Marine Acoustics (United States)

The study assessed the effect of mental mathematics games with consecutive numbers’ datasets on students’ fluency in determining with means and medians of datasets. The embedded mixed methods design was employed using the non-equivalent group quasi-experimental design. A purposive sample of two schools out of four senior high and technical schools in the district were selected, and simple random sampling technique was used to select one Form 2 intact class from each school, one as control group and the other as experimental group. A sample size of 61 students were involved comprising 30 in the control group and 31 in the experimental group. Both qualitative and quantitative data was collected using tests and interview guide. Pre-test was administered to all students before the experiment, which was followed by a post-test. The experimental group was taught using mental mathematics games with consecutive numbers’ datasets and the contorol group was taught with the conventional method without mental math exercises. The findings from the independent samples t-test showed that the mean score of students taught using mental mathematics games with consecutive numbers’ datasets (M=19.71; SD=6.28) was significantly higher than the mean score of students taught using the conventional method (M=12.17; SD=3.65), leading to a statistically significant difference in the students’ mean scores [t (59) = 7.48, p = .000). This suggests there was a positive effect of the treatment in improving the students’ fluency in determining means and medians. Though the results demonstrated that both groups improved, the paired sample t-test indicated the experimental group’s effect size, 1.47, was higher than the control group’s 0.75. The interview results indicated the students perceived the mental mathematics games as making their learning meaningful, enjoyable and led to better conceptual understanding. It is recommended that teachers should incorporate the use of mental mathematics games in their lessons to improve students’ mental computational fluency.

В современных условиях внешнеэкономическая деятельность любой страны, нацеленной на развитие экономики, выстраивается на разделении производства и организации транспортных коридоров для взаимодействия. Функционирование рынка транспортных услуг происходит при кризисных явлениях в экономике, в условиях санкций и контрсанкций. При этом рост рынка не останавливается, тем важнее развивать транспортные связи, чтобы активизировать торговое сообщение как внутри страны, так и за ее пределами. Транспорт сегодня должен отвечать определенным требованиям, быть надежным, готовым к нагрузкам. Сфера перевозок требует соблюдения сроков доставки, скоростного режима, сохранности груза, гибкости ценовой политики. Осуществление мультимодальных перевозок выстраивается таким образом, чтобы минимизировать издержки без потери качества предоставляемых услуг. Поэтому сегодня это особенно перспективный способ доставки грузов. На маршруте могут быть использованы не менее двух видов транспортных средств, это также может быть авиационный транспорт. In modern conditions, the foreign economic activity of any country aimed at economic development is based on the division of production and the organization of transport corridors for cooperation. The functioning of the transport services market occurs during economic crises, in the context of sanctions and counter-sanctions. At the same time, the growth of the market does not stop, the more important it is to develop transport links in order to activate trade communication both within the country and abroad. Transport today must meet certain requirements, be reliable, and be load-bearing. The transportation sector requires compliance with delivery deadlines, speed limits, cargo safety, and pricing flexibility. The implementation of multimodal transportation is structured in such a way as to minimize costs without losing the quality of services provided. Therefore, today it is a particularly promising method of cargo delivery. At least two types of vehicles can be used on the route, it can also be air transport

Экономическая эффективность любого современного государства во многом зависит от качества транспортной инфраструктуры. Промышленность и торговля также обусловлены активностью и бесперебойностью транспортной системы. Транспортные отношения в РФ являются сферой правового регулирования. Использование авиационного транспорта способствует расширению мировых транспортных связей на глобальном уровне. Воздушный транспорт является самым скоростным и активно занимает рынок транспортных грузовых услуг в последние годы. Среди его несомненных преимуществ – возможность доставки в любую точку мира за короткий срок, безопасность, небольшой риск повреждения товара. The economic efficiency of any modern state largely depends on the quality of the transport infrastructure. Industry and trade are also driven by the activity and continuity of the transport system. Transport relations in the Russian Federation are a sphere of legal regulation. The use of aviation transport contributes to the expansion of global transport links at the global level. Air transport is the fastest and has been actively occupying the market of cargo transportation services in recent years. Among its undoubted advantages are the possibility of delivery to anywhere in the world in a short time, safety, and a low risk of damage to the goods.

O presente artigo tem como objetivo demonstrar a importância da psicomotricidade nos anos iniciais do ensino fundamental e como ela contribui positivamente para o desenvolvimento cognitivo da criança. Através de jogos, brincadeiras e atividades lúdicas que promovem um desenvolvimento motor e psicoemocional. Os profissionais devem estar aptos a realizá-los para que os benefícios sejam direcionados aos alunos.

It is at school that the child tests his physical, intellectual and emotional capacities, sharing the same physical space. In this context, the teacher is faced with challenging behaviors on the part of some students such as: disorganization, lack of motivation, difficulty in paying attention, problems in completing tasks, excessive agitation, difficulty in learning and sometimes aggressiveness, complicated cases, difficult to be worked. One of the most common cases is Attention Deficit Hyperactivity Disorder – ADHD. There is a need to seek support in extra-class professional specialties. It will be approached about the intervention of Neuropsychopedagogy in learning disorders resulting from ADHD.

Presented here is a broadly applicable, transparent, repeatable analytical framework for assessing relative risk of anthropogenic disturbances on marine vertebrates, with the emphasis on the sound generating aspects of the activity. The objectives are to provide managers and action-proponents tools with which to objectively evaluate drivers of potential biological risk, to identify data gaps that limit assessment, and to identify actionable measures to reduce risk. Current regulatory assessments of how human activities (particularly those that produce sound) influence the likelihood of marine mammal behavioral responses and potential injury, rely principally on generalized characterizations of exposure and effect using simple, threshold-based criteria. While this is relatively straightforward in regulatory applications, this approach fails to adequately address realistic site and seasonal scenarios, other potential stressors, and scalable outcome probabilities. The risk assessment presented here is primarily based on a common and broad understanding of the spatial-temporal-spectral intersections of animals and anthropogenic activities, and specific examples of its application to hypothetical offshore wind farms are given. The resulting species- and activity-specific framework parses risk into two discrete factors: a population’s innate ‘vulnerability’ (potential degree of susceptibility to disturbance) and an ‘exposure index’ (magnitude-duration severity resulting from exposure to an activity). The classic intersection of these factors and their multi-dimensional components provides a relativistic risk assessment process for realistic evaluation of specified activity contexts, sites, and schedules, convolved with species-specific seasonal presence, behavioral-ecological context, and natural history. This process is inherently scalable, allowing a relativistic means of assessing potential disturbance scenarios, tunable to animal distribution, region, context, and degrees of spatial-temporal-spectral resolution.

Au Québec, l’interdiction de toute discrimination fondée sur le handicap, ainsi que l’interdiction de toute atteinte à la vie privée, figurent notamment dans la Charte des droits et libertés de la personne. Appliquées au stade de l’embauche, ces interdictions empêchent un employeur de solliciter des informations sur l’état de santé d’un candidat à un poste. Néanmoins, une exception existe : lorsque les aptitudes ou qualités requises par l’emploi l’exigent. L’usage des questionnaires médicaux de préembauche, par les employeurs publics comme privés, tente de s’insérer dans cette exception et interroge le périmètre de protection offert par les normes juridiques applicables.

Fin whale doublet calls, described as two 20-Hz pulses recorded at different interpulse intervals, have been attributed to the whale's calling behavior, however they could also result from acoustic mode propagation effects. Modes travel with their own frequency-dependent group velocities. The dispersion of these modes results in the sound being recorded as multiple arrivals on a receiver. Multiple modal arrivals of 20-Hz fin whale calls were recorded, with mode one arriving after mode two. The time delay between modal arrivals varied throughout the recording and is range dependent. The range dependency of this time delay was used to estimate the range of the whale from individual hydrophones by determining the modal group velocities that resulted in the observed delays. A pair of hydrophones was used to localize the whale for the duration of time when two modes were detected. The KRAKEN normal mode model was utilized in an inversion scheme to determine the compressional wave speed and depth-to-bedrock in the study area that supported the estimated modal group velocities. The inversion resulted in a depth-to-bedrock of 200 m and compressional wave speed of 1735 m/s, which were supported by measurements reported in literature for nearby regions. [Work supported by BOEM.]