Idiopathic Megacolon-Short Review

Introduction: Idiopathic megacolon (IM) is a rare condition with a more or less known etiology, which involves management challenges, especially therapeutic, and both gastroenterology and surgery services. With insufficiently drawn out protocols, but with occasionally formidable complications, the condition management can be difficult for any general surgery team, either as a failure of drug therapy (in the context of a known case, initially managed by a gastroenterologist) or as a surgical emergency (in which the diagnostic surprise leads additional difficulties to the tactical decision), when the speed imposed by the severity of the case can lead to inadequate strategies, with possibly critical consequences. Method: With such a motivation, and having available experience limited by the small number of cases (described by all medical teams concerned with this pathology), the revision of the literature with the update of management landmarks from the surgical perspective of the pathology appears as justified by this article. Results: If the diagnosis of megacolon is made relatively easily by imaging the colorectal dilation (which is associated with initial and/or consecutive clinical aspects), the establishing of the diagnosis of idiopathic megacolon is based in practice almost exclusively on a principle of exclusion, and after evaluating the absence of some known causes that can lead to the occurrence of these anatomic and clinical changes, mimetically, clinically, and paraclinically, with IM (intramural aganglionosis, distal obstructions, intoxications, etc.). If the etiopathogenic theories, based on an increase in the performance of the arsenal of investigations of the disease, have registered a continuous improvement and an increase of objectivity, unfortunately, the curative surgical treatment options still revolve around the same resection techniques. Moreover, the possibility of developing a form of etiopathogenic treatment seems as remote as ever.

Opposition Relationship in Handball and the Constant Reversibility of Attack and Defense

In opposition to the principles of traditional pedagogy which values the acquisition of gestural models through a technical approach, this article develops a theory of intervention based on the opposition between two teams, involving a logic of tactical decision-making and a succession of relevant tactical choices in attack and defense. By focusing on the fluctuations in the links between attack and defense, it thus presents a system of the main actions in handball, that is to say in this case a set of principles closely dependent on each other, constituting a whole of deep logical unity. With its functional character, this approach is based on a modeling of game play where the opposing relationships are characterizable. It is thus possible to reduce all game play situations to a few categories with stable characteristics. Keywords: handball, tactical decision, matrix of play, understanding, student-centered approach

Implementation of Tactical Decision Aids Based on Event Knowledge Graph

This paper proposes a new tactical decision aids method based on event knowledge graph (EventKG). In the warfare domain, EventKG can be constructed through event types design, event network construction and transition probability computation between events. Initially, four event classes are introduced in accordance with the OODA loop, and eighteen subclasses are further decomposed. With the aids of a common event template, all the events taking place in the battle field can be described. Event networks are built by adopting the hierarchical task network (HTN) and described through Bayesian network, to exhibit various relations between battle events. Transition probability, namely the occurrence probability of next possible event, is computed by using the prior probability and conditional probability of event occurring. On the basis of structured EventKG, entity knowledge graph (EKG) and entity relation knowledge graph (ERKG), tactical decision aid instructions can be generated by combining with the battlefield situation information.

Older or Wiser? Age and Experience Trends in 20 Years of Olympic and World Swimming Championships Open Water 10-km Races

The aims of the present research were to estimate the age of peak performance (APP) and to examine the role of previous experience at the world-level open water race performances. Finishing positions and age of swimmers (639 females and 738 males) in the 10-km events of World Championship (WCH) and Olympic Games (OG) from 2000 to 2019 were obtained from the official results websites. Years of previous experience were computed using the number of previous participations in WCH or OG. APP was estimated using quadratic models of the 10th percentile top race positions and resulted in 28.94 years old for males (R2 = 0.551) and 27.40 years old for females (R2 = 0.613). Regression analysis revealed an improvement of 1.36 or 8.19 finishing positions for each additional year of age or experience, respectively (R2 = 0.157). However, significant differences (p < 0.001) between age and experience showed that the swimmer’s age became less relevant for performance as years of experience increased. These results, in terms of age, are in line with other mass-start disciplines of similar duration (≈2 h) and, in terms of experience, confirm the importance of previous participation in improving tactical decision making during open water races.

Tactics and Technology of Non-Verbal Investigative Actions Production in Computer Crimes Cases: Theory and Practice

The paper considers the doctrine of information and computer forensic support of investigative and judicial actions tactics, which is part of the system of the private theory of information and computer support of forensic activity. The subject of the teaching is the laws of gathering, scrutinizing and applying computer information in the production of investigative and judicial actions. The objects are the tactics and technology of investigative and judicial actions. Based on the theoretical aspects of the teaching, the authors have developed the tactics and technology of non-verbal investigative actions in cases of computer crimes. Among these are inspection of the scene of the crime, search, seizure, investigative experiment, given the choice of tactical impact and making a tactical decision depending on the specifics of investigative situations in the conditions of tactical risk associated with possible counteraction to the investigation. The tactical and technological support for the production of the above-mentioned non-verbal investigative actions is developed taking into account the features of digital traces, which are characterized by a high speed of transformation, are easily destroyed and modified, can be represented by an almost infinite number of copies, are characterized by the impossibility of perception directly by the senses, but only with the use of special devices and programs for detection, fixation and preservation, are confirmed by control numbers (hash sums) or other data indicating their integrity. The basic principles of working with digital traces in the production of non-verbal investigative actions are determined. They are the preservation of digital traces unchanged at all stages of working with them; full reflection of all manipulations in the protocols of investigative actions; the exceptional importance of preparatory measures, including the selection of a specialist and the determination of his competence, the availability of the necessary equipment and software for working with digital traces. For each of the above-mentioned investigative actions in the investigation of computer crimes, tactical techniques and technological support for the most effective obtaining of criminally significant evidentiary and investigative information have been developed.

Accelerating the tactical decision process with High-Performance Computing (HPC) on the edge : motivation, framework, and use cases

Managing the ever-growing volume and velocity of data across the battlefield is a critical problem for warfighters. Solving this problem will require a fundamental change in how battlefield analyses are performed. A new approach to making decisions on the battlefield will eliminate data transport delays by moving the analytical capabilities closer to data sources. Decision cycles depend on the speed at which data can be captured and converted to actionable information for decision making. Real-time situational awareness is achieved by locating computational assets at the tactical edge. Accelerating the tactical decision process leverages capabilities in three technology areas: (1) High-Performance Computing (HPC), (2) Machine Learning (ML), and (3) Internet of Things (IoT). Exploiting these areas can reduce network traffic and shorten the time required to transform data into actionable information. Faster decision cycles may revolutionize battlefield operations. Presented is an overview of an artificial intelligence (AI) system design for near-real-time analytics in a tactical operational environment executing on co-located, mobile HPC hardware. The report contains the following sections, (1) an introduction describing motivation, background, and state of technology, (2) descriptions of tactical decision process leveraging HPC problem definition and use case, and (3) HPC tactical data analytics framework design enabling data to decisions.

Análise observacional das ações dos guarda-redes de futebol jovem

El portero tiene un papel importante en el proceso ofensivo y defensivo de un equipo de fútbol. El objetivo del estudio era analizar las acciones ofensivas y defensivas de los GR U-17 del fútbol, utilizando la metodología observacional. GR Sub-17 (n=4) fue analizado en Se analizaron treinta partidos del campeonato del distrito de AF Lisboa. La muestra observacional consistió en 286 acciones defensivas y 790 acciones ofensivas. Utilizamos los sistemas de observación de las acciones técnico-tácticas ofensivas y defensivas de los porteros. Las acciones observadas fueron codificadas utilizando el programa informático LINCE versión 1.3. El procesamiento de datos se realizó a través de análisis descriptivos, de la prueba U-Mann Whitney para comparar las acciones en la condición de local y visitante y estadísticas gráficas. Verificamos en las acciones defensivas un mayor número de ocurrencias en forma de intervención fuera de gol (n=140; 4.66±2.57), acción como la última defensa (n=102; 3.4±2.34), forma de ejecución técnica con ambas manos (n= 205; 6,83±3,32) y zona final de la acción técnica 1 (n=155; 5,16±3,19). En las acciones ofensivas registramos más ocurrencias para la forma en que la pelota llegó al portero a través del retardo (n=263; 8.76±3.89), inicio de la acción en la zona 1(n=205; 13,30±4,72), patada de objetivo corto de acción técnica (n=191; 6,36±3,99), ataque posicional de decisión táctica (n=498; 16.60±5.87), fin de la acción de mantenimiento de la posesión (n=593; 19,76±5,81) y zona final de la acción 5 (n=131; 4,36±3,47). En el proceso defensivo, la acción del portero tiene una enorme preponderancia como la última defensa y defensa de la portería. En el proceso ofensivo, las acciones técnicas con los pies son relevantes en la participación en la construcción del ataque posicional. La acción de los porteros está influenciada por la condición del visitante. The goalkeeper (GK) has a major role in the offensive and defensive process of a soccer team. The aim of the study focused on the analysis of the offensive and defensive actions of the U-17 soccer GK, using observational methodology. U-17 GK (n=4) was analyzed in thirty Lisbon FA U-17 championship games. The observational sample consisted of 286 defensive actions and 790 offensive actions. We used the observational systems of the offensive and defensive technical-tactical GK’ actions. The actions observed were codified using the LINCE version 1.3 computer program. Data processing was performed through descriptive analysis, of the U-Mann Whitney test to compare actions in home and away condition and graphical statistics. We verified in the defensive actions a higher number of occurrences in the intervention form come off from goal (n=140; 4.66±2.57), action as last defender (n=102; 3.4±2,34), technical execution form with two hands (n= 205; 6.83±3.32) and final zone of technical action 1 (n=155; 5.16±3,19). In the offensive actions we recorded more occurrences for ball arrives the GK through back pass (n=263; 8.76±3.89), start of the action in zone 1 (n=205; 13.30±4.72), technical action short goal kick (n=191; 6.36±3.99), tactical decision positional attack (n=498; 16.60±5.87), final action maintenance of ball possession (n=593; 19.76±5.81) and final zone of action 5 (n=131; 4.36±3.47). In the defensive process, the action of the GKs has enormous preponderance in the action as the last defense and goal defense. In the offensive process, technical actions with the feet are relevant in the positional attack construction participation. The GK’ action is influenced by the condition of home game or visitor. O guarda-redes (GR) tem uma ação preponderante no processo ofensivo e defensivo de uma equipa de futebol. O objetivo do estudo centrou-se na análise das ações ofensivas e defensivas do GR sub-17 de futebol, recorrendo à metodologia observacional. Foram analisados GR Sub-17 (n=4) em 30 jogos do campeonato distrital da AF Lisboa. A amostra observacional foi de 286 ações defensivas e 790 ações ofensivas. Utilizámos os sistemas de observação das ações técnico-táticas ofensivas e defensivas dos GR. As ações observadas foram codificadas recorrendo ao software informático LINCE versão 1.3. O tratamento de dados foi realizado através da análise descritiva, do teste U-Mann Whitney para comparar as ações na condição de casa e fora e estatística gráfica. Verificámos nas ações defensivas maior número de ocorrências na forma de intervenção saída da baliza (n=140; 4.66±2.57), ação como último defesa (n=102; 3.4±2.34), forma de execução técnica com as duas mãos (n= 205; 6.83±3.32) e zona final da ação técnica 1 (n=155; 5.16±3.19). Nas ações ofensivas registámos mais ocorrências para forma de chegada da bola ao GR através de atraso (n=263; 8.76±3.89), início da ação na zona 1 (n=205; 13.30±4.72), ação técnica pontapé de baliza curto (n=191; 6.36±3.99), decisão tática ataque posicional (n=498; 16.60±5.87), final da ação manutenção da posse de bola (n=593; 19.76±5.81) e zona final da ação 5 (n=131; 4.36±3.47). No processo defensivo, a ação dos GR tem enorme preponderância como último defesa e defesa da baliza. No processo ofensivo as ações técnicas com os pés são relevantes na participação na construção do ataque posicional. A ação dos GR é influenciada pela condição de visitado ou visitante.