47 research outputs found
New Approach for Boat Motion Analysis in Rowing
In rowing, the study of the movement of the boat and of the rower in the boat is difficult. Indeed, the shell is quite narrow and fragile and it is impossible to use the classical apparatus for physiological and biomechanical analysis.
For this reason, the physiological studies of rowers (cardiac and pulmonary parameters) have been more easily realised on specific and non specific ergometers (see Hagerman for an extensive review 1984): it is well known now, that rowers have exceptional aerobic possibilities and also use anaerobiosis for the start and the final part of the race (Hagerman 1984).
In contrast, only a few publications deal with the movement of the boat and the rower. The velocity of the boat at different stroke rates (Martin and Bernfield 1980), the angular velocities of various articulations of the rowers (Nelson and Widule 1983) were studied by kinematic analysis.
Though this technique is very useful, it does not catch the movements behind the subjects and is of no use to record physiological and mechanical parameters (Ishiko 1967).
Some authors used DC recorder placed in a motor boat following the racing shell to record different parameters (Baird and Soroka 1952; Di Prampero 1971; Celentano 1974). But, this technique is not practical because of the need of a second operator to keep the cables out of the water.
With the miniaturization, Ishiko proposed and used multichanneltelemetry to record the force of the rower and the acceleration of the boat (Ishiko 1967; Ishiko 1971). Schneider also used the same technique to record the force of the rower in the boat (Schneider 1978).
Though this technique is excellent and powerful, it is also very expensive and quite sophisticated.
Our goal was thus to take advantage of the miniaturization of the elements and to build and use a recorder and transducers that can be placed into the boat to record the acceleration of the boat and the propulsive force of the rower
Evolutionary models for the interaction of the higher education labor force and higher education market
The higher education market portends to be a huge market in the future that traditional systems of delivery of services will be insufficient. This paper proposes a model that links two (2) global markets: the higher education market and the labor market, as dramatic changes are taking place in the 21st century. A modeling and simulation strategy has been employed in this paper predicting the impact of higher education market to the labor market. Results indicated that with the rapid expansion of the higher education market, the size of the higher education labor force will inevitably expand. The labor market tolerates a maximum expansion capacity for HE graduates beyond which the excess HE graduates will bifurcate into two (2) channels of productive sector, namely: (a) the creation of new economies; or (b) the integration of HE graduates into the skilled labor force. This dynamics necessarily yields a highly fragmented labor force con iguration. In essence, the evolution of the labor market is a replica of Darwin’s Biological Theory of Evolution where only the ittest will survive, i.e. evolution through mutation and adaptation whose equivalent concepts in this setting are “innovation” and “adaptation” respectively. It is well-established in Evolutionary Biology that “mutation” is the shortest-route to evolution and so we posit that “innovation” is the shortest route to the labor market evolutionary ladder. Therefore, a good university must be able to produce graduates who are innovative and adaptive at the same time to survive in a competitive labor market
The Effects of Aerobic Bokashi in the Production of Sweet 16-F1 Watermelon (Citrullus lunatus)
The study aimed to determine the effects of aerobic bokashi on the growth and yield of watermelon (Citrullus lunatus). Specifically, it was intended to determine the response of watermelon in terms of length of vine, girth of vine, days to flowering, weight of fruits, and yield per plot. The study also performed cost and return analysis. The study used a Randomized Complete Block Design (RCBD). The study used 12 experimental plots with 4 treatments and 3 replications. The treatments were the following; Treatment 1: 500 grams (g) of aerobic bokashi per hill, Treatment 2: 1000 grams, Treatment 3 - 1500 grams, and Treatment 4: control. The study was conducted off-season at Dr. Emilio B. Espinosa Memorial State College of Agriculture and Technology (DEBESMSCAT), Mandaon, Masbate, Philippines, from January to March 2021. The result of the study on levels of aerobic bokashi has no significant effect on vine length, vine diameter, days to flower, fruit diameter, and weight of fruits. However, in terms of fruit length and yield, the aerobic bokashi gave significant results. The fruit length and yield per plot were significantly different among the other treatments. This implied that the different levels of boskashi applied will give a different response in terms of fruit length and yield. The most viable result of the cost and return analysis was treatment A. The use of aerobic bokashi in watermelon cost PhP 1,391.00, this investment gave a net income of PhP 1,651.00 and a 118.69 % return on investment
Design and Automation of a Solar Powered Soil Moisture Monitoring System (SPSMMS)
A solar powered soil moisture monitoring system (SPSMMS) was developed and evaluated at Cavite State University (CvSU) Main Campus, Cavite. The study evaluated the operating performance of the fabricated SPSMMS in terms of sensitivity of sensors, accuracy of reading, and transmission system efficiency. The device was fabricated using locally available materials. Its overall dimension in terms of length, width and height is 0.36m x 0.31m x 2m, respectively. The device is composed of the main frames, automation system, power system. The automation system is composed of main parts such as Arduino Mega2560, resistor type sensors, GSM module, data logger, and RTC. The system reads the moisture level every one (1) hour and thirty (30) minutes and send SMS every three (3) hours of operation. The study has two (2) installations placed in the crop production area of CvSU. The soil moisture was at the highest in the first installation compared from the second installation due to different environmental conditions. Installation 1 was placed in a fully irrigated area, slightly shaded, and vegetated. While, installation 2 was placed in a fully open, not vegetated, and not well irrigated. The total fabrication cost of two (2) devices is PhP 31,866.00. The total operating cost per year of the SPSMMS was compared to the standard soil moisture meter (Extech Meter Model) which is PhP 11,520 .00 and PhP 87,600.00, respectively
Effects of Different Animal Manure Combined with Carbonized Rice Hull on the Growth and Yield Performance of Tomato (Solanum lycopersicum)
This study was conducted to evaluate the effects of different animal manure to tomato production. The study adapted the Randomized Complete Block Design (RCBD) of experiment having five (5) treatments which were; Treatment A- 40% Horse manure with 10% carbonized rice hull and 50% Garden soil; Treatment B- 40% Cattle manure with 10% carbonized rice hull and 50% Garden soil; Treatment C- 40% Goat manure with 10% carbonized rice hull and 50% garden soil; Treatment D- 40% Vermicast with 10% carbonized rice hull and 50% Garden soil; Treatment E- 100% Garden soil Control and were replicated three (3) times. It appeared that the application of cattle manure & carbonized rice hull combination and goat manure & carbonized rice hull combination had significantly influenced the total weight harvested, weight of yield per harvest and number of fruits per harvest of tomato. The fruit diameter was significantly affected by the application of horse manure and carbonized rice hull combination. The growth increment, average number of days from flowering to first harvest and fruit length of tomato were not directly influenced by the different organic fertilizer and soil enhancer applied. Therefore, the different animal manure mixed with carbonized rice hull applied as fertilizer gave uniform response to the tomatoes in its vegetative stage. Combining or mixing all the treatments (animal manure) and carbonized rice hull applied in the study would give significant results to the organic production of tomatoes
Eosinophil-derived neurotoxin levels in early childhood and association with preschool asthma – A prospective observational study
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