This paper presents an automatic room conditioning system for controlling temperature and relative humidity at an essential level.The system is intended to design for the production of fruit-fly in a mass scale by automatically maintaining the room conditions of sterile insect technique (SIT) laboratory.The designed system consists of microcontrollers, a temperature and relative humidity sensor module, a radio-frequency (RF) data transmitter and receiver module, keypad and switching circuits.The integrated system works as a microcontroller acquires the temperature and relative humidity value from the sensor module, compares it to the predefined value of these parameters, and generates corresponding signals for the switching circuits to keep the temperature and relative humidity at required level.Data acquisition from senor module is performed using bidirectional 2-wire communication protocol.Moreover, the temperature and relative humidity data along with switching records are transmitted to a remote monitoring unit using RF transmitter and receiver module, where the more flexible universal synchronous/asynchronous receiver/transmitter (USART) protocol is employed for performing the serial communication between microcontroller and RF transmitter and receiver modules.The results show that the developed prototype system is performing satisfactory to maintain the desired room conditioning for mass production of fruit-fly of SIT laboratory and to monitor the room conditions remotely.It is supposed that this low-cost user friendly system can also contribute in many research and industrial areas, where automatic room conditioning system is crucial.
This study ascertained the effectiveness of Multimedia instructional package in improving primary school pupils' achievement in basic science at both post and follow-up measures.The design of the study was a randomized control trial experimental design.This design was apt since randomization of subjects was not done and intact classes were used.The sample size was 85 pupils from the two intact classes formed the participant for the study.Basic Science Achievement Test (BSAT) was used to collect data for the study.The internal consistency reliability index of BSAT was determined to be 0.87 using Kuder-Richardson formula 20 while the estimate of the temporal stability of the BSAT was 0.91 using person correlation.Analyses of covariance (ANCOVA) was used in testing the hypotheses at the 5% probability level.The use of multimedia projection in the form of Computer Assisted Learning (CAL) significantly (p < .050)improved pupils' achievement in basic science.The efficacy of the CAL in improving the pupils' achievement in Basic science was retained at the follow-up measure.Multimedia projection package proved very effective in enhancing the achievement in basic science.
Data security is one of the major challenges encountered by cloud computing.The cloud data is shared among multiple entities which can be intentionally or unintentionally revealed out by any agent to the unauthorized recipient.Therefore, it has become a necessity to detect the malicious agent for protecting shared information.In this regard, we present a framework based on the probabilistic estimation that identifies the malicious agent for minimizing the likelihood of further leakage.In the proposed model, the data is distributed among multiple agents and the allocation is performed using 2-level trees.The parameters based on probability theory are computed for malicious agent identification when the data is leaked by any agent.The experimental results achieved average probability, average success rate, and detection rate up to 1, 0.98, 0.76 respectively for the various number of agents.
