone minerals accumulated in the early stages of their growth. The development of the technique allows to determine the condition of the skeletal system (or individual bones) in living animals by methods used in human medicine, or after their slaughter. For in vivo determination of bone properties, Abstract 10 double energy X-ray absorptiometry or computed tomography scanning techniques are used. Both methods allow the quantification of mineral content and bone mineral density. The most important property from a practical point of view is the bone’s bending strength, which is directly determined by the maximum bending force. The most important factors affecting bone strength are: • age (growth period), • gender and the associated hormonal balance, • genotype and modification of genes responsible for bone growth • chemical composition of the body (protein and fat content, and the proportion between these components), • physical activity and related bone load, • nutritional factors: – protein intake influencing synthesis of organic matrix of bone, – content of minerals in the feed (CA, P, Zn, Ca/P, Mg, Mn, Na, Cl, K, Cu ratio) influencing synthesis of the inorganic matrix of bone, – mineral/protein ratio in the diet (Ca/protein, P/protein, Zn/protein) – feed energy concentration, – energy source (content of saturated fatty acids - SFA, content of polyun saturated fatty acids - PUFA, in particular ALA, EPA, DPA, DHA), – feed additives, in particular: enzymes (e.g. phytase releasing of minerals bounded in phytin complexes), probiotics and prebiotics (e.g. inulin improving the function of the digestive tract by increasing absorption of nutrients), – vitamin content that regulate metabolism and biochemical changes occurring in bone tissue (e.g. vitamin D3, B6, C and K). This study was based on the results of research experiments from available literature, and studies on growing pigs carried out at the Kielanowski Institute of Animal Physiology and Nutrition, Polish Academy of Sciences. The tests were performed in total on 300 pigs of Duroc, Pietrain, Puławska breeds, line 990 and hybrids (Great White × Duroc, Great White × Landrace), PIC pigs, slaughtered at different body weight during the growth period from 15 to 130 kg. Bones for biomechanical tests were collected after slaughter from each pig. Their length, mass and volume were determined. Based on these measurements, the specific weight (density, g/cm3) was calculated. Then each bone was cut in the middle of the shaft and the outer and inner diameters were measured both horizontally and vertically. Based on these measurements, the following indicators were calculated: • cortical thickness, • cortical surface, • cortical index. Abstract 11 Bone strength was tested by a three-point bending test. The obtained data enabled the determination of: • bending force (the magnitude of the maximum force at which disintegration and disruption of bone structure occurs), • strength (the amount of maximum force needed to break/crack of bone), • stiffness (quotient of the force acting on the bone and the amount of displacement occurring under the influence of this force). Investigation of changes in physical and biomechanical features of bones during growth was performed on pigs of the synthetic 990 line growing from 15 to 130 kg body weight. The animals were slaughtered successively at a body weight of 15, 30, 40, 50, 70, 90, 110 and 130 kg. After slaughter, the following bones were separated from the right half-carcass: humerus, 3rd and 4th metatarsal bone, femur, tibia and fibula as well as 3rd and 4th metatarsal bone. The features of bones were determined using methods described in the methodology. Describing bone growth with the Gompertz equation, it was found that the earliest slowdown of bone growth curve was observed for metacarpal and metatarsal bones. This means that these bones matured the most quickly. The established data also indicate that the rib is the slowest maturing bone. The femur, humerus, tibia and fibula were between the values of these features for the metatarsal, metacarpal and rib bones. The rate of increase in bone mass and length differed significantly between the examined bones, but in all cases it was lower (coefficient b &lt;1) than the growth rate of the whole body of the animal. The fastest growth rate was estimated for the rib mass (coefficient b = 0.93). Among the long bones, the humerus (coefficient b = 0.81) was characterized by the fastest rate of weight gain, however femur the smallest (coefficient b = 0.71). The lowest rate of bone mass increase was observed in the foot bones, with the metacarpal bones having a slightly higher value of coefficient b than the metatarsal bones (0.67 vs 0.62). The third bone had a lower growth rate than the fourth bone, regardless of whether they were metatarsal or metacarpal. The value of the bending force increased as the animals grew. Regardless of the growth point tested, the highest values were observed for the humerus, tibia and femur, smaller for the metatarsal and metacarpal bone, and the lowest for the fibula and rib. The rate of change in the value of this indicator increased at a similar rate as the body weight changes of the animals in the case of the fibula and the fourth metacarpal bone (b value = 0.98), and more slowly in the case of the metatarsal bone, the third metacarpal bone, and the tibia bone (values of the b ratio 0.81–0.85), and the slowest femur, humerus and rib (value of b = 0.60–0.66). Bone stiffness increased as animals grew. Regardless of the growth point tested, the highest values were observed for the humerus, tibia and femur, smaller for the metatarsal and metacarpal bone, and the lowest for the fibula and rib. Abstract 12 The rate of change in the value of this indicator changed at a faster rate than the increase in weight of pigs in the case of metacarpal and metatarsal bones (coefficient b = 1.01–1.22), slightly slower in the case of fibula (coefficient b = 0.92), definitely slower in the case of the tibia (b = 0.73), ribs (b = 0.66), femur (b = 0.59) and humerus (b = 0.50). Bone strength increased as animals grew. Regardless of the growth point tested, bone strength was as follows femur &gt; tibia &gt; humerus &gt; 4 metacarpal&gt; 3 metacarpal&gt; 3 metatarsal &gt; 4 metatarsal &gt; rib&gt; fibula. The rate of increase in strength of all examined bones was greater than the rate of weight gain of pigs (value of the coefficient b = 2.04–3.26). As the animals grew, the bone density increased. However, the growth rate of this indicator for the majority of bones was slower than the rate of weight gain (the value of the coefficient b ranged from 0.37 – humerus to 0.84 – fibula). The exception was the rib, whose density increased at a similar pace increasing the body weight of animals (value of the coefficient b = 0.97). The study on the influence of the breed and the feeding intensity on bone characteristics (physical and biomechanical) was performed on pigs of the breeds Duroc, Pietrain, and synthetic 990 during a growth period of 15 to 70 kg body weight. Animals were fed ad libitum or dosed system. After slaughter at a body weight of 70 kg, three bones were taken from the right half-carcass: femur, three metatarsal, and three metacarpal and subjected to the determinations described in the methodology. The weight of bones of animals fed aa libitum was significantly lower than in pigs fed restrictively All bones of Duroc breed were significantly heavier and longer than Pietrain and 990 pig bones. The average values of bending force for the examined bones took the following order: III metatarsal bone (63.5 kg) &lt;III metacarpal bone (77.9 kg) &lt;femur (271.5 kg). The feeding system and breed of pigs had no significant effect on the value of this indicator. The average values of the bones strength took the following order: III metatarsal bone (92.6 kg) &lt;III metacarpal (107.2 kg) &lt;femur (353.1 kg). Feeding intensity and breed of animals had no significant effect on the value of this feature of the bones tested. The average bone density took the following order: femur (1.23 g/cm3) &lt;III metatarsal bone (1.26 g/cm3) &lt;III metacarpal bone (1.34 g / cm3). The density of bones of animals fed aa libitum was higher (P&lt;0.01) than in animals fed with a dosing system. The density of examined bones within the breeds took the following order: Pietrain race&gt; line 990&gt; Duroc race. The differences between the “extreme” breeds were: 7.2% (III metatarsal bone), 8.3% (III metacarpal bone), 8.4% (femur). Abstract 13 The average bone stiffness took the following order: III metatarsal bone (35.1 kg/mm) &lt;III metacarpus (41.5 kg/mm) &lt;femur (60.5 kg/mm). This indicator did not differ between the groups of pigs fed at different intensity, except for the metacarpal bone, which was more stiffer in pigs fed aa libitum (P&lt;0.05). The femur of animals fed ad libitum showed a tendency (P&lt;0.09) to be more stiffer and a force of 4.5 kg required for its displacement by 1 mm. Breed differences in stiffness were found for the femur (P &lt;0.05) and III metacarpal bone (P &lt;0.05). For femur, the highest value of this indicator was found in Pietrain pigs (64.5 kg/mm), lower in pigs of 990 line (61.6 kg/mm) and the lowest in Duroc pigs (55.3 kg/mm). In turn, the 3rd metacarpal bone of Duroc and Pietrain pigs had similar stiffness (39.0 and 40.0 kg/mm respectively) and was smaller than that of line 990 pigs (45.4 kg/mm). The thickness of the cortical bone layer took the following order: III metatarsal bone (2.25 mm) &lt;III metacarpal bone (2.41 mm) &lt;femur (5.12 mm). The feeding system did not affect this indicator. Breed differences (P &lt;0.05) for this trait were found only for the femur bone: Duroc (5.42 mm)&gt; line 990 (5.13 mm)&gt; Pietrain (4.81 mm). The cross sectional area of the examined bones was arranged in the following order: III metatarsal bone (84 mm2) &lt;III metacarpal bone (90 mm2) &lt;femur (286 mm2). The feeding system had no effect on the value of this bone trait, with the exception of the femur, which in animals fed the dosing system was 4.7% higher (P&lt;0.05) than in pigs fed ad libitum. Breed differences (P&lt;0.01) in the coross sectional area were found only in femur and III metatarsal bone. The value of this indicator was the highest in Duroc pigs, lower in 990 animals and the lowest in Pietrain pigs. The cortical index of individual bones was in the following order: III metatarsal bone (31.86) &lt;III metacarpal bone (33.86) &lt;femur (44.75). However, its value did not significantly depend on the intensity of feeding or the breed of pigs.

Abstract This paper deals with writing a story about water, e.g. the River Nile. It suggests that, to find a story, an interesting one, with a new angle, journalists need to be resourceful and attend relevant events related to water. They should then closely follow up news and analyses, especially in local media, while simultaneously keeping an eye on international organizations and subscribing to their mailing lists - and, most importantly, talking informally to experts. It suggests that the writer should put all his knowledge and practice to a difficult test, starting from finding a new idea, then reaching an expert who is willing to give comments, and making a real balance by bringing together all the voices from the different countries and diverse views, and seeking balance and objectivity while writing the story.

A database driven multi-agent model has been developed with automated access to US bank level FDIC Call Reports that yield data on balance sheet and off balance sheet activity, respectively, in Residential Mortgage Backed Securities (RMBS) and Credit Default Swaps (CDS). The simultaneous accumulation of RMBS assets on US banks’ balance sheets and also large counterparty exposures from CDS positions characterized the $2 trillion Collateralized Debt Obligation (CDO) market. The latter imploded at the end of 2007 with large scale systemic risk consequences. Based on US FDIC bank data, that could have been available to the regulator at the time, the authors investigate how a CDS negative carry trade combined with incentives provided by Basel II and its precursor in the US, the Joint Agencies Rule 66 Federal Regulation No. 56914, which became effective on January 1, 2002, on synthetic securitization and Credit Risk Transfer (CRT), led to the unsustainable trends and systemic risk. The resultant market structure with heavy concentration in CDS activity involving 5 US banks can be shown to present too interconnected to fail systemic risk outcomes. The simulation package can generate the financial network of obligations of the US banks in the CDS market. The authors aim to show how such a Multi-Agent Financial Network (MAFN) model is well suited to monitor bank activity and to stress test policy for perverse incentives on an ongoing basis.

This chapter introduces Richard Rodney Bennett's A Garland for Marjory Fleming for the young, relatively inexperienced performer. Here, the five songs are perfectly balanced to provide contrast of pace and mood. The supple vocal lines are not perhaps quite as simple as they may first appear: rhythms contain a few surprises, and subtle shadings underpin key moments in the text. The central song, ‘On Jessy Watsons Elopement’, in particular, requires good rhythmic articulation and some breadth of range and dynamic. The final piece, ‘Sonnet on a Monkey’, is a gem of artfulness and grace, sure to charm audiences, bringing the cycle to an end in exuberant, tongue-in-cheek vein.

The conclusion provides a synthetic summary of the book’s main arguments and extends its lessons into the eighteenth century. Long after the age of exploration, nonverbal communication continued to occupy a crucial place in French colonization schemes and strategies, in Indigenous resistance to colonial ambitions and the pursuit of Indian nations’ agendas, and in the joint creation of an evolving balance of power in the Atlantic world. The French claimed a special proficiency in nonverbal forms of expression that gave them an edge against their European competitors. Because Indigenous practices and oral traditions were in reality so influential in shaping colonies, the conclusion puts to the test the French’ claim of exceptionalism, and brings comparisons to the experiences of the Spanish and the English in select regions of the Americas. Drawing preliminary conclusions, the author invites further scholarship on nonverbal communication in these colonial contexts. In the end, the French mastery of nonverbal communication was not a mark of a more benign style of colonialism, but instead directly contributed to the violence, erasure, and subjection applied against Indigenous peoples in colonial America.

Stable isotopes serve as naturally occurring tracers that can provide much information about how chemical reactions proceed in nature, such as which reactants are consumed and at what temperatures reactions occur. The stable isotopes of several of the lighter elements are sufficiently abundant and fractionate strongly enough to be of special usefulness. Foremost in importance are hydrogen, carbon, oxygen, and sulfur. The strong conceptual link between stable isotopes and chemical reaction makes it possible to integrate isotope fractionation into reaction modeling, allowing us to predict not only the mineralogical and chemical consequences of a reaction process, but also the isotopic compositions of the reaction products. By tracing the distribution of isotopes in our calculations, we can better test our reaction models against observation and perhaps better understand how isotopes fractionate in nature. Bowers and Taylor (1985) were the first to incorporate isotope fractionation into a reaction model. They used a modified version of EQ3/EQ6 (Wolery, 1979) to study the convection of hydrothermal fluids through the oceanic crust, along midocean ridges. Their calculation method is based on evaluating mass balance equations, as described in this chapter. As originally derived, however, the mass balance model has an important (and well acknowledged) limitation: implicit in its formulation is the assumption that fluid and minerals in the modeled system remain in isotopic equilibrium over the reaction path. This assumption is equivalent to assuming that isotope exchange between fluid and minerals occurs rapidly enough to maintain equilibrium compositions. We know, however, that isotope exchange in nature tends to be a slow process, especially at low temperature (e.g., O’Neil, 1987). This knowledge comes from experimental study (e.g., Cole and Ohmoto, 1986) as well as from the simple observation that, unless they have reacted together, groundwaters and minerals are seldom observed to be in isotopic equilibrium with each other. In fact, if exchange were a rapid process, it would be very difficult to interpret the origin of geologic materials from their isotopic compositions: the information would literally diffuse away. Lee and Bethke (1996) presented an alternative technique, also based on mass balance equations, in which the reaction modeler can segregate minerals from isotopic exchange. By segregating the minerals, the model traces the effects of the isotope fractionation that would result from dissolution and precipitation reactions alone.

Each prong of EU equality law identifies specific grounds for differential treatment as well as specific fields in which differences of treatment are suspect. The precise applicable legal tools may—and often do—differ from one ground to the other and from one field to the other. Upstream, different legal bases, institutions, and procedures define the contours of the corresponding branches of EU equality law. Chapter 3 identifies the main components of this complex legal framework before analysing the competing role of the drafters of the Treaty, the EU’s judiciary, and political institutions in shaping EU equality law. The parameters of the doctrinal debate examined in the previous chapter are then used to revisit cases such as Barber, Grant, or Alimanovic as well as questions of judicial review (e.g. Test-Achats) and horizontal direct effect (Kücükdeveci) of the rules on equal treatment. It is submitted that three elements determine the pre-conditions for a healthy balance between the constitutional value of the relevant right, and the political dimension of decision-making on fundamental rights: the constitutional norm ought to explicitly call for political guidance, political institutions are invited to assert the policy implications of decision-making in the field, and the EU judiciary may have to refrain from palliating limits or imperfections resulting from the policy-making process.

To define a future for the work described in this book, it is essential to keep in mind the broad goals which motivated the efforts in the first place. Useful and usable software is desired, to be sure, but the vision of manipulating and especially instructing a realistically behaved animated agent is the greater ambition. Some of our visions for the near future are presented, not just for the sake of prognostication, but for its exciting prospects and possibilities. Any discussion of the future of software must take into account the extraordinary pace of developments in the hardware arena. Even conservative predictions of hardware capabilities such as speed and capacity over the five year term lead one perilously close to science fiction. Accordingly, predictions of “better, faster, cheaper, more reliable, more fault tolerant, more highly parallel computers” are easy to make but do little to inform us of the applications these fantastic machines will facilitate. Rather, as general purpose computers improve in all these ways, specialized hardware solutions will decrease in importance and robust, usable software and symbiotic human-computer interfaces will remain the crucial link between a task and a solution. Transforming research into practice is a lengthy process, consisting of a flow of concepts from ideas through algorithms to implementations, from testing and analysis through iterated design, and finally transfer of demonstratably workable concepts to external users and actual applications. This entire process may span years, from the initial description of the concept to a fielded system. The publication of initial results often breeds over-optimism and has been known to lead researchers to allow false expectations to arise in the minds of potential users, with unfortunate results. (Automatic machine translation of text, speech understanding, and early promises of Artificial Intelligence problem solving are good examples of premature speculations.) At the other end of the spectrum, however, are concepts which take a long time to work their way into mainstream technological consciousness. (3D computer graphics is a good example where concepts and even working systems pre-dated widespread commercial availability by more than a decade.) So we will attempt to strike a balance in making speculations: while looking toward a long term research plan we will generally consider technology transfer to occur when serious but sympathetic users can experiment and accomplish real work with it.

Abstract Recent multiphase-pump developments encountered several rotordynamic issues with smooth balance-piston seals, creating a need to better understand the performance of annular seals under multiphase-flow operation. This paper presents measurements of static and dynamic characteristics of a long smooth seal (L/D = 0.75, D = 114.686 mm, and Cr = 0.200 mm) operating under pure- and mainly air condition in which air is mixed with silicone oil (PSF-5cSt). Tests are performed at a supply pressure of 62.1 bars-a, three rotation speeds (5, 10, 15 krpm), three pressure ratios (PRs) (0.6, 0.5, 0.4), for a range of inlet liquid volume fraction (LVFi) from 0% to 8%. The results are then compared to: (1) the previous test reported by Zhang et al. (2017, “Experimental Study of the Static and Dynamic Characteristics of a Long Smooth Seal with Two-Phase, Mainly-air Mixtures,” J. Eng. Gas Turbines Power, 139(12), p. 122504) with similar testing condition but a different seal geometry (L/D = 0.65, D = 89.306 mm, and Cr = 0.188 mm) and (2) the predictions from a bulk-flow model developed by San Andrés (2012, “Rotordynamic Force Coefficients of Bubbly Mixture Annular Pressure Seals,” ASME J. Eng. Gas Turbines Power, 134(2), p. 022503). Results show a significant increase of direct dynamic stiffness KΩ as LVFi increases, especially at low PR. Test results reported by Zhang et al. (2017) has an opposite tendency of KΩ as an impact of increasing LVFi. Concerning cross-coupled dynamic stiffness kΩ and cross-coupled damping c, the results from Zhang et al. (2017) and the present results agree to the effects of changing speed, PR, and LVFi under pure- and mainly air conditions. As LVFi increases, direct damping C increases while test results reported by Zhang et al. (2017) showed no significant increase. Except for the direct dynamic stiffness and the impact of changing LVFi on the cross-coupled dynamic stiffness, the bulk-flow model of San Andrés (2012) predicts decently the tendencies and magnitudes of the rotordynamic coefficients.

High speed drive shafts are traditionally balanced using trim balance weights applied to the shaft ends. This paper considers the development and theoretical analysis of a novel and alternative strategy of balancing long flexible coupling shafts, whereby the trim balancing weights are applied by the means of a pair of ‘Balancing Sleeve’ arms that are integrally attached to each end of the coupling shaft. The trim balance weights are intended to apply a corrective centrifugal force to the coupling shaft in order to limit shaft end reaction forces. With increasing speed, the magnitude of the corrective force also increases due to the flexibility of the balance sleeve. This thereby counteracts the increased coupling shaft unbalance resulting from its own flexibility. Additionally, it is also found that the mechanism imparts a corrective bending moment to the coupling shaft ends, which has a tendency to limit deflection. The methodology is modelled as a rotating simply supported shaft with uniform eccentricity and allows application to the problem of drivetrain balancing of sub-15MW industrial gas turbines. Results show that reaction loads can theoretically be reduced from 10,000 N to approximately zero. The bending moment applied to the shaft is also shown to reduce shaft deflection theoretically to zero. In practical applications this will be unrealistic and achievable results show deflection theoretically reduced by half. Analysis of the balance sleeve feasibility is considered through use of a three-dimensional finite element model. Further to this paper, the aim is to develop a full dynamic model of both shaft and counterbalance sleeve, with verification coming from scaled, experimental test facilities.

Abstract The design and experimental activity presented in this paper is related to a novel hybrid seal which is intended to work as a balance piston seal in an AMBs levitated high-pressure (about 300 bar delivery pressure) motor-compressor. The typical solution adopted for balance piston application is a damper seal (e.g. honeycomb seal), as the rotordynamic stability is a primary focus. However, due to interactions between the AMB controller and seal high stiffness level, the aforementioned selection is not so straightforward. After a review of the state of the art it was found that a combination of some conventional geometries (e.g. labyrinth and honeycomb) can be adopted to achieve the desired target. The design was done using a novel tool combining the validated bulk flow codes for each geometry. Moreover, a CFD analysis, based on some literature references, was carried out as a final verification of the design. The experimental activity was then performed at the Authors’ internal seal test rig. As in typical rotordynamic seal testing activity, the operating parameters leveraged to explore performance sensitivity are rotational speed, inlet pressure, pressure ratio and inlet swirl level. The outcome was satisfactory both in terms of leakage and rotordynamic coefficients.

PHENIX, a prototype sodium-cooled fast reactor (SFR), has demonstrated a fast breeder reactor technology and also achieved its important role as an irradiation facility for innovative fuels and materials. In 2009 PHENIX reached its final shutdown and the CEA launched a PHENIX end-of-life (EOL) test program, which provided a unique opportunity to validate an SFR system analysis code. The Korea Atomic Energy Research Institute (KAERI) joined this program to evaluate the capability and limitation of the MARS-LMR code, which will be used as a basic tool for the design and analysis of future SFRs in Korea. For this purpose, pre-test analyses of PHENIX EOL natural circulation tests have been performed and one-dimensional thermal-hydraulic behaviors for these tests have been analyzed. The natural circulation test was initiated by the decrease of heat removal through steam generators (SGs). This resulted in the increase of intermediate heat exchanger (IHX) secondary inlet temperature, followed by a manual reactor scram and the decrease of secondary pump speed. After that, the primary flow rate was also controlled by the manual trip of three primary pumps. For the pre-test analysis the Phenix primary system and IHXs were nodalized into several volumes. Total 981 subassemblies in the core were modeled and they were divided into 7 flow channels. The active 4 IHXs were modeled independently to investigate the change of flow into each IHX. The cold pool was modeled by two axial nodes having 5 and 6 sub-volumes, respectively. The reactor vessel cooling system was modeled to match the flow balance in the primary system. The flow path of vessel cooling system was quite complicated. However, it is simplified in the modeling. For a MARS-LMR simulation, the dryout of SGs have been described by the use of the boundary conditions for IHTS as a form of time-to-temperature table. This boundary condition reflects the increase in IHTS temperature by SG dryout during the initial stage of the transient and the increase in heat removal by the opening of the two SG containments at 3 hours after the initiation of the transient. Through the comparison of the pre-analysis results with the prediction by other computer codes, it is found that the MARS-LMR code predicts natural circulation phenomena in a sodium system in a reasonable manner. The final analysis for validation of the code against the test data will be followed with an improved modeling in near future.

The present paper is aimed at the analysis of adaptation mechanisms of five species of the genus Acer L. in the culture of the botanical garden.With this view we studied the indices of the pigment complex (nitrogen balance - Nbi, flavonols - Flv and chlorophyll - Ch) in the assimilating organs of plants. It was revealed that the pigment composition of plant leaves indicates their relatively high physiological status. An increase in biochemical parameters (Nbi,Chl, Flv) was identified by the end of summer in comparison with the beginning of summer period, which testifies to the formation of the protective function of the plant in the pre-winter period. The following statistical methods were used for test results interpretation: Shapiro – Wilk tests, Mann – Whitney, Wilcoxon, Kruskal-Wallisand criteria.

Through ground reaction (foot) forceplate-based, center-of-pressure (COP) parameters, we aimed to investigate differences in standing balance for young, healthy individuals from both athlete (soccer) and non-athlete subject populations. We investigated five, COP displacement and velocity parameters derived from the COP position time series. Soccer athlete and non-athlete subjects performed standing balance for postural tasks of increasing difficulty levels, by varying visual cues (eyes-open/eyes-closed) and base of support (wide/tandem foot placement), leading to four test conditions: 1) wide/eyes-open, 2) wide/eyes-closed, 3) tandem/eyes-open, 4) tandem/eyes-closed. By investigating position and velocity characteristics of the COP position time series, we observed that the soccer athletes had generally lower COP displacement and velocity parameters (meaning they were more stable and perhaps better able to control their body sway) than the non-athletes. This study lends new insights as to how parameters derived from the COP position can be utilized to determine differences in balance between normal subject populations (e.g., athletes versus non-athletes).

Abstract For disposal of the research reactor of the Technical University Munich FRM II a new transport and storage cask design was under approval assessment by the German authorities on the basis of International Atomic Energy Agency (IAEA) requirements. The cask body is made of ductile cast iron and closed by two bolted lid systems with metal seals. The material of the lids is stainless steel. On each end of the cask the wood-filled impact limiters are installed to reduce impact loads to the cask under drop test conditions. In the cavity of the cask a basket for five spent fuel elements is arranged. This design has been assessed by the Bundesanstalt für Materialforschung und -prüfung (BAM) in view to the mechanical and thermal safety analyses, the activity release approaches, and subjects of quality assurance and surveillance for manufacturing and operation of the package. For the mechanical safety analyses of the package a combination of experimental testing and analytical/numerical calculations were applied. In total, four drop tests were carried out at the BAM large drop test facility. Two tests were carried out as a full IAEA drop test sequence consisting of a 9m drop test onto an unyielding target and a 1m puncture bar drop test. The other two drop tests were performed as single 9m drop tests and completed by additional analyses for considering the effects of an IAEA drop test sequence. The main objectives of the drop tests were the investigation of the integrity of the package and its safety against release of radioactive material as well as the test of the fastening system of the impact limiters. Furthermore, the acceleration and strain signals measured during the tests were used for the verification of finite-element (FE) models applied in the safety analysis of the package design. The FE models include the cask body, the lid system, the inventory and the impact limiters with the fastening system. In this context special attention was paid to the modeling of the encapsulated wood-filled impact limiters. Additional calculations by using the verified numerical model were done to investigate e.g. the brittle fracture of the cask body made of ductile cask iron within the package design approval procedure. The thermal safety assessment was based on analytical energy balance calculations and FE analyses. As an additional point of evaluation in frame of approval procedure, the effect of possible impact limiter burning under accident conditions of transport was considered by the applicant and assessed by BAM. This paper describes the package design assessment from the point of view of the competent authority BAM including the applied assessment strategy, the conducted drop tests and the additional calculations by using numerical and analytical methods.

Abstract Human’s motion and its mechanisms had become interesting in the last years, where the medecine’s field search for rehabilitation methods for handicapped persons. Other fields, like sport sciences, professional or military world, search to distinguish profiles and ways to train them with specific purposes. Besides, recent findings in neuroscience try to describe these mechanisms from an organic point of view. Until now, different researchs had given a model about control motor that describes how the union between the senses’s information allows adaptable movements. One of this sense is the proprioception, the sense which has a quite big factor in the orientation and position of the body, its members and joints. For this reason, research for new strategies to explore proprioception and improve the theories of human motion could be done by three different vias. At first, the sense is analysed in a case-study where three groups of persons are compared in a controlled enviroment with three experimental tasks. The subjects belong to each group by the kind of sport they do: sedentary, normal sportsmen (e.g. athletics, swimming) and martial sportmen (e.g. karate, judo). They are compared thinking about the following hypothesis: “Martial Sportmen have a better proprioception than of the other groups’s subjects: It could be due to the type of exercises they do in their sports as empirically, a contact sportsman shows significantly superior motor skills to the members of the other two groups. The second via are records from encephalogram (EEG) while the experimental tasks are doing. These records are analised a posteriori with a set of processing algorithms to extract characteristics about brain’s activity of the proprioception and motion control. Finally , the study tries to integrate graphic tools to make easy to understand final scientific results which allow us to explore the brain activity of the subjects through easy interfaces (e.g. space-time events, activity intensity, connectivity, specific neural netwoks or anormal activity). In the future, this application could be a complement to assist doctors, researchers, sports center specialists and anyone who must improve the health and movements of handicapped persons. Keywords: proprioception, EEG, assesment, rehabilitation.References: Röijezon, U., Clark, N.C., Treleaven, J. (2015). Proprioception in musculoskeletal rehabilitation. Part 1: Basic science and principles of assessment and clinical interventions. ManualTher.10.1016/j.math.2015.01.008. Röijezon, U., Clark, N.C., Treleaven, J. (2015). Proprioception in musculoskeletal rehabilitation. Part 2: Clinical assessment and intervention. Manual Ther.10.1016/j.math.2015.01.009. 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The large quantities of measurement information gathered throughout a plant process make the closing of the mass and energy balance nearly impossible without the help of additional tools. For this reason, a variety of plant monitoring tools for closing plant balances was developed. A major problem with the current tools lies in the non-consideration of redundant measurements which are available throughout the entire plant process. The online monitoring reconciliation system is based on the process data reconciliation according to VDI 2048 standard and is using all redundant measurements within the process to close mass and energy balances. As a result, the most realistic process with the lowest uncertainty can be monitored. This system is installed in more than 35 NPPs worldwide and is used ○ as a basis for correction of feed water mass flow and feed water temperature measurements (recover of lost Megawatts). ○ as a basis for correction of Taverage (Tav) (recover of steam generator outlet pressure in PWRs). ○ for maintaining the thermal core power and the feed water mass flow under continuous operation conditions. ○ for automatic detection of erroneous measurements and measurement drift. ○ for detection of inner leakages, non-condensable gases and system losses. ○ for calculating non measured values (e.g. heat transfer coefficients, ΔT, preheater loads,…). ○ as a monitoring system for the main thermodynamic process. ○ for verifying warranty tests more accurate. ○ as a application of condition-based maintenance and component monitoring. ○ for What-if scenarios (simulation, not PDR) This paper describes the methodology according to VDI 2048 (use of Gaussian correction principle and quality criterias). The benefits gained from the use of the online monitoring system are demonstrated.

Abstract Proprioceptive afferents from the ankle joint are essential feedback for maintaining balance. However, there is no widely accepted test or measurement system available for determining the proprioceptive accuracy of the human ankle joint. Here, we present a system with a novel hardware design that applies an established psychometric testing protocol that generates a Just-Noticeable-Difference (JND) threshold as a measure of ankle proprioceptive acuity at the end of testing. To establish the system validity, twelve healthy adult participants completed the assessment. Testing required 25 trials and took approximately 10 minutes to complete. We show exemplar data of the ankle JND threshold and the summary results for all twelve participants. This assessment has the potential to become a tool for clinicians to identify proprioceptive impairment at the ankle and to assess the efficacy of sensorimotor interventions for improving balance in clinical populations.

The main objectives of this project were to review the available balanced-mix design (BMD) methodologies, understand the I-FIT and Hamburg Wheel Tracking Test (HWTT) test methods using INDOT asphalt mixtures, and to explore the application of these tests to both a BMD approach and as performance-related Quality Control (QC) and Quality Acceptance (QA) methods. Two QA mixture specimen types, plant-mixed laboratory-compacted (PMLC) and plant-mixed field-compacted (PMFC) were used in the determination of cracking and rutting parameters. Distribution functions for the flexibility index (FI) values and rutting parameters were determined for various mixture types. The effects of specimen geometry and air voids contents on the calculated Flexibility Index (FI) and rutting parameters were investigated. The fatigue characteristics of selected asphalt mixtures were determined using the S-VECD test according to different FI levels for different conditions. A typical full-depth pavement section was implemented in FlexPAVE to explore the cracking characteristics of INDOT asphalt mixtures by investigating the relationship between the FI values of QA samples with the FlexPAVE pavement performance predictions. The FI values obtained from PMFC specimens were consistently higher than their corresponding PMLC specimens. This study also found that FI values were affected significantly by variations in specimen thickness and air voids contents, having higher FI values with higher air voids contents and thinner specimens. These observations do not agree with the general material-performance expectations that better cracking resistance is achieved with lower air voids content and thicker layers. Additionally, PG 70-22 mixtures show the lowest mean FI values followed by the PG 76-22 and 64-22 mixtures. The same order was observed from the ΔTc (asphalt binder cracking index) of INDOT’s 2017 and 2018 projects. Finally, it was found that the HWTT showed reasonable sensitivity to the different characteristics (e.g., aggregate sizes, binder types, and air voids contents) of asphalt mixtures. Mixtures containing modified asphalt binders showed better rut resistance and higher Rutting Resistance Index (RRI) than those containing unmodified binders.

As automated road vehicles begin their deployment into public traffic, and they will need to interact with human driven vehicles, pedestrians, bicyclists, etc. This requires some form of communication between those automated vehicles (AVs) and other road users. Some of these communication modes (e.g., auditory, motion) were discussed in “Unsettled Issues Regarding Communication of Automated Vehicles with Other Road Users.” Unsettled Issues Regarding Visual Communication Between Automated Vehicles and Other Road Users focuses on sisual communication and its balance of reach, clarity, and intuitiveness. This report discusses the different modes of visual communication (such a simple lights and rich text) and how they can be used for communication between AVs and other road users. A particular emphasis is put on standardization to highlight how uniformity and mass adoption increases efficacy of communications means.