bluuebunny/crossref_metadata_2025 huggingface dataset:
Impact of IFRS Adoption and Value Relevance of Accounting Quality on Listed Firms in Nigeria
Authors: Zubairu Ahmad Alhaji , M. Kwanbo Lubabatu , Usman Abbas
Published: January 2021

This study concentrated on evaluating the value relevance of accounting quality in Nigeria both before and after the mandatory adoption of IFRS as a reporting standard for the period of two (2) years (2011-2012) using annual reports of the whole (108) companies quoted on Nigerian stock exchange with exclusion to companies that operate in financial services sector of the market, criteria were used to arrive at the sample of 91 listed firms, Secondary data and Ordinary least Square (OLS) was engaged in analyzing the data extracted for this study, using STATA 13, Analysis was done using Pre IFRS and Post IFRS, the study discovered that value relevance of accounting quality is higher in the post-IFRS adoption period compared to that of the pre-adoption period. The study recommended that other developing nations should adopt IFRS as their financial reporting standard since it is accomplished of increasing their value relevance of accounting quality.
The Effects of Reward System on Employee Performance
Authors: Noorazem Nurul Asyiqin , Md Sabri Sabiroh , Mat Nazir Eliy Nazira
Published: January 2021

Reward system which consists of financial rewards and non-financial rewards has become essential to an organization in managing employees’ performance. Motivated employees can be a significant factor in organizational success. When employees are motivated to work at higher levels of productivity, the organization as a whole will run more efficiently and is more effective at reaching its goals. Literature review on the previous studies has proven that the reward system can motivate and subsequently increase employees’ performance. Reward system comes in many forms, for example, intrinsic rewards and extrinsic rewards. Thus, the organization must critically understand what types of reward system can motivate the employee to perform well in their job. The purpose of this research is to investigate the effects of the reward system in an organization on employee performance. The variable tested in this study includes salary, bonuses, appreciation and medical benefits. This study adopted a quantitative approach where 132 sets of questionnaires were distributed to the participants selected using convenience sampling. Data were then analyzed using SPSS software and a few analyses were carried out such as correlations analysis and regression analysis. The results show that all variables have a significant impact on employees’ performance. The results of this study can be used by the organization to improve its reward system and to ensure it could help in increasing the employees’ performance.
Factors Influencing Intention to Become Agropreneur Among Youths
Authors: Ambad Sylvia Nabila Azwa , Sumin Viduriati , Karia Abdul Aziz , Abdul Hakim Taufik , Albert Gisip Imelda
Published: January 2021

The objective of this research is to examine the relationship between Realistic, Investigative, Artistic, Social, Enterprising, and Conventional (RIASEC), and Shapero’s Entrepreneurial Event Theory (SEET) on the youth’s intention to be involved in agropreneurship. The data were collected by the self-reported in-person and electronic questionnaires from 269 youth in Sabah, Malaysia. The results revealed that realistic, investigative, enterprising and SEET plays a significant role in agropreneurship intention. Research on agropreneurship is still lacking, and to date, only a few studies have been published. The findings of this study enrich the existing literature, especially in Malaysia’s context. At the same time, this study assists the government and its agencies to identify and strengthen youth participation in the agriculture sector.
Assessing Customer Satisfaction Towards Service Quality in the Hospitality Industry
Authors: Omar Ali Siti Rapidah , Norizan Siti Norsuhaizam , Mohd Said Nur Shafini , Mat Khalid Amin , Jislan Fatanah
Published: January 2021

It is proven true that the main subjects addressed by every service industry nowadays are service quality and customer satisfaction. Hence, virtuous customers’ evaluation of services is crucial for the firms. Delivering good quality service is leading to attain today’s competitive environment. This study attempts to assess the relationship between service quality and customer satisfaction in the hotel industry in Malaysia. SERVQUAL model of service quality has been used to measure the relationship between three independent variables namely Tangibility, Reliability and Responsiveness and a dependent variable that is customer satisfaction. A number of 217 hotel guests in a three-star hotel in Kuala Terengganu were selected as a sample by using a convenience sampling method. The questionnaire was used as a research instrument in a survey approach. The findings indicated that all three dimensions of service quality have a positive relationship with customer satisfaction. Responsiveness seems to be the most significant factor in satisfaction. This study contributes to the enhancement and standardization of service quality management in firms especially the hotel industry in Malaysia. The findings would offer better understanding and recommendations for hotel management transformation and practices.
An Addressing on Risk of Mental Health Disorders Through Hybrid Takaful (Islamic Insurance): A Case of Malaysia
Authors: Khairi Khairil Faizal , Laili Nur Hidayah , Kamarubahrin Aimi Fadzirul
Published: January 2021

In addition to heart disease, other Malaysian extensive illnesses are mental health disorders. 29.2 per cent of Malaysians have recently suffered from mental illness, which has increased threefold compared to the previous year. The lowest income group accounts for the bulk of Malaysians suffering from mental illness. Currently, Singapore list among the countries has operative providing mental health insurance together with Australia, the United Kingdom and the United States of America. Malaysia is still far behind on offering mental health coverage with such a scheme only provided by AIA Malaysia. Therefore, through the takaful product, the purpose of this study is to address the risk of mental health disorders by hybrid takaful. The paper concluded that in order to maintain the promoting coverage and minimizing damage to mental health patients to human well-being, takaful mental health is needed in Malaysia market. In addition, this research would provide insight into the takaful industry for the development of a new and competitive product that could assist patients with a mental health disorder.
Mnemonics: An Alternative Memory Enhancement Technique in Teaching Accounting Theories
Authors: Mohd Rodzi Nor Kartini , Abdul Rahman Norshimah , Naiimi Nazirah , Ahmad @Muhammad Norizam , Ayob Susilawani , Selamat Salwana
Published: January 2021

It is a belief that mnemonic will increase students’ understanding and thus, foster their academic performance. This study investigated the effectiveness of using mnemonics in teaching accounting theories for an intermediate financial accounting course. A sample of 96 accounting students enrolling the financial reporting course was chosen to take part in this study. The selected students were separated into 2 groups: M1 was with mnemonic training and M0 was without mnemonic training. The findings revealed that mnemonic is an effective technique in teaching accounting theories and enhancing student's ability to envisage and remember accounting concepts and theories. This is reinforced from finding that the average score index for students with mnemonic training was 4.985 higher than those without mnemonic training. In addition, the p-value for the dummy variable mnemonic training (p=.000) was very significant, suggesting that there was statistical evidence of a difference in average score index between the students with a mnemonic and no mnemonic training.
The Role of Education Support in Enhancement of Entrepreneurial Intentions Amongst Undergraduates in Malaysia
Authors: Esther Tan Karen , Ambad Sylvia @ Nabila Azwa , Nordin Sakka , Andrew Jasmine Vivienne , Abdullah Nur Syahidah Wong
Published: January 2021

Entrepreneurship has long been a topic of interest for many researchers. The economy being volatile has impeded job opportunities for many, particularly amongst youths. In Malaysia specifically, where unemployment has been increasing over the years, measures have been taken by the government to promote entrepreneurship to youth and undergraduates to make them more entrepreneurially inclined. Despite the numerous incentives and programs by the government to encourage youth to be entrepreneurial inclined, the unemployment rate is still high in many countries, particularly Malaysia. This research aims to offer a systematic literature review on the growing role of education support in promoting entrepreneurial intention amongst undergraduates in Malaysia. This research will highlight the increasing importance of education in fostering entrepreneurial intentions amongst undergraduates in Malaysia over the last five years. Through the compilation of past literature and research, this study aims to contribute to entrepreneurship research by discussing the impact of education support as well as highlighting ongoing discussions on education support in nurturing undergraduate entrepreneurial intention.
A Systematic Review of E-wallet Usage Intention: Integrating UTAUT2 with Perceived Security
Authors: Andrew Jasmine Vivienne , Ambad Sylvia @ Nabila Azwa , Abdullah Nur Syahidah Wong , Nordin Sakka , Esther Tan Karen
Published: January 2021

The growth of cashless payment has grown exponentially, including that of e-wallet, in line with the government's plan to build a cashless society. The e-wallet phenomenon is fast becoming an important component for financial inclusion in emerging economies as studies found that the use of digital financial services like mobile money and other fintech applications could provide many potential development benefits. Countries like China have experienced the highest growth in cashless payments over the last five years and is said to be the most educated on mobile payment services. Despite the rapid development of this technology, organizations and consumers are still concerned about rising security issues. As the e-wallets markets are further expected to increase exponentially in Malaysia, it is crucial to study the consumers' behavioral intention to use e-wallets for the benefits of e-wallets service providers and users in Malaysia. Correspondingly, this paper presents a review of the literature aimed at advancing the body of knowledge by proposing a conceptual model on consumers' behavioral intention to use e-wallet (mobile payment) using UTAUT2 as a baseline model. This paper is built upon a systematic literature review method. This paper provides practical implications that would assist e-wallet service providers when devising appropriate strategies in planning and increasing consumers' intention to use the e-wallet.
Does University Students Prefer Printed Reference Book Over Online Materials? A Case Study of Private Higher Learning Institution
Authors: M.H. Mustafa , S.I. Mohd , H. Haron
Published: January 2021

The sole purpose of a resource centre or library in any higher education institution is to enhance a learning environment and support teaching, learning and research activities. Over the years, higher education institutions keep on increasing their possession of reference material in them of reference materials in their libraries for the use of students, academics and staff that include both printed and online materials. Due to this fact, it is a goal of every library to ensure that those materials are fully utilized by its users. However, with the growth of electronic facilities and resources in libraries, it is time to determine the factors that influence users’ library materials preference. This study adopts a descriptive research design with survey samples from the Universiti Teknologi PETRONAS. Our study reveals that users’ perceived usefulness and perceived ease of use play a crucial role to influence their intention to choose a library resource format where attitude fully mediates the relationship between these variables. This study also identified a partial mediating effect of desire between users’ attitudes and intentions. It also found that organizational characteristics have a significant effect on users’ perceived usefulness and perceived ease of use. Overall, by focusing on the underlying mechanisms of the theories TAM, TPB, and TSR in library resource format choosing behaviour context this study proposes an integrated model, contributes to both theories, and practices in library management.
Graduate Employability and Digital Entrepreneurship in the Era of IR 4.0
Authors: Nayan Surina , Shafie Latisha Asmaak , Chulan Majdah , Zakaria Fazmawati , Nayan Suhaimi
Published: January 2021

This is a conceptual paper on virtual entrepreneurship that can be ventured by graduates in Malaysia in the IR 4.0 era.  The study defines what virtual entrepreneurship is, its advantages, reviews of some literature on the topic, IR 4.0 and its effects to Malaysian businesses in general.  Besides, the paper also focuses on types of virtual entrepreneurship that Malaysian graduates can explore.  They can venture into cyber-security analyst positions, can produce and innovate IoT tools and solutions, be online retail consigners, can be content creators for Instagram, Twitter and Facebook for companies that need their services, can do freelance copywriting and editing for new companies or traditional companies, can become social media influencers, can become YouTube personalities, can assume the role of digital strategy experts and they can also offer digitalized services and solutions. As a result, they will not depend a lot on working with the government or private sector.  It is a well-known fact that getting a job in an office is difficult nowadays. They can find their own income to continue supporting their lives in today’s challenging world when they are aware of the opportunities offered to them using the virtual world. They can actually venture into areas that do not require them to commute to their offices every day.  Instead, they can just work in front of their laptop or pc or tab which is connected to the internet. Furthermore, they themselves can create other job opportunities for others.
Modelling Financial Wellbeing Among Young Employees in Malaysia During Movement Control Order (MCO)
Authors: Abdull Rahman Nurul Labanihuda , Ahmad Shafiai Noor ‘Izzati
Published: January 2021

Financial wellbeing is important for individuals to have a better life which is achievable by managing their personal finance. In fact, due to the Covid-19 pandemic, Malaysia has witnessed the loss of employment among young employees. Previous research relating to financial wellbeing has focused on the factors which are financial literacy and financial problems towards financial wellbeing. However, financial capability and work environment were not much explored. Therefore, this research will target young employees aged 20-40 who are affected during Movement Control Order (MCO) in the Northern Area. This paper presents the factors that will be examined and several issues on the inconsistent results from previous studies. The findings from this study are important to identify which determinant gives impact to the financial wellbeing and faced by young employees in Malaysia. Furthermore, employers will gain additional information regarding their employees’ financial situation and able to overcome their difficulties. The government will also be able to provide financial assistance or job placement for young employees who are affected by this financial constraint in their life.
The Existence of Behavioral Biases and Personality Traits in Explaining the Effect of Fundamental and Technical Analysis to Investment Performance in Indonesia Stock Exchange
Authors: Loebiantoro Ika Yanuarti , Eaw H.C. , Annuar Nursyamilah
Published: January 2021

Rational investors focus on the fundamental and technical analysis in their investment decisions. In fundamental analysis, they consider economic conditions, industry analysis, and company analysis if they use a top-down approach, and vice versa if they use a bottom-up approach. Technical analysis focuses on the historical movement of stock price to predict the future price by using the pattern of a chart. However, in modern finance, investors are not fully rational as they are also affected by the psychological factors when making their investment decisions. These psychological factors then create behavioral biases, which becomes the basic assumption of behavioral finance This research is aimed at investigating the role of availability bias and disposition effect as behavioral biases that make investors irrational in their behaviors and whether it is supported by the Big Five Personality Traits, which include openness, conscientiousness, extraversion, agreeableness, and neuroticism (OCEAN). It needs to explore the influence of fundamental analysis and technical analysis on investment performance with the existence of behavioral biases as mediating variable and personality traits as a moderating variable between fundamental analysis and behavioral biases.
Open Government Data (OGD) Publication as Linked Open Data (LOD): A Survey
Authors: Bouchelouche Khadidja , Ghomari Abdessamed Réda , Zemmouchi-Ghomari Leila
Published: January 2021

Open Government Data (OGD) is a movement that has spread worldwide, enabling the publication of thousands of datasets on the Web, aiming to concretize transparency and citizen participatory governance. This initiative can create value by linking data describing the same phenomenon from different perspectives using the traditional Web and semantic web technologies. A framework of these technologies is linked data movement that guides the publication of data and their interconnection in a machine-readable means enabling automatic interpretation and exploitation. Nevertheless, Open Government Data publication as Linked Open Data (LOD) is not a trivial task due to several obstacles, such as data heterogeneity issues. Many works dealing with this transformation process have been published that need to be investigated thoroughly to deduce the general trends and the issues related to this field. The current work proposes a classification of existing methods dealing with OGD-LOD transformation and a synthesis study to highlight their main trends and challenges.
Reuse Alternatives based on the Sources of Software Assets
Authors: AL-Badareen Anas
Published: January 2021

Abstract— Since the idea of software reuse appeared in 1968, software reuse has become a software engineering discipline. Software reuse is one of the main techniques used to enhance the productivity of software development, which it helps reducing the time, effort, and cost of developing software systems, and enhances the quality of software products. However, software reuse requires understanding, modifying, adapting and testing processes in order to be performed correctly and efficiently. This study aims to analyze and discuss the process of software reuse, identify its elements, sources and usages. The alternatives of acquiring and using software assets either normal or reusable assets are discussed. As a result of this study, four main methods are proposed in order to use the concept of reuse in the software development process. These methods are proposed based on the source of software assets regardless the types of software assets and their usages.
Georgy Ivanov on the “Vial of Poison” by Konstantin Leontiev
Authors:   Lomonosov Moscow State University, Solntseva Natalia
Published: January 2021

The article is devoted to the analysis of G. Ivanov’s judgments about K. Leontiev. The sharpness of Ivanov’s statements is explained by the similarity of Leontiev’s views with the ideology of a new generation of emigrants, including members of the fairly mass party of “mladorosses” (young Russians). From the point of view of Ivanov, Leontiev’s political convictions in many ways contain a danger for the formation of the worldview of contemporaries. Leontiev’s idea that liberal-egalitarian progress would lead to the collapse of the Empire was combined with his belief in the possibility of protective socialism in Russia and a socialist monarch, blessed by the Church. The “mladorosses” were social monarchists who believed that with the older generation of Bolsheviks leaving the political arena, Bolshevism would come to an end; they saw the Soviets without the Bolsheviks as a promising form of self-government. In the political activization of the younger generation of emigrants, their way of thinking, Ivanov was not satisfied with the opposition to the ideals of the old emigration. He considered the ideas of the “new Russian people” contradictory and illusory, and expressed his beliefs in a number of articles. The deceptive hope of emigrants for the Soviets without the Bolsheviks is the motif of the famous poem “The way is Free under Thermopylae...” Ivanov created a complex, contradictory portrait of Leontiev; he is partly close to the opinion of N. Berdyaev, S. Bulgakov, V. Rozanov in his assessments of Leontiev’s human qualities and judgments.
The Plot of Leonid Andreevʼs “The Abyss” as a Bifurcation in a Literary Work?
Authors:   Masaryk University (Brno), University of ss. Cyril and Methodius (Trnava), Dohnal Josef
Published: January 2021

The article analyses the development of the plot of the story by Leonid Andreev “The Abyss”, paying particular attention to the changes taking place in the internal structure of the “self” of the main character of the story, understood as a non-equilibrium system. A number of external impulses, initiated from the outside, causes gradually so powerful fluctuations that the character’s “self” undergoes a process of restructuring, which reveals until then hidden, unknown, primitive composite only partly overlaid by cultural memes.
Digital Portrait of the Last Pechora Scribe
Authors:   Lomonosov Moscow State University, Alpatov Sergey , Kaneva Tatyana ,   Pitirim Sorokin Syktyvkar State University
Published: January 2021

The article examines the typical problems of representing oral and handwritten forms of traditional culture in digital format using the example of a new electronic resource dedicated to the last Pechora writer and copyist of ancient manuscripts S.A. Nosov.
Italy and Provence: Cultural Connections in the Middle Ages
Authors:   Moscow State University of International Relations (MGIMO University), Grinina Elena , Romanova Galina ,   Moscow State University of International Relations (MGIMO University)
Published: January 2021

The Provencal language and lyrics of troubadours had the highest authority in the Middle Ages, having influenced the development of poetic art, in particular, and the development of philological thought, in general, in adjacent territories. Undoubtedly, there were the closest ties of medieval Provence with Catalonia. However, Italy was also involved in the orbit of the cultural life of Provence. The purpose of the article is to show how Italy and Provence were connected in the 13th century and to what extent Italy contributed to the development and preservation of the grammar of the Provencal literary language of that era.
Two Serbian Тravelogues about Soviet Russia
Authors:   University of Belgrade, Petrović Predrag
Published: January 2021

The paper presents two Serbian travelogues published in 1928 in Belgrade: Impressions from Russia (Утисци из Русије), by the writer Dragiša Vasic and Impressions from Russia (Импресије из Русије) by the sculptor Sreten Stojanovic. On the occasion of marking the tenth anniversary of the October Revolution, Vasic and Stojanovic, as journalists, had the opportunity to spend two months in Moscow and Leningrad. Driven by great respect and love for Russian culture, they wanted to acquaint the Serbian public with the social, political and cultural life in the new state. Both travelogues emphasize the image of Soviet society in which there are still conflicts between traditional and new values that are gradually but surely being established. The authors pay great attention to the Russian art of that time, primarily to the theater. Both travelogues are important literary and documentary evidence of the image of Soviet Russia that was formed in the Serbian cultural public in the period between the two world wars.
Travma sonrası gelişim perspektifinden gelişimsel eğride yeni bir kuşak olarak COVID-19
Authors: ERMİŞ Ece Naz , BAYRAKTAR Seda
Published: January 2021

Bu derleme çalışmasının amacı; pandemi sürecinin farklı gelişim dönemleri üzerinde etkilerini travma sonrası gelişim kapsamında ortaya koymaktır. Konu ile ilgili makalelere ulaşmak için COVID-19 ve çocukluk, ergenlik, yetişkinlik, beliren yetişkinler, yaşlılık, travma sonrası büyüme ve gelişim gibi anahtar kelimeler ile Pubmed, Scholar Google, Science Direct arama motorlarında 2020 tarihi ile birlikte tarandı. Bu derleme çalışması araştırmaya dahil edilme kriterlerine uyan 38 makale ele alınarak hazırlanmıştır. Bu değerlendirmede yapılan araştırmalarda her yaş dönemi için pandemi sürecinin olumlu sonuçları olduğuna ilişkin bulgular gözlense de daha çok olumsuz bulguların öne çıktığı saptanmıştır. Kuşaklararası etkileşimlerin arttığı ve ilişkilerin bu dönemde yeniden yapılanması söz konusu hale gelmiştir. COVID-19 süreci ilerleyen yıllarda farklı yaş gruplarını olumlu ya da olumsuz etkileyebilecek bir deneyim olarak görülmektedir.
Situação geomorfológica dos sítios arqueológicos no município de Camalaú – Paraíba
Authors: Azevedo Netto Carlos Xavier de , Rodrigues Rosa Conrad , Fonseca de Souza Thiago
Published: January 2021

O meio físico nos permite compreender a paisagem e as formas, processos de ocupação de grupos pretéritos. Na perspectiva da Geoarqueologia, o ser humano apreende o espaço conforme o uso do meio físico modificando-o, com a adaptação e processos de manufatura de instrumentos a e formação de sítios, o que implica em transformação e transição cultural. O artigo organiza informações dos assentamentos pré-coloniais de Camalaú. Metodologia de caracterização geoarqueológica, elaboração de SIG e execução de cartas temáticas. Possibilita perceber as estratégias de ocupações, que levam em consideração as formas de relevo e a posição geográfica em relação ao Norte magnético. Essas escolham permitem a compreensão das estratégias de ocupações pré-coloniais nos Cariris Velhos.
Arqueozoologia do sítio Rio do Meio (SC)
Authors: Gilson Simon-Pierre , Lessa Andrea
Published: January 2021

Os restos faunísticos identificados no sítio raso Rio do Meio oferecem uma perspectiva sobre aspectos do modo de vida dos grupos pré-coloniais do litoral sul do Brasil. Dados relativos ao número de restos, número mínimo de indivíduos e biomassa foram analisados sob perspectivas diacrônicas e sincrônicas. A dieta e outros aspectos atrativos em relação aos recursos, assim como sazonalidade, perfil dos recursos explorados, técnicas de captura dos animais e características dos ambientes explorados foram discutidas de forma integrativa. Os peixes teleósteos representam 97,2% dos restos identificados, seguidos pelos tubarões com 1,8%. A ordem de importância entre as duas categorias se inverte no valor total da biomassa: tubarões 54,6% e peixes 36,7%. Os dados indicam que o assentamento estava organizado para a exploração regular e intensiva do ecossistema da baía Norte.
Sobre arqueologias da escravidão e da liberdade
Authors: Costa Diogo Menezes
Published: January 2021

O que é, hoje, o normal? Quando olhamos para um passado agora distante, vemos o reflexo de um futuro que ainda acontece no nosso cotidiano. É assim que nos sentimos ao acompanhar uma obra de referência como o livro organizado por Luis Cláudio Pereira Symanski e Flávio dos Santos Gomes, intitulado Arqueologias da Escravidão e Liberdade: Senzalas, Cultura Material e Pós-Emancipação na Fazenda do Colégio, Campos dos Goytacazes, Séculos XVIII a XX; editado pela recente Brazil Publishing, no ano de 2019. O livro é um estudo muito bem organizado sobre os resultados de várias pesquisas arqueológicas e históricas sobre um mesmo objeto de estudo, a fazenda do Colégio dos Jesuítas. Esse sítio foi o principal empreendimento escravagista no norte canavieiro fluminense que manteve em cativeiro cerca de duas mil pessoas até o último quartel do século XVIII.
Mini aspirador adaptado para coleta de microrresíduos em objetos arqueológicos
Authors: Alves dos Reis Ricardo França , Mendonça de Souza Sheila Maria Ferraz
Published: January 2021

A coleta de microrresíduos depositados em artefatos arqueológicos é de grande interesse científico para análises bioquímicas, biológicas e sedimentológicas. Mas tais artefatos podem apresentar superfícies irregulares e de difícil acesso, nas quais coletar amostras pode ser difícil ou impreciso. A adaptação de um mini aspirador equipado com extremidades adequadas à coleta em áreas pontuais de superfícies e orifícios estreitos, foi a solução encontrada pelos autores. O uso desse equipamento foi testado em estudo de fungos em múmias da coleção Egípcia do Museu Nacional, ocasião em que assegurou coletas rápidas, eficientes e sem contaminação cruzada, como comprovado na referida pesquisa. O equipamento mostrou-se também econômico, de fácil transporte e manuseio, aplicando-se ao laboratório e ao campo, como demonstrado no presente artigo.
Revisitando análises de cerâmicas no sul e sudeste brasileiro
Authors: Perez Glauco Constantino , Pezzi Rasteiro Renan , Terhaag Merencio Fabiana , Müller Isabela da Silva
Published: January 2021

Este artigo revisita estudos específicos realizados nos últimos anos, selecionados com o intuito de compreender como os pesquisadores realizaram as análises em cerâmica arqueológica brasileira, sendo este um dos principais marcadores culturais conhecidos na disciplina. Para tanto, realizamos um levantamento bibliográfico com intuito de reunir trabalhos realizados nessa temática. O levantamento identificou a autoria e os métodos da análise cerâmica aplicados. Isso nos permitiu rastrear quais métodos foram utilizados para a análise de cerâmica e, por sua vez, o viés interpretativo ligado aos trabalhos. Esperamos que a partir deste artigo a comunidade científica se atente para os métodos aplicados à pesquisa, com o intuito de aprofundar as análises e permitir novos tipos de inferências sobre as populações ceramistas.
Processos de formação e processos antrópicos no abrigo de Itapeva/SP
Authors: Souza Tatiane de , Porto Vagner Carvalheiro
Published: January 2021

O estudo da micromorfologia do solo é uma ferramenta útil para detectar materiais arqueológicos que os arqueólogos não conseguem avistar nas escavações. O objetivo deste artigo é revelar vestígios de ocupação humana a partir de uma análise micromorfológica. Os resultados são derivados da produção de seções delgadas que descrevem materiais de duas áreas diferentes do sitio, denominadas unidades de escavação D18 e G6, referentes às áreas norte e sul, e apontam para a existência de um solo antropogênico com formação de fogueiras. Conclui-se que o sedimento formado é uma mistura de areia, cinza, madeira e argila, que foi depositado em longos períodos e é derivado da ocupação humana e da deposição natural.
Acervos arqueológicos musealizados e gestão no MAnA-UFU
Authors: Rodrigues Robson , Mano Marcel , Ferreira Filho Aurelino José
Published: January 2021

Acervos arqueológicos resultantes dos resgates realizados nas décadas de 1980-90, na bacia do rio Araguari, Minas Gerais, se constituem em uma expressiva coleção que não recebeu tratamento e destinação adequados. Um grande esforço coletivo está permitindo, porém, a realização de algumas reflexões dessa coleção em relação a um trabalho transdisciplinar para a constituição do MAnA-UFU. Para ilustrar esse esforço, neste artigo o exercício será de, por um lado, cotejar parte desse material com fontes documentais; e, por outro, indicar os possíveis diálogos e apropriações de acervos musealizados por parte das populações indígenas atuais. Se bem-sucedida, essa tentativa abrirá possibilidades de pesquisas, gestão e guarda desse acervo na perspectiva dos diálogos, num movimento que gera elementos e sentimentos de pertencimento.
Entre os vivos e os mortos
Authors: Souza de Lima Jelly Juliane , Gomes Denise Maria Cavalcante
Published: January 2021

Este artigo apresenta uma discussão acerca das atitudes dos vivos em relação aos mortos, com base na análise dos artefatos cerâmicos e seus arranjos espaciais, indicadores de rituais funerários relacionados aos sítios arqueológicos Laranjal do Jari I e II, antigas aldeias localizadas no sul do Amapá, que datam por volta dos séculos VIII a XV AD. As estruturas de deposição cerâmica revelaram a presença dos conjuntos cerâmicos Jari e Koriabo. A partir da análise tecno-funcional da cerâmica e associações com contextos de deposição e sepultamentos, sugerem-se formas de sociabilidade e concepções sobre vida e morte dessas sociedades pré-coloniais que diferem das noções de afastamento dos mortos e construção de novas identidades, comuns à maior parte das populações indígenas contemporâneas.
High Temperature Effectiveness of Ginger Extract as Green Inhibitor for Corrosion in Mild Steel
Authors: Sohail Muhammad , Hussain Fayaz , Chandio Ali Dad , Sheikh Maryam
Published: January 2021

Corrosion is one of the major problems of mild steels in acidic medium. This can be minimized by the application of corrosion inhibitors, however; the most of inhibitors are toxic in nature. Therefore inhibitors from green sources are highly desirable to maintain the sustainability of the environmental system. Consequently, in this study ginger was selected; its juice extracted mechanically and used as an inhibitor. The different concentrations of ginger extract such as 0.25ml, 0.5ml, 0.75ml and 1ml were mixed in 0.1 M HCl solution to record the effect of inhibitor on corrosion rate at room temperature and at an elevated temperature of 50ᵒC. Electrochemical linear polarization resistance (LPR) tests were carried out to determine the corrosion rates at both temperatures with different additions of the inhibitor respectively. The LPR test uses three electrodes, first electrode of AISI 1019 (mild steel), second electrode is standard electrode of saturated calomel while the third electrode consists of graphite, which is called counter electrode, to measure potential difference. The whole assembly was dipped in the solution having varying concentration of inhibitors. The corrosion rate was found to be higher in the absence of ginger- extract. Conversely, the corrosion rate was dramatically reduced more prominently at 50oC but was less effective at Troom; with the trace-additions of ginger-inhibitor. So this research would be the good contribution to overcome the deterioration of mild steel and increase its life at ambient temperatures, by using economically available environmentally-friendly organic compound specially the use of locally available raw material should be focused.
Parametric Statistical Significance of Iron (II) Ions Adsorption by Coconut Shell in Aqueous Solutions
Authors: Olufemi Babatope Abimbola , Nlerum Anne
Published: January 2021

The parametric statistical adsorption of chemically unmodified coconut shell powder (CSP) to adsorb iron (II) ions from aqueous solutions was examined in this work. It was observed that the adsorption capacity increased with increasing adsorbent dose, reducing adsorbate dose, increasing contact time, decreasing temperature and reducing particle size. As observed about one gram of the adsorbent was sufficient enough to remove 98 % iron (II) ions. A total contact time of about 40 minutes was sufficient for almost complete adsorption of the ions, while a pH of about 6.0 exhibited the maximum adsorption capacity. The sorption data were fitted into Langmuir, Freundlich, Temkin and the Dubinin-Radushkevich isotherms, fitted most with the Freundlich Isotherm model. The energy values obtained from the Temkin and Dubinin-Radushkevich isotherm model indicated high chemisorption phenomenon with the adsorbents. Investigation of some kinetic models confirmed that the adsorption of iron (II) ions using CSP was a pseudo-second order kinetic process, which further corroborates that chemisorption dominates the adsorption. Fourier Transform Analysis (FTIR) further established and justified the outcome of the study. The adsorption was parametrically justified statistically with Analysis of Variance (ANOVA) and Bonferroni-Holm Posthoc significance test. Conclusively, coconut shell proved strongly to be an effective and suitable adsorbent for removing iron (II) ions from aqueous solutions.
Set point tracking of Ball and Beam System Using Genetic Algorithm based PI-PD Controller
Authors: Ali Tayyab , Malik Suheel Abdullah , Adeel Muhammad , Amir Muhammad
Published: January 2021

The ball and beam system is one of the commonly used benchmark control apparatus for evaluating numerous different real systems and control strategies. It is an inherently nonlinear and open-loop unstable system. In this paper, we have suggested an Evolutionary Algorithm (EA) based Proportional Integral-Proportional Derivative (PI-PD) controller for the set point tracking of this well-known ball and beam system. A linearized model of the ball and beam system is deduced and PI-PID control methodology is employed. The popular EA technique such as Genetic algorithm (GA) is used for tuning of the controller. The optimized values of the controller parameters are achieved by solving a fitness function using GA. The transient performance of the proposed GA based PI-PD controller (GA-PI-PD) is evaluated by carrying set point tracking analysis of the ball and beam system through MATLAB/Simulink simulations. Furthermore, the performance of GA-PI-PD controller is investigated using four different performance indices such as Integral of squared value of error (ISE), Integral of time multiplied by squared value of error (ITSE), Integral of absolute value of error (IAE) and Integral of time multiplied by absolute value of error (ITAE). The comparison of transient performance including rising time, settling time and % overshoot is made with SIMC-PID and H-infinity controllers. The comparison reveals that GA-PI-PD controller yielded transient response with small % overshoot and settling time. The superior performance of the GA-PI-PD controller has witnessed that it is highly effective for maintaining good stability and the setpoint tracking of ball and beam system with fast settling time and less overshoot than SIMC-PID and H-infinity controllers.
Hydrodynamic and combustion behavior of low grade coals in the riser of a circulating fluidized bed combustor
Authors: Hussain Ahmad , Junejo Faraz , Qureshi Muhammad Nauman , Haque Afzal
Published: January 2021

This study is conducted for understanding the fluidization behavior in a CFB combustor for low ranked coals. A lab-scale cold CFB test rig was built at the NFCIET Multan for understanding the fluidization behaviour. Influence of fluidizing air on the fluidization behavior was observed. It was found that voidage along the riser height is affected by riser geometry. The combustion behavior of low grade coals from Thar coal was also explored in a CFB Combustor. The influence of the fluidizing air on the combustion erformance was examined and their effect on emissions was established. The temperature in the riser of the CFB rose quickly to around 900°C. This rise in temperature has caused an increase in the amount of exhaust gasses which has their influence on the suspension density. From this study, a firsthand experience of combustion behavior of low grade Pakistani coals was documented.
Comparative study of cut and abrasion resistance performance of gloves made from high performance composite yarns
Authors: Akhtar Naveed , Malik Mumtaz Hasan , Bakkar Abu
Published: January 2021

Cut resistant gloves are generally made from different types of high performance composite yarns. To achieve a certain level of cut resistance, material type, material composition and yarn linear density are changed which however make it sometimes difficult to decide the most suitable combination of the materials. In this work, eighteen seamless gloves were made by using core and sheath friction-spun yarns of various linear densities and core types, and their cut resistance performances were compared.For this purpose, eighteen composite yarns with three linear densities i.e. 118 tex (Ne 5), 98 tex (Ne 6) and 84 tex (Ne 7) were made on a friction spinning machine by using 5.55tex (50 denier), 11.11 tex (100 denier), 16.66 tex (150 denier), 33.33 tex (300 denier) multifilament glass yarns, and 89 denier (40 micron) and 139 denier (50 micron) monofilament steel yarn as core and Kevlar®29 staple fiber as sheath. Mechanical tests of the yarns showed that the tensile strength and tenacity of yarns increased as the linear density of glass yarns increased, whereas elongation at break and time to break increased with an increase of linear density of steel monofilament yarn. Coefficient of friction of all the yarns did not show any significant trend. Abrasion and cut resistance of the gloves made from 118 tex (Ne 5) composite yarn with 5.55tex (50 denier) glass yarn as core showed the best results, whereas no significant difference was seen in the dexterity of all the gloves.
Critical Events of Fog Attenuation Using Visibility Data in Lahore, Pakistan.
Authors: Yasir Sultan Mahmood , Salman Muhammad , Saleem Muhammad Shoaib
Published: January 2021

Free-space optics (FSO) communication system is mature, unique and promising technology which is used in various countries to meet high data rate demand and last mile connectivity. FSO link has a capacity to be utilized as a primary communication links by replacing RF communication systems because of its advantages of unregulated bandwidth, broader spectrum of frequency at low power consumption. Now a days researchers has great interest in this technology because of several features and benefits of larger bandwidth, less power consumption, low installations cost, simple to install, no congestion in spectrum, secure and reliable communication without issues of right of way. In free space optical communication, environment layer is used for signal transmission which can be effected from severe weather conditions like smog, dust, smoke, rain and fog etc. In all these severe weather environments, winter fog is one of the main problem because of it offers high optical attenuation on communication link. In this investigation the entire winter season has been observed. There are four fog events which attenuate the optical signal most. Optical attenuation is estimated using three famous fog prediction models like Al Naboulsi, Kim and at wavelengths of 850nm, 1350nm, and 1550 nm.
A low latency quaternion-based web transmission system for augmented reality applications
Authors: Ijaz Umer , Butt Arslan Dawood , Khalid Muhammad Husnain , Anwar Muhammad Fraz , Malik Muhammad
Published: January 2021

This work deals with the development and testing of a low latency Animation Transmission Technology (ATT) for augmented reality applications. This web-based transmission system based on AutoBahn Pyhton web server and WebSocket LibrarY (WSLAY) integrated clients has been studied to reduce packet header size and to simultaneously allow a large number of Users to interact with each other. The transmission system in the proposed system architecture allows motion sensor’s acquisition software to easily send compressed 3D quaternion-based data from transmitter to the rendering softwares at receiver side to generate real time 3D animation on an avatar. Furthermore, effects of lossy compression of quaternion data and server limitation have also been considered. Initial simulation test results with the Python server alongside WSLAY integrated clients with virtual motion sensors have been presented in this work. It has been evaluated that the network delay (ND) has a huge improvement from more than 300 ms to less than 25 ms at 100 Hz sensor sampling rate once lossy compression of 3D quaternion data is implemented. Furthermore, the effect of motion sensor sampling frequency and broadcast server limitation on maximum number of simultaneous users/sensors is also described in this work.
Development and characterization of repeating macro and micro geometric surface features on plain carbon steel using chemical etching
Authors: Hamza Shams, Muhammad Nauman Qureshi Isra Tariq, Fatima Maryum, Maheen Fazal,
Published: January 2021

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This paper investigates the use of chemical etching to develop repeating macro and micro geometric surface features on plain carbon steel. Important properties can be imparted in a material by the use of these surface features or textures leading to enhanced corrosion resistance in plain carbon steels. Maskant perforated with pinholes combined with standard chemical etching methods was used to create repeating features on the sample’s surface. Surface characterization was carried out using optical materials analysis microscopy and dynamic-mode imaging using an Atomic Force Microscope. Surface profiles were evaluated based on their center-to-center distance, surface topography and average surface roughness. Comparison with control sample revealed the effects of chemical etching in terms of changes in the average surface roughness and surface topography. Limitations were observed in the control of etchant flow to sample’s surface. However, the results were significant in refinement of the chemical etching methodology for this application.
A multi-threaded communication architecture for networked control systems
Authors: Syed Raazi Muhammad Khaliq-ur-Rahman. Muhammad B. Kadri
Published: January 2021

Advancement in communication technology has paved the way for geographically dislocating controllers from the plants they are controlling. Establishing a secure and reliable communication is an essential component to achieve robust control performance. Myriad network control schemes have been proposed but they are incapacitated due to a lack of reliable software paradigm. This highlights the need of a distributed system, which provides platform for smooth communication between a plant and its controller. In this work, we propose CASAPAC, which is a multi-threaded communication architecture designed to ensure reliable and in-order delivery of information between different modules of a network control system. Any control algorithm can be tested and employed over any network using CASAPAC. An adaptive fuzzy controller and a network based gain scheduled PI (Proportional Integral) controller have been tested on different networks using CASAPAC. In both cases, tests were carried out on a real plant of a coupled tank system. CASAPAC was able to handle all the communication efficiently in different scenarios and good control performance was achieved in both cases.
A Survey on Distributed Information Systems using Semantic Web Techniques
Authors: Syed Imran Jami Syed Farhan Mohsin,
Published: January 2021

Semantic web is the growing field whose integration with Distributed Information System helps it in gluing technology. The framework of Semantic web deals with the representation, logic, rules and trust. We in this work surveyed the representation aspect of Semantic web by exploring ontologies proposed in various domains in the last three years. We observed that the research trends in semantic web for distributed information system is going in two directions i) theoretical framework ii) development of ontologies across different domains. We limited our work towards the domain of distributed information systems. Several detailed ontologies have been identified that are developed for integration with distributed information system across different domains. We conclude that ontologies need extensive work in its foundation, while more domains should be further explored in the development of robust information system in distributed environment.