A system dynamics approach to model heat stress accumulation in dairy cows during a heatwave event.

Climate change is expected to increase the number of heat wave events, leading to prolonged exposures to severe heat stress (HS) and the corresponding adverse effects on dairy cattle productivity. Modelling dairy cattle productivity under HS conditions is complicated because it requires comprehending the complexity, non-linearity, dynamicity, and delays in animal response. In this paper, we applied the System Dynamics methodology to understand the dynamics of animal response and system delays of observed milk yield (MY) in dairy cows under HS. Data on MY and temperature-humidity index were collected from a dairy cattle farm. Model development involved: (i) articulation of the problem, identification of the feedback mechanisms, and development of the dynamic hypothesis through a causal loop diagram; (ii) formulation of the quantitative model through a stock-and-flow structure; (iii) calibration of the model parameters; and (iv) analysis of results for individual cows. The model was successively evaluated with 20 cows in the case study farm, and the relevant parameters of their HS response were quantified with calibration. According to the evaluation of the results, the proposed model structure was able to capture the effect of HS for 11 cows with high accuracy with mean absolute percent error <5%, concordance correlation coefficient >0.6, and R2 > 0.6, except for two cows (ID #13 and #20) with R2 less than 0.6, implying that the rest of the nine animals do not exhibit heat-sensitive behaviour for the defined parameter space. The presented HS model considered non-linear feedback mechanisms as an attempt to help farmers and decision makers quantify the animal response to HS, predict MY under HS conditions, and distinguish the heat-sensitive cows from heat-tolerant cows at the farm level.

Against the Disembraining Machine. What is Psychoanalysis (Still) Capable of?

With the intensification of the practices of social networks and the phobia of the internal world, operationalist thinking ends up presenting itself as a (false) universal and automatic response to the human need for meaning and sharing. What can psychoanalysis do in the face of such a hypothesis? What concepts does it have at its disposal to think about the psychic impoverishment and hatred that seem to crystallize the pain of thinking that characterizes our times?

Narrativas de pacientes con síndrome de intestino irritable: análisis de casos / Narratives of patients with irritable bowel syndrome: analysis of cases

Irritable bowel syndrome (IBS) is a psychosomatic disease whose prevalence has increased considerably in recent years. IBS tends to present comorbidity with other psychopathological conditions such as anxiety, phobias, hypochondria and depression, which makes the medical and psychotherapeutic treatment more complex. There is little empirical evidence on psychotherapeutic treatments to help patients cope with these symptoms. The purpose if this study is to describe the narratives of patients with IBS and explore the role that these narratives play in the establishment and persistence of the disease. Two female IBS-patients were selected and an in depth interview was conducted. The dialogue was transcribed and data were analyzed using the biographical approach. The results show that patients have high levels of alexithymia, operational thinking and difficulties in emotional expression; confirming the main features of psychosomatic personality. It is proposed to define specific psychotherapeutic approaches for each patient according to their personality inferred through their narratives, rather than a unified approved technique for all patients with this disease...

El síndrome de intestino irritable (SII) es una enfermedad psicosomática cuya prevalencia ha aumentado considerablemente en los últimos años. Tiende a presentar comorbilidad con otros cuadros psicopatológicos como la ansiedad, fobias, hipocondría y depresión, lo cual otorga mayor complejidad al tratamiento médico y psicoterapéutico. Existe escasa evidencia empírica sobre tratamientos psicoterapéuticos que ayuden a estos pacientes a lidiar con la sintomatología. El presente trabajo tuvo por objetivo describir las narrativas de pacientes que padecen SII y explorar el rol que cumplen estas narrativas en la constitución y mantenimiento de la enfermedad. Se seleccionaron dos pacientes de sexo femenino con diagnóstico médico de SII y se realizó una entrevista en profundidad. El diálogo fue transcrito a texto y los datos fueron analizados desde el enfoque biográfico. Los resultados muestran que las pacientes padecen altos niveles de alexitimia, pensamiento operatorio y dificultades en la expresión emocional; confirmando las principales características de la personalidad psicosomática. Se propone definir abordajes psicoterapéutico específicos a cada paciente de acuerdo a su personalidad inferida a través de sus narrativas, más que una técnica homologada unificada para todos los pacientes que padecen esta enfermedad...

Quando o corpo irrompe na análise: tratamento por tempo indeterminado / When the body erupts during analysis: Treatment for undetermined time / Cuando el cuerpo irrumpe en el análisis: tratamiento por tempo indeterminado

O autor faz uma reflexão que se situa em torno da articulação somato-psíquica, baseada nas publicações teóricas oriundas de colegas psicanalistas franceses do Instituto de Psicossomática de Paris. (IPSO) e da Sociedade de Psicanálise de Paris (SPP). A partir do relato de vinhetas clínicas acerca de um paciente visto pelo autor no IPSO, podemos observar detalhes da clínica dos pacientes psicossomáticos assim como as diferentes técnicas empregadas na cura desses pacientes.

The author poses a reflection around the psychosomatic articulation, based on the academic publications of French psychoanalyst colleagues from the Paris Institute of Psychosomatics (IPSO) and the Paris Psychoanalytic Society (SPP). From the report of clinical vignettes on a patient seen by the author at the IPSO, it is possible to observe details of the treatment of psychosomatic patients, as well as the different techniques employed in the cure of these patients.

El autor hace una reflexión en torno de la articulación somato-psíquica, basada en las publicaciones teóricas oriundas de colegas psicoanalistas franceses del Instituto de Psicosomática de París (IPSO) y de la Sociedad de Psicoanálisis de París (SPP). A partir del relato de viñetas clínicas sobre un paciente visto por el autor en el IPSO, podemos observar detalles de la clínica de los pacientes psicosomáticos así como también las diferentes técnicas empleadas en la cura de estos pacientes.