Academic Integrity in a Digital Era: Should the Use of ChatGPT Be Banned in Schools?

Divine Ogugua,Seong No Yoon,DonHee Lee People&Global Business Association 2023 Global Business and Finance Review Vol.28 No.7

Purpose: This paper is to examine the ethical implications of the use of ChatGPT in academia. Design/methodology/approach: This study reviews the previous research and cases associated with using a generative AI, such as ChatGPT, to effectively use ChatGPT in education for teachers and students by examining the negative (especially ethical issues) and positive aspects of ChatGPT. Findings: The findings of this research are that the usage of ChatGPT in schools has both negative and positive aspects. The results of this study indicated that effectively incorporating ChatGPT into educational settings: 1) identify opportunities to integrate ChatGPT into the curriculum; 2) define the specific goals and objectives to be achieved using ChatGPT in classes; 3) establish clear guidelines and boundaries for using ChatGPT; and 4) emphasize the importance of critical thinking and independent problem-solving skills with ChatGPT. Research limitations/implications: Considering the lack of previous research on ChatGPT, the limitations of this study lie in the fact that it is not based on empirical research with actual data. Originality/value: This study suggests potential opportunities and challenges for educational institutions, students, policymakers, and users regarding the using ChatGPT.

Effect of the Co-Pyrolysis of Kelp Seaweed and Spent Mushroom Substrate on the Sorption Properties of Resulting Biochars

Divine Damertey Sewu,Patrick Boakye,Seung Han Woo 대한환경공학회 2017 대한환경공학회 학술발표논문집 Vol.2017 No.11

Longevity Determinants of Embroidery Enterprises in Taal, Batangas, Philippines

Divine Krizza B. Padua,Jewel Joanna S. Cabardo,Jeanette Angeline B. Madamba,Jimmy B. Williams 강원대학교 경영경제연구소 2016 Asia-Pacific Journal of Business Vol.7 No.1

The study specifically aimed to identify factors affecting business longevity. It focused on knowing how embroidery enterprises managed to persist in the industry for many years despite the competitive business environment. After discovering the significant relationships of such factors to longevity, problems experienced by the enterprise cluster were ascertained in order to come up with recommendations that can be proposed to the enterprise owners. Embroidery entrepreneurs have been experiencing a continuous decline in sales due to lack of innovation and intense competition. In the evaluation of their personal entrepreneurial competencies, they scored low on risk-taking, persuasion and networking, and opportunity seeking; thus, implying that these are their weaknesses. On the other hand, the statistical results of this study say that longevity is a function of the entrepreneur’s competencies (i.e., persistence, commitment to work contract, demand for quality and efficiency, information seeking, and systematic planning or monitoring), the generation currently managing the business, competition, and the customer’s preferences. These results suggest that these independent variables are significant and are deemed critical to business longevity. Thus, entrepreneurs have to find ways on how to use these competencies as an advantage in reinventing their businesses and in reviving their industry.

Decolorization of triarylmethane dyes, malachite green, and crystal violet, by sewage sludge biochar: Isotherm, kinetics, and adsorption mechanism comparison

Divine Damertey Sewu,이대성,우승한,Dimitrios Kalderis 한국화학공학회 2021 Korean Journal of Chemical Engineering Vol.38 No.3

Sewage sludge biochar (SBC) was used as adsorbent to study the adsorption behavior of triarylmethane dyes, malachite green (MG; diaminotriphenylmethane), and crystal violet (CV; triaminotriphenylmethane). SBC exhibited high content (g/kg) of Al (65.8), P (64.6), Ca (57.3), and Fe (44.6). The Langmuir model showed that the affinity of MG for the surface of SBC was 22.6-times that of CV’s (KL=0.0053 l/mg); maximum Langmuir monolayer adsorption capacity of 69.5 mg/g for MG and 49.0 mg/g for CV. Similar functional groups and adsorption mechanisms like hydrogen bonding, π-π interaction, electrostatic interactions, and ion exchanges governed both MG and CV adsorption onto SBC. Both physisorption and chemisorption were involved in both dyes’ adsorption (Redlich-Peterson model: R2 > 0.900) Leachability tests showed a dependency of leached metallic ions on the type of dye employed, where ion exchange was dominated by P, Al, Ca, K for MG, and Na, K, Ca for CV. Interestingly, although minimal, the standalone contribution of biochar-free ions on MG and CV decolorization was, respectively, 13% and 7.7% (Fe), 6.7% and 2.3% (K), 2.9% and 0% (Ca), and 0% and 0.8% (Mg), which showed that some adsorption-unrelated mechanism may have also contributed to decolorization of CV and MG.

Longevity Determinants of Embroidery Enterprises in Taal, Batangas, Philippines

Padua, Divine Krizza B.,Cabardo, Jewel Joanna S.,Madamba, Jeanette Angeline B.,Williams, Jimmy B. KNU The Institute of ManagementEconomy Research 2016 Asia-Pacific Journal of Business Vol.7 No.1

The study specifically aimed to identify factors affecting business longevity. It focused on knowing how embroidery enterprises managed to persist in the industry for many years despite the competitive business environment. After discovering the significant relationships of such factors to longevity, problems experienced by the enterprise cluster were ascertained in order to come up with recommendations that can be proposed to the enterprise owners. Embroidery entrepreneurs have been experiencing a continuous decline in sales due to lack of innovation and intense competition. In the evaluation of their personal entrepreneurial competencies, they scored low on risk-taking, persuasion and networking, and opportunity seeking; thus, implying that these are their weaknesses. On the other hand, the statistical results of this study say that longevity is a function of the entrepreneur's competencies (i.e., persistence, commitment to work contract, demand for quality and efficiency, information seeking, and systematic planning or monitoring), the generation currently managing the business, competition, and the customer's preferences. These results suggest that these independent variables are significant and are deemed critical to business longevity. Thus, entrepreneurs have to find ways on how to use these competencies as an advantage in reinventing their businesses and in reviving their industry.

Synergistic dye adsorption by biochar from co-pyrolysis of spent mushroom substrate and <i>Saccharina japonica</i>

Sewu, Divine Damertey,Boakye, Patrick,Jung, Hwansoo,Woo, Seung Han Elsevier 2017 Bioresource technology Vol.244 No.1

<P><B>Abstract</B></P> <P>The potential of activating terrestrial biomass (spent mushroom substrate, SMS) with ash-laden marine biomass [kelp seaweed, KE] via co-pyrolysis in the field of adsorption was first investigated. KE biochar (KBC), SMS biochar (SMSBC), biochar (SK10BC) from 10%-KE added SMS, and biochar (ESBC) from KE-extract added SMS were used for the adsorption of cationic dye crystal violet (CV). ESBC had highest fixed carbon content (70.60%) and biochar yield (31.6%). SK10BC exhibited high ash content, abundant functional groups, coarser surface morphology and Langmuir maximum adsorptive capacity (610.1mg/g), which is 2.2 times higher than that of SMSBC (282.9mg/g). Biochar activated by a small amount of high ash-containing biomass such as seaweed via co-pyrolysis can serve as viable alternative adsorbent for cationic dye removal.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Biochar was produced via co-pyrolysis of spent mushroom substrate and seaweed kelp. </LI> <LI> Crystal violet (CV) was effectively removed by kelp and co-pyrolysed biochars. </LI> <LI> CV adsorption is influenced by the functional groups and ash contents. </LI> <LI> The CV adsorption synergy increased by a factor of 2.2 after co-pyrolysis. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>

Decolorization of cationic and anionic dye-laden wastewater by steam-activated biochar produced at an industrial-scale from spent mushroom substrate

Sewu, Divine Damertey,Jung, Hwansoo,Kim, Seung Soo,Lee, Dae Sung,Woo, Seung Han Elsevier 2019 Bioresource technology Vol.277 No.-

<P><B>Abstract</B></P> <P>The feasibility of producing biochar and its steam-activated counterpart in a large scale (1000 kg) from spent mushroom substrate (SMS) and their usage as effective environmental remediation tools to augment current SMS management strategies were explored. Steam-activated SMS biochar exhibited enhanced surface area (332 m<SUP>2</SUP>/g), pore volume (0.29 cm<SUP>3</SUP>/g), and porosity (77.1%). The effectiveness of activation was higher on the cationic dye, crystal violet (CV) by 4.1 times increase from 255 mg/g to 1057 mg/g. The biochar and its steam-activated counterpart, respectively exhibited high COD and color removal efficiencies of 49.6% and 40.1%, and 67.7 and 99.6% for CV-spiked real wastewater. Reusability studies confirmed the dominant role of chemisorption in the adsorption process. The lower production cost coupled with the superior physicochemical properties and adsorption performances rendered the biochar with/without steam activation, as a promising alternative adsorbent to serve as a green, viable and effective environmental remediation tool.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Spent mushroom substrate biochar was produced at an industrial-scale at 450 °C. </LI> <LI> Steam activation of the spent mushroom substrate biochar (SA-BC) was undertaken. </LI> <LI> BET surface area, pore volume, and porosity increased after steam activation. </LI> <LI> Biochar hydrophilicity remained unaltered after steam activation. </LI> <LI> SA-BC is among highest reported crystal violet adsorption capacities in literature. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>

Highly efficient adsorption of cationic dye by biochar produced with Korean cabbage waste

Sewu, Divine D.,Boakye, Patrick,Woo, Seung H. Elsevier 2017 Bioresource technology Vol.224 No.-

<P><B>Abstract</B></P> <P>Biochar was produced from Korean cabbage (KC), rice straw (RS) and wood chip (WC) and the use as alternative adsorbents to activated carbon (AC) in wastewater treatment was investigated. Congo red (CR) and crystal violet (CV) were used as a model anionic and cationic dye, respectively. Initial solution pH had little effect on CR and CV adsorption onto all biochars except for AC on CR. The isotherm models and kinetic data showed that adsorption of CR and CV onto all biochars were dominantly by chemisorption. All biochars had lower adsorption capacity for CR than AC. KC showed higher Langmuir maximum adsorption capacity (1304mg/g) than AC (271.0mg/g), RS (620.3mg/g) and WC (195.6mg/g) for CV. KC may be a good alternative to conventional AC as cheap, superb and industrially viable adsorbent for removal of cationic dyes in wastewater.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Biochars were produced from rice straw, wood chip, and Korean cabbage. </LI> <LI> The adsorptive performance of the biochars was compared with activated carbon. </LI> <LI> Congo red (anionic) and crystal violet (cationic) were used as model dyes. </LI> <LI> Ash content and functional group control crystal violet adsorption onto biochars. </LI> <LI> Korean cabbage biochar adsorbs crystal violet 4.8 times more than activated carbon. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>

Phenotypic Diversity of Shea(Vitellaria Paradoxa C. F. Gaertn.) Populations across Four Agro-Ecological Zones of Cameroon

Nafan, Diarrassouba,Divine, Bup Nde,Cesar, Kapseu,Christophe, Kouame,Abdourahamane, Sangare The Korean Society of Crop Science 2007 Journal of crop science and biotechnology Vol.10 No.4

Vitellaria paradoxa commonly called shea is an important agro forestry and fruit-bearing species present in four agro-ecological zones of Cameroon. The goal of this work was the morphological characterization of certain populations of V. paradoxa which will serve as a necessary step for a subsequent genetic study of the species. Morphological observations related to 20 agronomic traits, studied on 8-13 trees selected from each of the eight shea populations across four different agro-ecological zones located in four provinces of Cameroon were studied. The study showed that there was a variation between the populations, related to the traits measured on the trunk, fruit, nut, and leaf. Three shapes of the tree(ball, broom, and trained), five shapes of the fruit(round, oblong, reversed pear, ovoid, and oblong), three colors of the nut(clear brown, dark brown, and blackish brown) were identified. The principal component analysis(PCA) carried out on the quantitative characters revealed 72% of the total variance expressed on the first and second main axis. This variation was essentially explained by the traits measured on the fruits and on the nuts. The analyses showed that only the traits of the fruits and the nuts were discriminative. The shea populations studied were structured into two distinct groups using these discriminative traits.

Extraction of inorganic materials from fresh and dried alga <i>Saccharina japonica</i>

Boakye, Patrick,Sewu, Divine D.,Woo, Hee Chul,Choi, Jae Hyung,Lee, Chul Woo,Woo, Seung Han Elsevier 2017 Journal of environmental chemical engineering Vol.5 No.5

<P><B>Abstract</B></P> <P>Extraction of minerals from fresh and dried macroalgae kelp (<I>Saccharina japonica</I>) was investigated to get better biomass resource for biorefinery. At a solid to liquid ratio of 1:6 (w/v), 2h extraction, and 30°C, inorganic extraction efficiency (<I>E<SUB>inorg</SUB> </I>) and total efficiency (<I>E<SUB>tot</SUB> </I>) using water were respectively 76.88 and 50.82% for fresh biomass while those of dried biomass were 72.99 and 65.79%. For fresh biomass extraction using ethanol, <I>E<SUB>inorg</SUB> </I> (74.19%) and <I>E<SUB>tot</SUB> </I> (42.21%) were much higher than for dried biomass with 7.29% <I>E<SUB>inorg</SUB> </I> and 1.21% <I>E<SUB>tot</SUB> </I>. With 10% ethanol, <I>E<SUB>inorg</SUB> </I> were similar for both materials, however, higher ratio of inorganic to organic extraction efficiency (<I>r<SUB>E</SUB> </I>) (5.48) were obtained for fresh biomass compared to lower <I>r<SUB>E</SUB> </I> (2.02) for dried biomass. The <I>r<SUB>E</SUB> </I> for fresh biomass was higher (13.80) than that for dried biomass (1.32) using water at 1:4 solid to liquid ratio, suggesting that fresh kelp is better feedstock for bioenergy production.</P>