Challenges of Using ICT in assessing and Developing Students’ affective Domain in Education

ICT is becoming an inevitable tool in education nowadays. For any academic activities to be effective, the use of ICT is imperative. There are also a lot of benefits and improvement that ICT has brought to the field of education. These benefits and development cut across all spheres of education, such as the aspect of content, instruction and evaluation. In area of evaluation, the cognitive and psychomotor aspects of evaluation are mostly developed, based on the fact that both can be easily accessed through ICT. However, in the aspect of affective domain, the level of assessment is low and not absolutely reliable because it deals with the feelings, interest and values that learner attached to the subject matter. Hence, this study aimed at finding an effective way that ICT can be used to assess students’ affective domain in the process of evaluation. In order to get in-depth understanding of the subject matter, the study employs qualitative design by using semi-structured interview to elicit information from specialists in the field of communication technology. Findings from the study indicate that the use of ICT to evaluate student affective domain requires an illustrious, diligent, and enthusiastic ICT literate teacher. Equally, there is a need to develop software that will focus more on the evaluation of students’ affective domain. Meanwhile, this area that will develop students’ soft skills is greatly needed to produce good citizens, employees, and government of their individual community

Goal setting of EEOI for chemical tankers by Monte Carlo simulation

In accordance with the current regulations, the companies have to investigate the suitability of the applied operational measures; to assess the available solutions for the energy efficiency improvement of their fleet; and produce more suitable operational measures or revise their already applied measures. For this purpose, there is need to have a SEEMP and achieve EEOI targets. In this paper, a method for the prediction of the annual performance of the energy efficiency for a company’s fleet, based on Monte Carlo Simulation will be presented. As a case study, the method will be applied on a chemical tanker fleet. Recorded voyage data, including EEOI values, cargo type and quantity, mileage covered, speed profiles, fuel types etc., will be used. Conclusions on the feasibility, usability, reliability as well as suggestions for further development of the method will be included

Hybrid Yarn Composites for Construction

Textile-reinforced concrete (TRC) is a new innovative construction material that leads to light-weight and cost-effective construction. TRC consists of a finely grained cement-based matrix and high-performance, continuous multifilament yarns made of alkali-resistant glass, carbon, or polymer. Using these fibers provides superior mechanical properties and corrosion resistance in comparison with ferroconcrete. The application of epoxy resin coating to the textile materials improves the utilization of mechanical performance and handling properties as well. In recent years, researchers have studied alternative methods because coating process is very detailed and epoxy resin is of high cost. The experimental part of this chapter focuses on the experimental investigation carried out on high-strength concrete reinforced with hybrid yarns. Braiding technology was used to manufacture hybrid yarn from alkali-resistant glass fiber (ARG) and polypropylene (PP) filament. Next step, thermoplastic part of braided yarn was melted on press heating. Finally, TRC was produced from ARG, coated ARG, carbon fiber, coated carbon fiber, and heated hybrid yarns. Although the contribution of the heated hybrid yarn is limited, it is expected that the desired results will be obtained by changes in braiding yarn production and yarn composition ratios

Usporedba ekonomskih i tehnoloških svojstava brezovine i bukovine za proizvodnju furnirske ploče

The aim of this study was to investigate the use of birch wood, one of the most important wood species used in the plywood industry, especially in Europe, the Nordic countries, Poland, Belarus and Russia as an alternative to beech wood. For this purpose, comparison was made of their economic and technological properties. In five-ply plywood manufacturing, beech (Fagus orientalis Lipsky) and birch (Betula pendula) veneer sheets were used with melamine urea formaldehyde (MUF) and urea formaldehyde (UF) resins. Some mechanical properties such as shear strength, bending strength and modulus of elasticity of plywood panels were conducted according to EN 314-1 and EN 310, respectively. Mean mechanical strength obtained for birch plywood panels was quite above the limit values specified in the related standards. When taking into consideration the annual increment of beech and birch trees in 1 ha and the time they need to reach suitable diameters for the manufacturing of rotary cut veneers, it was calculated that birch trees provide 2.46 times more physical harvesting than beech trees.U radu je istraživana uporaba brezovine kao jedne od najvažnijih vrsta drva koja se upotrebljava kao alternativa bukovini za proizvodnju furnirskih ploča, posebice u Europi, u nordijskim zemljama, Poljskoj, Bjelorusiji i Rusiji. Za potrebe rada uspoređivana su njihova ekonomska i tehnološka svojstva. U proizvodnji furnirske ploče od pet slojeva upotrijebljeni su listovi furnira od bukovine (Fagus orientalis Lipsky) i brezovine (Betula pendula), koji su slijepljeni ljepilom na bazi melamin-urea-formaldehidnih (MUF) i urea-formaldehidnih (UF) smola. Ispitana su mehanička svojstva furnirskih ploča prema normi EN 314-1 i EN 310, i to čvrstoća na smicanje, čvrstoća na savijanje i modul elastičnosti. Dobivene srednje vrijednosti čvrstoće brezovih i bukovih furnirskih ploča bile su znatno iznad graničnih vrijednosti navedenih u normama. Kada se u obzir uzme godišnji prirast bukve i breze na 1 ha šume i vrijeme potrebno za postizanje odgovarajućih promjera za proizvodnju ljuštenih furnira, izračunano je da breza osigurava 2,46 puta više raspoložive količine za sječu od bukve

An Overview of the Effect of Covid-19 on Household Food Waste: How Does the Pandemic Affect Food Waste at the Household Level?

The COVID-19 outbreak created one of the largest pandemics globally, with the world health organization (WHO) declaring several measures, including restriction of movement to curtail the spread of the virus. Reducing food waste is critical to achieving healthy nutrition and sustainability in food systems. In this regard, private households have consistently been regarded as key actors in food waste generation. Hence, this study examined the effects of the COVID-19 pandemic on food waste in homes. A total of 1098 respondents were asked questions on how the pandemic affected their food preparation and consumption pattern, food purchasing and food waste. Compared with the situation before COVID19, there is a significant increase in kitchen spending and bread-making at home. Moreover, food waste generation and the frequency of eating out and food purchasing were reduced. Waste generation was higher in bakery products, left-over foods, and fruits and vegetables. Respondents suggested prudent meal preparation and consumption, increased awareness, and food purchasing restrictions as measures to reduce food waste. Overall, the pandemic has led to more stringent planning in household spendings and attitudinal changes regarding food preparation and consumption, resulting in a significant reduction in food waste and may have contributed to curtailing the spread of the COVID-19 virus

The guide in determining the criteria in developing contract parameters of shari’ah compliant e-commerce / Roshaimizam Suhaimi, Muhamad Rahimi Osman and Ismail Ahmad

E-commerce has become a common phenomenon today throughout the world, including Malaysia. Muslims, too, have been involved in this modern activity in order to fulfill their obligatory needs and individual necessities. Therefore, it is very important to ensure all e-commerce related activities conform to the basic principles of selling and buying according to the current fiqh muamalat and viewpoint of scholars in relation to the contract. Using the qualitative method approach, this article aims to underline some criteria to be used as a guide in developing the parameters of e-commerce contracts which are shari’ah compliant. The researcher uses the literature review and interview for data collection in identifying and determining the relevant criteria of guide in developing e-commerce parameters. In determining the main dimension, it must be verified through the method of interview with informant of muamalat experts. Results of the study found that e- ommerce parameters comprise of three main dimensions and twenty-eight guide items to ensure that e-commerce contracts are shari’ah compliant

Utjecaj parametara CNC obrade na kvalitetu površine drvnih ploča koje se upotrebljavaju u industriji namještaja

The processing of wood-based panels such as plywood, particleboard and fiberboard, which are widely used in the furniture industry, with CNC (Computer Numerical Control) milling machines has been increasing recently. Even though CNC milling machines have many advantages for furniture producers, it is difficult to set process parameters to obtain the desired surface quality of the material. Therefore, it is necessary to determine the most suitable of these parameters for the surface quality of each wood-based panel. This study aimed to determine the effects of processing parameters on the surface quality of plywood, particleboard and medium density fiberboard (MDF) panels processed in CNC milling machines. Furthermore, the average surface roughness values of these panels were compared after CNC processing. Three spindle rotational frequencies (10.000, 14.000 and 18.000 rpm), three feed rates (5, 7, and 9 m/min) and two cutting tool diameters (2 and 5 mm) were selected as CNC processing parameters. To determine the surface quality of wood-based panels, the surface roughness measurements were performed according to DIN 4768 standard and three surface roughness parameters (Ra, Rmax and Rz) were determined. According to the results of this study, it can be concluded that the surface roughness values of wood-based panels decreased with increasing spindle rotational frequency and feed rate, while they increased with increasing cutting tool diameter. Among the wood-based panels used in this study, the lowest average roughness values were obtained for plywood samples.Za obradu ploča na bazi drva kao što su furnirske ploče, iverice i vlaknatice, koje imaju široku primjenu u industriji namještaja, u posljednje se vrijeme sve češće primjenjuju CNC (Computer Numerical Control) glodalice. Iako CNC glodalice imaju mnoge prednosti za proizvođače namještaja, teško je odrediti parametre procesa za postizanje željene kvalitete površine obrađivanog materijala. Stoga je potrebno odrediti najprikladnije parametre obrade za svaku vrstu ploče na bazi drva. Cilj ovog istraživanja bio je utvrditi utjecaj parametara obrade CNC glodalicama na kvalitetu površine furnirske ploče, iverice i ploče vlaknatice srednje gustoće (MDF ploče). Nadalje, uspoređene su srednje vrijednosti hrapavosti površine tih ploča nakon CNC obrade. Kao parametri CNC obrade odabrane su tri frekvencije vrtnje vretena (10 000, 14 000 i 18 000 okr./min), tri posmične brzine (5, 7 i 9 m/min) te dva promjera reznog alata (2 i 5 mm). Za određivanje kvalitete površine ploča na bazi drva provedena su mjerenja hrapavosti površine prema normi DIN 4768, a hrapavost je iskazana trima parametrima hrapavosti površine (Ra, Rmax i Rz). Prema rezultatima ovog istraživanja može se zaključiti da su se vrijednosti hrapavosti površine ploča na bazi drva smanjivale s povećanjem frekvencije vrtnje vretena i posmične brzine, dok su se povećavale s povećanjem promjera reznog alata. Među pločama na bazi drva na kojima je provedeno ovo istraživanje najniže srednje vrijednosti hrapavosti dobivene su za uzorke furnirske ploče

Cytotoxicity of seven recent dentine bonding agents on mouse 3T3 fibroblast cells

Today it is generally accepted that most bonding agents are cytotoxic. In this study the relative cyto-toxicity of seven recent dentine bonding agents on mouse 3T3 fibroblast cells were investigated. Materials and Methods. Near-confluent mouse 3T3 fibro- blast cells were exposed to Dulbecco Modified Eagle’s Medium containing extractions from the seven different bonding agents. The cell survival rate was then determined using the standard MTT assay. Results. The cell survival rate ranking is: iBond (94%) < Gbond (78%) < Xeno V (71%) < Adper Easy Bond (63%) < Xeno V+ (61%) < Adper Scotchbond SE (33%) < XP Bond (32%). Part A of Adper Scotchbond SE had a survival rate of 35% and part B 38%. These two parts did not differ significantly. Adper Scotchbond SE and XP Bond do not differ significantly. While Xeno V+, Xeno V and Adper Easy Bond do not differ. (p < 5%; Tukey-Kramer Multiple-Comparison Test). Conclusion. All of the tested adhesive bonding agents were cytotoxic with survival rate of 3T3 cells between 94% to 31%. Of the 7 bonding agents tested iBond was found to be only slightly toxic and by far the least toxic. The two bonding agents (XP Bond and Adper Scotchbond SE) containing UDMA plus TEGDMA plus HEMA plus camphorquinone were found to be the most toxic