Identification of models using failure rate and mean residual life of doubly truncated random variables

In this paper, we study the relationship between the failure rate and the mean residual life of doubly truncated random variables. Accordingly, we develop characterizations for exponential, Pareto 11 and beta distributions. Further, we generalize the identities for fire Pearson and the exponential family of distributions given respectively in Nair and Sankaran (1991) and Consul (1995). Applications of these measures in file context of lengthbiased models are also explored

Dominant Mean Percentage Score Factors Of The Consumer Purchase Behaviour Of Passenger Cars

Globalization and liberalization, with the entry of many prominent foreign manufacturers, changed the automobile scenario in India, since early 1990’s. World Leaders in automobile manufacturing such as Ford, General Motors, Honda, Toyota, Suzuki, Hyundai, Renault, Mitsubishi, Benz, BMW, Volkswagen and Nissan set up their manufacturing units in India in joint venture with their Indian counterpart companies, by making use of the Foreign Direct Investment policy of the Government of India, These manufacturers started capturing the hearts of Indian car customers with their choice of technological and innovative product features, with quality and reliability. With the multiplicity of choices available to the Indian passenger car buyers, it drastically changed the way the car purchase scenario in India and particularly in the State of Kerala. This transformed the automobile scene from a sellers’ market to buyers’ market. Car customers started developing their own personal preferences and purchasing patterns, which were hitherto unknown in the Indian automobile segment. The main purpose of this paper is to come up with the identification of possible parameters and a framework development, that influence the consumer purchase behaviour patterns of passenger car owners in the State of Kerala, so that further research could be done, based on the framework and the identified parameters.

ECG Noise Removal using GA tuned Sign-Data Least Mean Square Algorithm

Adaptive filter is a primary method to filter Electrocardiogram (ECG), because it does not need the signal statistical characteristics. In this paper, an adaptive filtering technique for denoising the ECG based on Genetic Algorithm (GA) tuned Sign-Data Least Mean Square (SD-LMS) algorithm is proposed. This technique minimizes the mean-squared error between the primary input, which is a noisy ECG, and a reference input which can be either noise that is correlated in some way with the noise in the primary input or a signal that is correlated only with ECG in the primary input. Noise is used as the reference signal in this work. The algorithm was applied to the records from the MIT -BIH Arrhythmia database for removing the baseline wander and 60Hz power line interference. The proposed algorithm gave an average signal to noise ratio improvement of 10.75 dB for baseline wander and 24.26 dB for power line interference which is better than the previous reported works

Emotional Intelligence As A Determinant Of Conflict Style Adoption Of Managers: A Theoretical Perspective

Successful management is dependent heavily on the manager’s ability to handle conflict effectively. The workforce has been increasingly becoming diversified vis-à-vis the gender, culture and ethnicity. The present work environment has in itself contributed to sowing seeds of conflict with greater diversity, hostility, complexity and newer business competencies in the work context.The classic study of Mintzberg’s Managerial roles approach (1973) also says that a manager has to spend sufficient time and energy in solving conflict as he has to take roles as a negotiator, and dispute handler. An understanding of the conflict and role that it plays in influencing employee behavior constructively or destructively is immense. Therefore conflict when left unmanaged can lead to diminished cohesiveness amongst employees, productivity and reduced organizational fitness. To manage conflict effective conflict resolution strategies that have constructive outcomes is called for. Conflict resolution style theorists opine that collaborative or integrative style, where there is high concern for task and people is considered to give positive individual and organizational outcomes, while the withdrawing /avoidance style and forcing / dominating style are considered to be ineffective in managing conflict. Though managers have typical preferences in the styles followed it need not necessarily be the typical response as it depends on the context, power relationships, emotions etc. The adoption of conflict styles of managers however is dependent on variables like gender orientation, cultural values, personality orientation, underlying relationships – public/private. The paper attempts to draw the importance of managing conflicts at workplace positively and the need for effective conflict resolution strategies. The conflict style adopted and the variables that affect the adoption of each style are discussed and possible interventions at the workplace are suggested

Kriging coordinates: what does that mean?

Kriging is an interpolation technique whose optimality criteria are based on normality assumptions either for observed or for transformed data. This is the case of normal, lognormal and multigaussian kriging. When kriging is applied to transformed scores, optimality of obtained estimators becomes a cumbersome concept: back-transformed optimal interpolations in transformed scores are not optimal in the original sample space, and vice-versa. This lack of compatible criteria of optimality induces a variety of problems in both point and block estimates. For instance, lognormal kriging, widely used to interpolate positive variables, has no straightforward way to build consistent and optimal confidence intervals for estimates. These problems are ultimately linked to the assumed space structure of the data support: for instance, positive values, when modelled with lognormal distributions, are assumed to be embedded in the whole real space, with the usual real space structure and Lebesgue measure

When zero doesn't mean it and other geomathematical mischief

There is almost not a case in exploration geology, where the studied data doesn’t includes below detection limits and/or zero values, and since most of the geological data responds to lognormal distributions, these “zero data” represent a mathematical challenge for the interpretation. We need to start by recognizing that there are zero values in geology. For example the amount of quartz in a foyaite (nepheline syenite) is zero, since quartz cannot co-exists with nepheline. Another common essential zero is a North azimuth, however we can always change that zero for the value of 360°. These are known as “Essential zeros”, but what can we do with “Rounded zeros” that are the result of below the detection limit of the equipment? Amalgamation, e.g. adding Na2O and K2O, as total alkalis is a solution, but sometimes we need to differentiate between a sodic and a potassic alteration. Pre-classification into groups requires a good knowledge of the distribution of the data and the geochemical characteristics of the groups which is not always available. Considering the zero values equal to the limit of detection of the used equipment will generate spurious distributions, especially in ternary diagrams. Same situation will occur if we replace the zero values by a small amount using non-parametric or parametric techniques (imputation). The method that we are proposing takes into consideration the well known relationships between some elements. For example, in copper porphyry deposits, there is always a good direct correlation between the copper values and the molybdenum ones, but while copper will always be above the limit of detection, many of the molybdenum values will be “rounded zeros”. So, we will take the lower quartile of the real molybdenum values and establish a regression equation with copper, and then we will estimate the “rounded” zero values of molybdenum by their corresponding copper values. The method could be applied to any type of data, provided we establish first their correlation dependency. One of the main advantages of this method is that we do not obtain a fixed value for the “rounded zeros”, but one that depends on the value of the other variable. Key words: compositional data analysis, treatment of zeros, essential zeros, rounded zeros, correlation dependency

Sangre de mártires, semilla de esperanza: construcción de las nociones de cuerpo y memoria tras la masacre de Trujillo

En esta investigación se pretende analizar la forma en que los familiares de víctimas de Trujillo y sus acompañantes han iniciado y desarrollado los procesos de reconstrucción de los hechos, de reparación simbólica y de duelo en un escenario donde el conflicto aún no ha cesado. Tras la masacre ocurrida entre 1986 y 1994 en Trujillo, Riofrío, Bolívar (Valle del Cauca) y el reconocimiento de responsabilidad por parte del Estado en 1995, los familiares de las víctimas decidieron unir fuerzas y trabajar conjuntamente en la construcción de una memoria histórica de los hechos violentos, pese a las amenazas y al hostigamiento que después de 20 años siguen latentes en Trujillo. Ahora bien, no sólo se quiere hablar de los procesos de memoria y duelo entre los trujillenses; también se quieren mostrar una perspectiva analítica que permite mostrarlos más allá del relato o los rituales; es decir desde el cuerpo como evidencia material de los hechos violentos y como construcción simbólica, desde los objetos como albergue de recuerdos e identidades particulares y desde el arte como medio de liberar el dolor, acercarse a la violencia y evadir por un instante la cruenta realidad que vela la vida de los trujillenses.

Foreign perception of sovereign risk : an event study of the colombian armed conflict

Este paper estudia la relación entre algunos de los eventos más importantes del conflicto colombiano con la percepción extranjera de riesgo soberano, medido por los Credit Default Swaps (CDS) de los bonos del Gobierno Colombiano. Usando dos metodologías relativamente recientes, yo estimo el efecto causal de los eventos de conflicto ampliamente cubierto por los medios internacionales. En primer lugar construyo un grupo de control sintético que funciona como contra factual de la serie real de los CDS colombianos pero en ausencia de eventos de conflicto. Segundo, estimo el efecto acumulado del evento bajo la metodología de retornos anormales acumulados. Los resultados sugieren que los efectos de los eventos de conflicto sobre la percepción extranjera de riesgo soberano dependen de las especificaciones de cada evento.

Is There or Is There Not an Armed Conflict in Colombia?

The Colombian government thinks that accepting that there is an internal armed conflict in the country implies recognizing international personality o the groups in arms against the legitimate government. This article intends to demonstrate that this is not true and that, being terrorist groups, cannot be recognised as belligerents.

Land Restitution and Prevention of Forced Displacement in Colombia

The armed conflict in Colombia, which has generated over three million internally displaced persons, has dramatic humanitarian consequences and raises serious issues regarding the protection of displaced peoples’ rights. The underlying reasons for the displacement often lie in the dynamics associated with territorial control and land seizures undertaken for strategic, military or purely economic purposes. Domestic and international legal provisions have established the victims’ right to the restitution of their homes and property as the “preferred remedy” in cases of displacement. However, policies dealing with displacement, both those of the Colombian government and of several international institutions, fail to take this sufficiently into account. A comprehensive reparation policy for victims must necessarily entail the reversion of lands, territories and goods seized in Colombia under the pretext of the internal armed conflict.

Forst, Rainer. Toleration in conflict: past and present. New York: Cambridge University Press; 2013, 635 p.

Reseña del libro

Sexual Violence Against Women as a Strategy to Dispossess Land in the Colombian Armed Conflict

This article reviews the evidence collected by diverse national and international organizations regarding the relationship between sexual violence against women, forced displacement, and dispossession in the context of the Colombian armed conflict. To this end, it uses the concept of “sexual violence regimes” to highlight that the endspursued by sexual violence are not always exhausted by simple consummation (that is, the act of sexual violence itself), but depending on the context, can be connected with broader strategic goals of armed actors. At the same time, this document admits the difficulty of proving this relationship with respect to judicial procedures, and thus sets out the possibility of creating a rebuttable presumption, in the framework of “unconstitutional state of affairs” created by judgment T-025 of 2004, that alleviates the burden of proof of the victims, and serves as a catalyst to promote new genderbased mechanisms of reparations.

Work-family conflict, burnout and work engagement among teachers: The moderating effect of job and personal resources

The present study contributes to the literature on the Job Demands-resources model in the italian school context. the aim of this paper is to examine how the interaction between work-family conflict (i.e., a typical job demand) and opportunities to learn and to develop and self-efficacy (i.e., typical job and personal resources, respectively) affect the core dimensions of burnout (exhaustion and depersonalization) and work engagement (vigor and dedication). Hypotheses were tested with a cross-sectional design among 143 teachers of a junior high school in the north of Italy. Results of moderated multiple regression analysis partially supported the hypotheses as the opportunities to learn and to develop buffered against the aversive effects of work-family conflict on depersonalization, whereas self-efficacy moderated the relationship between work-family conflict and vigor. From a practical viewpoint, our findings suggest that opportunities to learn and to develop and self-efficacy are important re- sources that help teachers to reduce the negative effects related to work-family conflict.

Armed conflict and paramilitary groups in Chiapas

The armed conflict in Chiapas began in 1994 after the armed uprising of the Zapatista Army of National Liberation (EZLN). Until now the Mexican government do not recognize the existence of an armed conflict there, for what they call inter-ethnic violence that happens in different municipalities in Chiapas. This study aims at demonstrating that, first, the Mexican state of Chiapas has an armed conflict since the mid-nineties, which has intensified and transformed over sixteen years. It is in this transformation that have emerged paramilitary groups seeking to destabilize the state, generating dynamics of appropriation and control of territory through different practices such as forced displacements, selective assassinations and terror spread within populations who are the targets of their attacks (mainly community support of the Zapatista Army of National Liberation). This work studied the "Peace and Justice" paramilitary group operating in different parts of the state of Chiapas, mainly in the Northern Zone. This case-study will look at the changes it has undergone Mexican democracy, which will be analyzed at two points: first, the failure of federal and Chiapas state to allow or endorse the creation of paramilitary groups and not to punish their actions; on the other, the consequences of the actions of such actors in democratic institutions, and democracy itself. Will seek to demonstrate that indeed both the permissiveness of the Mexican state and its complicity has weakened democracy in Mexico, since they are not able to manage conflict so that they do not degenerate into violence.

The Construction of a State Peace Policy and the Process of Conflict Resolution

The academic literature specialized on processes of conflict resolution has focused on how third party intervention and mediation can contribute to end violent conflict, however it has also ignored the potential role of the state in countries affected by internal war. This article calls for a better understanding of the state, not only as a source of contemporary conflict but as a potential advocate of conflict resolution processes. It suggests that it is necessary and possible to involve the state in more effective processes of conflict resolution through the implementation of a State Peace Policy. The central argument is that some of the critical elements that should guide the state action when confronting the destructive logic of war and violence can be effectively undertaken through a public policy focused on building peace. After suggesting a general definition of State Peace Policy and highlighting some of its main attributes, the article recognizes that this sort of policy can also orientate the unfinished process of state consolidation in Colombia and other countries affected by internal conflict. The role of the state in the process of conflict resolution is crucial; however there are some issues normally ignored within the policy-making process, they must be seriously taken into account in order to eliminate the underlying structures that perpetuate conflict and delay the consolidation of sustainable peace.-----La literatura académica especializada en procesos de resolución de conflictos se ha centrado en el estudio de cómo la intervención de terceras partes y la labor de mediación pueden contribuir a poner fin a los conflictos violentos, sin embargo, también ha ignorado el rol potencial del estado en aquellos países afectados por la guerra interna. Este artículo llama la atención sobre la necesidad de estudiar al estado no sólo como la fuente de los conflictos contemporáneos, sino como un colaborador potencial en procesos de resolución de conflictos. Se sugiere que es necesario y también posible involucrar al estado en este tipo de procesos de una manera más efectiva a través de la implementación de una Política de Estado centrada en la Paz. El argumento central es que algunos de los elementos claves que deben guiar la acción del estado cuando éste se enfrenta a la lógica destructiva de la guerra y la violencia, pueden ser efectivamente tratados a través de una política pública que de prioridad a la construcción de la paz. Luego de sugerir una definición general y destacar algunos de los principales atributos de ésta clase de Política de Estado, el artículo reconoce que ésta podría también orientar el proceso inacabado de consolidación del estado en Colombia y en otros países afectados por conflictos internos. El rol del estado en el proceso para resolver los conflictos es crucial, sin embargo hay algunos aspectos normalmente ignorados durante el proceso de formulación de políticas que deben ser tomados en cuenta seriamente para eliminar las estructuras que perpetúan el conflicto y que retrasan la consolidación de la paz sostenible.