HOW TO USE SPSS SOFTWARE TO HELP STUDENTS IN SCIENTIFIC RESEARCH

Currently, SPSS software is being used and selected by many researchers as a popular tool in quantitative data analysis for all fields of the humanities and social sciences, as well as the natural sciences. course

Attitudes toward Self-Disclosure on Facebook: A Review of Perception, Emotion and Behavior in University Students

A number of social networking platforms have emerged as a result of the development of information and communication technology which have become increasingly user-friendly and full with valuable features. The social networking site with most users is Facebook. Teenagers, particularly college students use Facebook most frequently to study, gain information, entertain themselves and connect with others through self-disclosing personal information on the Facebook profile page. This quantitative study aimed to analyze the attitude of pedagogical students regarding self-disclosure on Facebook as represented through cognition, emotion and behavior concerning academic achievement. The survey was completed by 535university student’s majority in pedagogy. There were 41 students who used it for less than three years between three to five years by 218 students and 276 students who use it more than five years. The questionnaire was self-reported by participants to assess university students' attitudes toward self-disclosure on Facebook. The results indicate that pedagogical students with excellent academic achievement and more than five years of Facebook experience had the highest-level attitude toward self-disclosure on Facebook. The results indicate a positive relationship between cognition, emotion and influence factors students' Facebook attitudes. Future research on methods that enhance student positive disclosure can benefit from this study. Future research should examine how self-disclosure on Facebook relates to other aspects, such as Facebook usage time, financial state and perception of advantages and its disadvantages of Facebook in order to evaluate students' attitudes objectively

Investigating the elements influencing the psychological issues of reform school students

Reformatory students are those whose deviant behaviors and habits prevent them from receiving education under normal educational conditions. These students frequently lead a careless, undisciplined lifestyle, being unwilling to work and learn eager to play and demanding. Therefore, when they are admitted to reformatories with severe study and lifestyle requirements, they have great psychological difficulty adjusting to their new environment. Students’ psychological issues in adapting to reformatory learning and living regimes are difficult and psychological deficits make it challenging for students to adapt to reformatory learning and living conditions. In Vietnam, 665 students from reformatory schools were polled to determine the causes of psychological issues. According to the findings, a variety of elements contribute to students’ psychological difficulties. Individual student conditions such as health, awareness, attitudes and actions as well as inappropriate habits, living without goals or aspirations, etc. are on the subjective side of the equation. On the objective side are the students’ conditions, family, education and psychological obstacles brought on by less-than-ideal circumstances which will make it more difficult for community students to adapt. Both the new school and society must pay more attention to reformatory students in order to establish the conditions necessary for successful integration into the new school and ultimate readmission into society for these students

Depth of powers of edge ideals of Cohen-Macaulay trees

Let $I$ be the edge ideal of a Cohen-Macaulay tree of dimension $d$ over a polynomial ring $S = \mathrm{k}[x_1,\ldots,x_{d},y_1,\ldots,y_d]$. We prove that for all $t \ge 1$, $$\operatorname{depth} (S/I^t) = \operatorname{max} \{d -t + 1, 1 \}.$

Evaluation of Pseudomonas stutzeri AM1 and Pseudomonas oleovorans ST1.1 isolated from shrimp pond sediments as probiotics for whiteleg shrimp, Litopenaeus vannamei culture

This study aimed to isolate the probiotic potential of nitrifying bacterial strains and to evaluate their effects on water quality and growth performance of the whiteleg shrimp, Litopenaeus vannamei. Based on an initial screening of 100 isolates identified from sediment samples, 12 strains could remove nitrogen compounds and two strains (Pseudomonas stutzeri AM1 and P. oleovorans ST1.1) showed highly efficient nitrogen removal ability. Within 96 h, total ammonia nitrogen (TAN) removal efficiency in the two strains was 28.0-31.6% and 21.5-24.9%, respectively. The water addition of 103 CFUmL-1 of P. stutzeri AM1 (T1) and P. oleovorans ST1.1 (T2) effectively reduced TAN, nitrite, nitrate, and total sulfide and increased the survival rate and biomass of shrimp. However, no significant differences were found between the control (T0) and treatment groups (T1 and T2) in the final weight, weight gain and specific growth rate of shrimp. Overall, P. stutzeri AM1 (T1) and P. oleovorans ST1.1 used as water supplements improved water quality and the survival rate of whiteleg shrimp

ARSENIC REMOVAL FROM WATER BY CHEMICAL OXIDATION AND ADSORPTION ON IN-SITU FORMED FERRIC HYDROXIDE

Joint Research on Environmental Science and Technology for the Eart

Ho Chi Minh Ville : de la migration à l'emploi

L'agglomération de Ho Chi Minh Ville est le principal pôle de développement du Viêtnam. La politique de libéralisation économique mise en oeuvre depuis 1986 est en train de bouleverser l'économie de la ville, ce qui entraîne notamment une forte croissance économique, un accroissement des disparités ville-campagne, une augmentation des flux migratoires, un développement du secteur privé, un élargissement des disparités sociales en ville. Parallèlement, le contrôle de l'immigration en ville, depuis longtemps strict, avec l'instauration d'un permis de résidence, est devenu beaucoup plus lâche. Dans ce contexte, les principales caractéristiques de la migration et de l'emploi en ville sont analysées à partir des résultats d'une enquête menée en 1994. Certaines données sont semblables à ce que l'on rencontre dans d'autres pays de l'Asie du Sud-Est, telle que la prépondérance des femmes parmi les migrants. D'autres résultats sont plus originaux, comme l'éducation assez élevée du migrant, le maintien du chômage à un niveau inférieur à ce qu'on aurait pu craindre, l'insertion limitée du migrant dans le secteur informel, le revenu relativement élevé du migrant... Cependant, l'évolution en cours laisse présager une modification très rapide de la situation avec une très forte croissance urbaine à venir, même si les données démographiques récentes manquent cruellement, le dernier recensement datant de 1989. Cette urbanisation sera très difficile à maîtriser et ses conséquences risquent d'être négatives à terme. Une des solutions serait le développement des centres urbains secondaires destinés à faire "tampon" sur les axes de migration de la campagne vers la grande ville. (Résumé d'auteur

Corrosion protection of carbon steel by an epoxy resin containing organically modified clay

This study focusses on the use of montmorillonite clay (MMT) treated with an organic compound (aminotrimethylphosphonic acid (ATMP)) and dispersed in an epoxy resin to improve corrosion protection of carbon steel. X-ray diffraction was performed to verify that the individual silicate layers were separated and dispersed in the epoxy resin. Corrosion resistance of the coated steel was evaluated by electrochemical impedance spectroscopy (EIS) and local electrochemical impedance spectroscopy (LEIS). Three systems were tested: the epoxy clear-coat, the epoxy resin containing 2 wt.% clay and the epoxy resin containing 2 wt.% clay modified byATMP (ATMP-modified clay). From conventional EIS, it was shown that the incorporation of clay or ATMP-modified clay in the epoxy matrix significantly improved the barrier properties of the coating. The corrosion resistance of the carbon steel coated by the epoxy resin containing ATMP-modified clay was higher than that obtained for the system containing non-treated clay. Local electrochemical measurements performed on scratched samples revealed the inhibitive role of ATMP at the carbon steel/coating interface

Production and processing of canna vermicelli in Hung Yen province toward sustainable development

Located in the Red River Delta region, Hung Yen province has 923000 ha of total land area, of which agricultural land area occupied 60.67%. The agricultural land area per labor is 0.1 ha. However, it has been annually decreasing due to the development of industrial zone, construction of urban zone, expansion of road… For these reasons, the stainable development for production and processing of agricultural products plays a very important role in job creation for farmers who loosed their own agricultural land, avoidance of quantity and quality loosing of raw agricultural products and increase in economic efficiency of agricultural production and processing. The production and processing of canna are traditional jobs of rural households in Hung Yen. They not only have been creating jobs for rural households but also increasing in their income. Beside the social and economic benefit created by these activities, the processing activity has caused many negative consequences. It led to environmental pollution due to its waste, overuse of chemical substances. Desiccated of vermicelli in bad condition resulted in the unsafe food. Therefore, this study is conducted to deeply investigate both positive effects and negative consequences created by production and processing of canna vermicelli in term of economic, social and environmental aspects. This study concentrates on the farm households; discuss advantages and disadvantages of production inputs, processing techniques and output market of their products from arrowroot to vermicelli; and find out solutions for the sustainable development for production and processing of vermicelli