A Comparative Study of Student Motivation for Learning Science and Science Achievement in The English and Thai Programs at Mathayomwatsing School in Bangkok, Thailand

The purpose of this study was to explore the relationship betweenstudent motivation for learning science and science achievement of 55 mathayom 3 students in the English and Thai Programs at Mathayomwatsing School in Bangkok, Thailand. This study employed a quantitative methodology employing both a questionnaire as well as “O” Net scores to address the research objectives. The study had six objectives which were 1) To determine the level of student motivation for learning science in the English Program at Mathayomwatsing school, in Bangkok, Thailand. 2) To determine the level of student motivation for learning science in the Thai Program at Mathayomwatsing school, Bangkok, Thailand. 3) To find the correlation between student motivation for learning science and science achievement in the English Program at Mathayomwatsing school in Bangkok, Thailand. 4) To find the correlation between student motivation for learning science and science achievement in the Thai Program at Mathayomwatsing school in Bangkok, Thailand. 5) To compare student motivation for learning science betweenstudents in the English and Thai programs at Mathayomwatsing school in Bangkok, Thailand. 6) To compare science achievement between students in the English and Thai programs at Mathayomwatsing school in Bangkok, Thailand. The researchfindings were the level of student motivation for learning science in the English and Thai Programs at Mathayomwatsing School in Bangkok, Thailand were “rarely to sometimes” motivated and there was a significant relationship between student motivation for learning and the student science achievement in the English and Thai Programs at Mathayomwatsing School in Bangkok, Thailand. There was no significant difference of student motivation for learning science and science achievement between students in the English and Thai programs at Mathayomwatsing School in Bangkok, Thailand

User Profiling for Search Engines’ Help Systems

The Help Systems information provided by search engines can facilitate or hinder its user’s information seeking process. This paper reports a study in how users would like to see search engines’ Help Systems to be organized and presented. Six aspects of Help Systems, including navigation, design elements, technical help, conceptual help, terminological, and strategic aspects, were used as the framework to develop questionnaire for further study in stereotyping search engine users. Overall users do not expect animations, videos and speech as part of a search engine’s Help System, technical help is desirable, and the navigation to find Help page and relevant content is important

Pretreatment and enzymatic hydrolysis optimization of lignocellulosic biomass for ethanol, xylitol, and phenylacetylcarbinol co-production using Candida magnoliae

Cellulosic bioethanol production generally has a higher operating cost due to relatively expensive pretreatment strategies and low efficiency of enzymatic hydrolysis. The production of other high-value chemicals such as xylitol and phenylacetylcarbinol (PAC) is, thus, necessary to offset the cost and promote economic viability. The optimal conditions of diluted sulfuric acid pretreatment under boiling water at 95°C and subsequent enzymatic hydrolysis steps for sugarcane bagasse (SCB), rice straw (RS), and corn cob (CC) were optimized using the response surface methodology via a central composite design to simplify the process on the large-scale production. The optimal pretreatment conditions (diluted sulfuric acid concentration (% w/v), treatment time (min)) for SCB (3.36, 113), RS (3.77, 109), and CC (3.89, 112) and the optimal enzymatic hydrolysis conditions (pretreated solid concentration (% w/v), hydrolysis time (h)) for SCB (12.1, 93), RS (10.9, 61), and CC (12.0, 90) were achieved. CC xylose-rich and CC glucose-rich hydrolysates obtained from the respective optimal condition of pretreatment and enzymatic hydrolysis steps were used for xylitol and ethanol production. The statistically significant highest (p ≤ 0.05) xylitol and ethanol yields were 65% ± 1% and 86% ± 2% using Candida magnoliae TISTR 5664. C. magnoliae could statistically significantly degrade (p ≤ 0.05) the inhibitors previously formed during the pretreatment step, including up to 97% w/w hydroxymethylfurfural, 76% w/w furfural, and completely degraded acetic acid during the xylitol production. This study was the first report using the mixed whole cells harvested from xylitol and ethanol production as a biocatalyst in PAC biotransformation under a two-phase emulsion system (vegetable oil/1 M phosphate (Pi) buffer). PAC concentration could be improved by 2-fold compared to a single-phase emulsion system using only 1 M Pi buffer

Confirmation of Skywalker Hoolock Gibbon (Hoolock tianxing) in Myanmar extends known geographic range of an endangered primate

Characterizing genetically distinct populations of primates is important for protecting biodiversity and effectively allocating conservation resources. Skywalker gibbons (Hoolock tianxing) were first described in 2017, with the only confirmed population consisting of 150 individuals in Mt. Gaoligong, Yunnan Province, China. Based on river geography, the distribution of the skywalker gibbon has been hypothesized to extend into Myanmar between the N’Mai Kha and Ayeyarwaddy Rivers to the west, and the Salween River (named the Thanlwin River in Myanmar and Nujiang River in China) to the east. We conducted acoustic point-count sampling surveys, collected noninvasive samples for molecular mitochondrial cytochrome b gene identification, and took photographs for morphological identification at six sites in Kachin State and three sites in Shan State to determine the presence of skywalker gibbons in predicted suitable forest areas in Myanmar. We also conducted 50 semistructured interviews with members of communities surrounding gibbon range forests to understand potential threats. In Kachin State, we audio-recorded 23 gibbon groups with group densities ranging between 0.57 and 3.6 group/km2. In Shan State, we audio-recorded 21 gibbon groups with group densities ranging between 0.134 and 1.0 group/km2. Based on genetic data obtained from skin and saliva samples, the gibbons were identified as skywalker gibbons (99.54–100% identity). Although these findings increase the species’ known population size and confirmed distribution, skywalker gibbons in Myanmar are threatened by local habitat loss, degradation, and fragmentation. Most of the skywalker gibbon population in Myanmar exists outside protected areas. Therefore, the IUCN Red List status of the skywalker gibbon should remain as Endangered

Design of Altitude measuring unit for guided applications

This research paper focuses on the design of altitude measurement unit (Altimeter Unit) for infrared target seeking guided missile based on IGS (Inertial Guidance System). Moreover, the investigation highlights on IGU (Inertial Guidance Unit) that comprises accelerometers, pressure sensors and electromagnetic devices. The data acquisition, data storage, data computing facilities need to be extremely precise for this system. This paper also covered literature survey and source, collection of design for missile motion and the force vector derivations are also mentioned in the selection of control devices and equipments. The software source code in each portion is developed for MPASM assembler and PIC C complier. This research paper also endeavours to build a small model missile body to lest our system on board. The design used data acquired from tests conducted by internationally known missile research laboratories the functional test results are explained and discussed for further extensions

Increasing Efficiency of Dye-sensitized Solar Cells through Co-sensitization of Organic Dyes LEG4 and DN-F10 as Light Absorber

Organic dyes LEG4/DN-F10 as efficient co-sensitized dye system were introduced in dye- sensitized solar cell. With attribution of broaden spectral absorption, the LEG4/DN-F10 co-sensitized dye system could improve the photovoltaic performance of devices in combination with Co(II/III) electrolyte. The photo-transition energy gap of LEG4/DN-F10 system is 1.81 eV. In the present work, power conversion efficiency (PCE) of 4.47% were achieved for device based on LEG4/DN-F10 with short circuit current density, Jsc of 6.87 mA/cm2, Voc of 0.76 V and FF of 56.78 while PCE of device with single dye are 3.41% for LEG4 dye and 3.76% for DN-F10 dye. The co-sensitization is a simple and effective strategy to improve the photovoltaic performance of the device. Further optimization steps are needed to enhance power conversion efficiency and it is under way