Digital Commons Network^™

Solar Irradiance Forecasting Using A Novel Hybrid Deep Ensemble Reinforcement Learning Algorithm, Seyed Mohammad Jafar Jalali, Sajad Ahmadian, Bahareh Nakisa, Mahdi Khodayar, Abbas Khosravi, Saeid Nahavandi, Syed Mohammed Shamsul Islam, Miadreza Shafie-Khah, João P. S. Catalão

Research outputs 2022 to 2026

Solar irradiance forecasting is a major priority for the power transmission systems in order to generate and incorporate the performance of massive photovoltaic plants efficiently. As such, prior forecasting techniques that use classical modelling and single deep learning models that undertake feature extraction procedures manually were unable to meet the output demands in specific situations with dynamic variability. Therefore, in this study, we propose an efficient novel hybrid solar irradiance forecasting model based on three steps. In the first step, we employ a powerful variable input selection strategy named as partial mutual information (PMI) to calculate the linear and non-linear …

Effect Of Perceived Job Risk On Organizational Conflict In Tourism Organizations: Examining The Roles Of Employee Responsible Behavior And Employee Silence, Jun Yu, Chaowu Xie, Songshan (Sam) Huang

Research outputs 2022 to 2026

Job risk and organizational conflict create pervasive dilemmas within the tourism industry that significantly concern managers and practitioners. However, little research has informed the relationship between job risk and organizational conflict. Based on conservation of resources theory, this study adopted a multi-study design and examined the effect of perceived job risk on organizational conflict in the tourism industry in both tourist hotels (Study 1, n = 495) and tourist attractions (Study 2, n = 401). In addition, the roles of employee responsible behavior and employee silence in moderating the effect of job risk on organizational conflict were examined. Study 1 …

Natural History Of Odonata Assemblages In Tropical Streams In Puerto Rico, Ashley Mariani-Ríos, Norman Maldonado-Benítez, Alonso Ramírez

Neotropical Biodiversity

Freshwater macroinvertebrates play an important role in maintaining stream food webs. Odonata (dragonflies and damselflies) are important top predators in these communities and serve as indicators of stream health. Our understanding of odonate assemblages is limited in the Caribbean and the natural history of most odonate species in the region remains unknown. The focus of this research is to study the natural history of odonate species in headwater montane streams following major hurricane impacts in Puerto Rico. We monitored assemblages from August 2018 to July 2019 in two headwater streams within El Yunque National Forest, Puerto Rico. The study streams …

A Novel Biomaterial Platform For Cardiac Tissue Engineering, Andrew House

Dissertations

Heart disease is one of the leading causes of death in the world. With a growing demand for in vitro cardiac models that can recapitulate the complex physiology of the cardiac tissue, there is a desire to create novel therapies and treatments. However, due to a lack of fundamental understanding of the heart's inflammatory response to myocardial infarction, the development of new therapies is both time consuming and costly. In this work, a novel approach to fabricating a dynamic hydrogel cardiac platform is reported. This platform better mimics the dynamic changes occurring in the native cardiac tissue microenvironment during cardiac …

Teaching Business Ethics: Plato Was Right, David F. Perri, Megan V. Teague

Management Faculty Publications

Ethical lapses in major corporations continue to draw public attention to the specter of corporate misconduct. This paper presents a pedagogical approach that is designed to enhance student understanding and appreciation of the challenges that business leaders face when confronted with the conflict between the profit-maximizing demands of capitalism and the ethical expectations of society. This is an approach that fully acknowledges the seductive nature of unethical conduct in search of corporate rewards. This paper presents a method which can be applied both in undergraduate and graduate coursework, facilitates the examination of two corruption cases (Enron and WorldCom), and highlights …

The Difference In Transepidermal Water Loss (Tewl) Values Between Sun-Exposed And Non-Sun-Exposed Skin Among Male Medical Students, Ihsany Arafiasetyanto Prihadi, Endra Yustin Ellistasari, Arie Kusumawardani

Journal of General - Procedural Dermatology and Venereology Indonesia

Background: Transepidermal Water Loss (TEWL) is the amount of water released from the human body into the atmosphere through a diffusion process per unit of time. Changes in TEWL indicate impaired skin barrier function. Exposure to ultraviolet light for an extended period can cause photoaging, characterized by rough and dry skin (xerosis cutis). TEWL will increase significantly in the skin exposed to ultraviolet radiation. This study aims to determine the difference in the TEWL values among male medical students in the sun-exposed and non-sun-exposed skin areas.

Methods: An analytical observational cross-sectional study was conducted at the Dermatology and …

Risk Factors For Hiv-Positive Status In Condyloma Acuminata, Izazi Hari Purwoko, Putri Laksmi Karim, Suroso Adi Nugroho, Theresia Toruan, Fitriani .

Journal of General - Procedural Dermatology and Venereology Indonesia

Background: Condyloma acuminata (CA) is a sexually transmitted infection (STI) caused by human papillomavirus (HPV), especially types 6 and 11. The number of HPV infections increases in immunosuppressed conditions, such as human immunodeficiency virus (HIV) infection. Risk factors in CA patients such as gender, sexual partner, sexual orientation, and sexual intercourse can increase HIV status.

Methods: This is a descriptive-analytic study with a cohort retrospective design. The subjects are all CA patients who visited the polyclinic STI Dr. Mohammad Hoesin, General Hospital, Palembang, Indonesia, between 2016-2020. The number of CA patients included in the study were 115 patients …

Seborrheic Keratosis Profile At Dr. Hasan Sadikin Central General Hospital Bandung 2015-2019, Eva Krishna Sutedja, Resti Gradia, Tri Aswila Latifah

Journal of General - Procedural Dermatology and Venereology Indonesia

Background: Seborrheic keratosis (SK) is adults’ most prevalent benign skin tumor. SK originates from the proliferation of keratinocyte cells with varying morphology and degree of pigmentation. The lesions often resemble other types of malignancy. There are still many discrepancies in SK in Indonesia; hence, SK needs further understanding. This study aimed to describe the profile of seborrheic keratosis cases based on age, sex, location of lesions, and therapy at Dr. Hasan Sadikin Central General Hospital, Bandung, for five years

Methods: This was a retrospective descriptive study with total sampling. Secondary data were collected from medical records of SK …

Characteristics Of Extreme Precipitation And Their Effect On Bean Yield In Rwanda, Paul Ts Limbu Sr

Tanzania Journal of Engineering and Technology (TJET)

This study examines the characteristics of extreme precipitation and its effect on bean yield in Rwanda from 1981 to 2017. Over the study area, two rainy seasons, March to May (MAM) and September to December (SOND), account for approximately 80% of total rainfall. The spatial distribution of rainfall over Rwanda revealed that the first three EOF modes of MAM rainfall vary by 72.72 percent over the study period, while the first three EOF modes of SOND rainfall vary by 57.48 percent. The spatial analysis of extreme precipitation reveals that during wet years, the majority of the country's western regions receive …

A Chemical Study Of Archaeometallurgical Ceramics From Southwestern Tanzania, Edwinus Lyaya

Tanzania Journal of Engineering and Technology (TJET)

Archaeometallurgical ceramics, including furnaces, tuyères, and potteries, were required for successful pre-industrial iron smelting and refining. However, there are limited chemical studies on archaeometallurgical ceramics in Tanzania. This paper examined the nature of clay source in terms of refractoriness, determined whether there were multiple clay sources, and verified the refractoriness of the archaeometallurgical ceramics. An x-ray fluorescence (XRF) analytical technique and experimental re-firing of the archaeometallurgical ceramics were employed. The chemical data clustered in the mullite region on the Al2O3-SiO2-FeO ternary system indicate that iron smelters and refiners chose refractory clay sources for making archaeometallurgical ceramics. Small range and standard …

Occlusion Handler Density Networks For 3d Multimodal Joint Location Of Hand Pose Hypothesis, Stanley Tito

Tanzania Journal of Engineering and Technology (TJET)

(HPE) process is an ill-posed challenge. This is due to severe self occluded joints of the hand. The existing approaches for predicting pose parameters of the hand, utilize a single-value mapping of an input image to generate final pose output. This way makes it difficult to handle occlusion especially when it comes from the multimodal pose hypothesis. This paper introduces an effective method of handling multimodal joint occlusion using the negative log-likelihood of a multimodal mixture-of-Gaussians through a hybrid hierarchical mixture density network (HHMDN). The proposed approach generates multiple feasible hypotheses of 3D poses with visibility, unimodal and multimodal distribution …

Properties Of (Cd, Zn)S Films Deposited By Dc Co-Sputtering, Lwitiko P. Mwakyusa

Tanzania Journal of Engineering and Technology (TJET)

CdS thin film is commonly used as a buffer layer in most thin film solar cells. However, the buffer layer with less absorption in the visible region of the solar spectrum as well as that which provides perfect lattice matching with the absorbers is required. The incorporation of Zn in the CdS films can affect the structural and optical properties of the buffer layer. In this work, films of CdS and (Cd,Zn)S films were deposited by DC sputtering utilizing CdS and Zn targets. The concentration of Zn in the CdS was varied by changing the sputtering power of the Zn …

Filtering Effect On Rssi-Based Indoor Localization Methods, Kwame S. Ibwe

Tanzania Journal of Engineering and Technology (TJET)

Indoor positioning systems are used to locate and track objects in an indoor environment. Distance estimation is done using received signal strength indicator (RSSI) of radio frequency signals. However, RSSI is prone to noise and interference which can greatly affect the accuracy performance of the system. In this paper Internet of Things (IoT) technologies like low energy Bluetooth (BLE), WiFi, LoRaWAN and ZigBee are used to obtain indoor positioning. Adopting the existing trilateration and positioning algorithms, the Kalman, Fast Fourier Transform (FFT) and Particle filtering methods are employed to denoise the received RSSI signals to improve positioning accuracy. Experimental results …

A Genetic Algorithm Approach To Optimal Sizing And Placement Of Distributed Generation On Nigerian Radial Feeders, Adelowo Balogun

Tanzania Journal of Engineering and Technology (TJET)

Mitigating power loss and voltage profile problems on radial distribution networks has been a major challenge to distribution system operators. While deployment of distributed generation, as compensators, has made a suitable solution option, optimum placement and sizing of the compensators has been a concern and it has thus been receiving great attention. Meta-heuristic algorithms have been found efficacious in this respect, yet the use of the algorithms in addressing problems of radial feeders is still comparatively low in Nigeria where analytical and numerical programming methods are common. Hence; the use of genetic algorithm to site and size distributed generator for …

Review Of The Imaging Performance And The Current Status Of The Cascade Gamma-Rays Coincidence Imagers, Leonid L. Nkuba Dr.

Tanzania Journal of Engineering and Technology (TJET)

Various studies that have investigated the detection of gamma coincidence events have revealed that design factors and image reconstruction approaches dictate the spatial resolution, coincidence efficiency, and levels of statistical noise of the detection system. In the case of imaging, cascade gamma-ray coincidence (CGC) imagers coupled with collimated detectors offer promising values for both spatial resolution and coincidence efficiency. However, to date, no CGC imager with single or multiple collimated detectors has reported a performance level beyond 6.7 mm spatial resolution (FWHM) and 6.0 × 10-6 coincidence efficiency. Given the recent developments and the current interests in high resolution and …

Evading The “Entrepreneurial Blocks” Through Entrepreneurial Marketing Education In Vocational High Schools In An Emerging Country, Jony Oktavian Haryanto, Hanif Adinugroho Widyanto, Hari Suryanto, Adhi Setyo Santoso

ASEAN Marketing Journal

Entrepreneurial marketing education is considered an essential platform to stimulate successful entrepreneurs, especially for vocational high school (SMK) graduates in Indonesia, which has the highest open unemployment rate and mostly comes from low-income backgrounds. Hence, the researchers investigated why most SMK graduates, supposedly skilful, do not opt for entrepreneurship. This is an under-researched study that could carry enormous implications. The researchers interviewed participants from SMKs in Mataram, Indonesia, three entrepreneurship teachers and six students of entrepreneurship classes from grades 10 to 12. They referred to the extant literature as a basis for a proposed “Entrepreneurial Blocks” framework to explain the …

Gambaran Tingkat Kecukupan Energi Dan Tingkat Kecukupan Protein Ibu Hamil Di Kota Malang, Rany Ekawati, Windi Chusniah Rahmawati, Farah Paramita, Dini Elita Berliana, Alfinadelasari Putri Fariadi

Preventia: The Indonesian Journal of Public Health

Chronic energy deficiency (CED) in pregnant women is still a nutritional problem in Indonesia. CED in pregnant women is caused by low energy and protein intake in pregnant women. The low energy and protein intake in pregnant women can cause disturbances in pregnancy and the baby in the womb. This research objective is to provide an overview of the level of energy and protein adequacy of pregnant women in the city of Malang. This study is a quantitative study with a cross-sectional design. The sample in this study was 64 pregnant women. The variables of energy adequacy and protein adequacy …

Perbedaan Pemberian Bioaktivator Dalam Kompos Takakura Terhadap Pertumbuhan Tanaman Tomat (Lycopersicum Esculentum), Anjali Putri Agustin, Septa Indra Puspikawati, Mohammad Zainal Fatah

Preventia: The Indonesian Journal of Public Health

Indonesia's population is increasing from year to year which has an impact on increasing the amount of waste and has a negative impact on public health and the environment. One of the proper waste handling methods is simple, practical, and efficient composting using the Takakura composting method. This study aims to determine the differences in stem height and number of leaves of tomato plants (Lycopersicum esculentum) between the control group and the treatment group with the addition of 4 bioactivators in Takakura compost. The research method uses an experimental design conducted in Banyuwangi during March-April 2022. Statistical analysis using T-test …

Systematic Review: Analisis Pengadaan Musik Kerja Terhadap Produktivitas Kerja Tenaga Kerja, Afan Alfayad, Endang Dwiyanti

Preventia: The Indonesian Journal of Public Health

This research was conducted to see the effectiveness of the procurement of work music on labor productivity. This study uses a systematic review method by finding 15 types of research articles, research articles are considered inclusion criteria based on PICOS (Population, Intervention, Comparison, Study Design Results, Year of Publication, and Language) as follows: 1) human sample, 2) work music intervention, 3) comparison of giving work music and not giving work music, 4) results: work productivity, 5) research articles, 6) articles published in 2012 until 2022, 7) in English and Indonesian. Procurement of work music is associated with increased worker productivity. …

Validating Financial Statement Comparability Assessment In Non-Profit Firms, Daniel Friesner, Andrew Brajcich

The North American Accounting Studies

In a recent manuscript, Brajcich and Friesner (2022) proposed a new methodology to assess financial comparability in not-for-profit organizations. Their approach utilizes entropy-based information theory, and thus requires few prior assumptions about the formation and implications of financial statement comparability. This manuscript assesses the practical utility of the Brajcich and Friesner (2022) methodology by comparing its results to those generated by nonhierarchical cluster analysis. The analysis was conducted using balance sheets drawn from Washington State critical access hospitals in 2019, using a similar set of hospitals and an identical set of variables outlined in Brajcich and Friesner (2022). We find …

The Global Mindset Of Accounting Educators - A National Study, Jill Christopher, Danielle Foster, Chao Wen, Perry Haan

The North American Accounting Studies

There is a mandate for business educators to cultivate Global Mindset in their students. In the accounting discipline, employers explicitly state that they seek job candidates who demonstrate a Global Mindset. To many educators in the U.S., developing Global Mindset in their students is a bewildering challenge because their own Global Mindset may be weak in some aspects, and widely used accounting textbooks fall short in presenting ideological, socio-political, and cultural perspectives alternative to that of Anglo-American capitalism. This study surveyed accounting educators from U.S. institutions to evaluate their Global Mindset, identify common weaknesses in their Global Mindset, and provide …

Editor's Foreword, Essam Elshafie

The North American Accounting Studies

No abstract provided.

Pelaksanaan Sistem Pengawasan Hakim Konstitusi Di Indonesia, Al Amin Syayidin Ali Mustopa

Jurnal Konstitusi & Demokrasi

The supervision system for constitutional judges in Indonesia based on the 1945 Constitution and Law 24/2003 explicitly involves two forms of supervision, namely internal supervision by the Honorary Council and external supervision by the Judicial Commission. The supervisory system finally changed after the Constitutional Court Decision Number 005 / PUU-IV / 2006. After this decision, the supervision system for constitutional judges in Indonesia underwent a substantial change in the form of supervision that eliminated external supervision. The existing internal supervision system often changes in accordance with the current statutory regime and implementing regulations. Changes related to the existing internal supervision …

Kerangka Praktik Kenegaraan Dalam Narasi Apriori Pembangunan Berkelanjutan Sebagai Hak Konstitusional: Sentralisasi Pendekatan Ekosentris Dalam Melawan Kenisbian Utilitas Pendekatan Antroposentris, Abdurrahman Al-Fatih Ifdal

Jurnal Konstitusi & Demokrasi

Sustainable development is a colossal narrative of state elites to institutionalize the right to development which, instead of being oriented towards harmonization of development efforts with efforts to protect the environment, is actually based on human interests. The inherent causality of this effort has an impact on systemic environmental damage in various countries. When the environment is no longer able to recover itself according to the timeline of meeting the needs of human civilization, an ambitious approach such as ecocentrism needs to be used as a counter-narrative to the anthropocentrism approach which tends to be relative: it looks useful, but …

Voices, Stories And Experiences Of Black Women: Informing The Establishment Of A Trenton-Based Maternal And Infant Health Innovation And Research Center, Tirzah R. Spencer Phd, Mph, Barbara George Johnson Mph, J.D., Consuelo Bonillas

Center for Health Policy Development

The establishment of a Maternal and Infant Health Innovation and Research Center is one of nine recommendations outlined by the 2021 Nurture NJ Strategic Plan to reduce maternal and infant mortality and morbidity and ensure equity in care and in outcomes for mothers and infants of all ethnic groups. The purpose of this environmental scan is to provide input for the design of a Maternal and Infant Health Innovation and Research Center within Trenton.

Building on the Nurture NJ Initiative, this project is a deeper dive in its focus on Black and Latina women living in Trenton and surrounding areas. …

Assessing Morphological Changes Of The Msimbazi River Using Satellite Images, Fides J. Izdori

Tanzania Journal of Engineering and Technology (TJET)

This study assessed historical morphology changes of the Msimbazi River in Dar es Salaam City, Tanzania, following heavy rainfall events using historical Google earth images. The erosion and sedimentation processes that cause morphological changes of a river are also associated with flooding within the river catchments. In this study, the bank-line movement, erosion and sedimentation areas and changes in river section width were analyzed under three-time periods: 2005- 2012, 2012- 2018, and 2018- 2020. Data shows that, the timing for floods coincides with the historical records for heavy rains. It was found that, area in the upper reaches of the …

Concrete Technology In A Rapidly Growing Urban Environment – The Case Of Dar Es Salaam City, John K. Makunza Jkm

Tanzania Journal of Engineering and Technology (TJET)

Concrete is a building material that is used in great quantities second only to our use of water. The ingredient materials of concrete include cement, fine and coarse aggregates plus a reasonable amount of water, and sometimes additives. The construction of various structures like, residential buildings, commercial buildings, hospitals, schools, bridges, etc., needs good quality concrete. Good modern technologies are needed by the construction industry in order to effectively construct buildings which are durable. A study has been done with the main objective of assessing the concrete technologies existing in rapid growing cities in Sub-Sahara Africa like Dar es Salaam, …

Development Of An Operational Satellite-Based Flood Monitoring Model For Tanzania, Andrew Kimati

Tanzania Journal of Engineering and Technology (TJET)

Timely information during water related disasters is of utmost importance for flood preparedness and risk reduction. However, the conventional ground-based photographic monitoring of flooded areas is an expensive and time-consuming exercise. Satellite remote sensing is a quick and affordable approach that can be used for concurrent floods detection at different scales. This is important as it facilitates timely information for emergency response to disaster management departments, even in scarcely instrumented catchments. This study presents a novel approach for flood tracking using satellite image remote sensing science to map flood affected areas immediately after occurrence of rainfall events. An open-source water …

Analysis Of Ore Hand-Crushed Size Distribution For Grinding Process In The Artisanal And Small-Scale Gold Mines Production: A Case Study Of Nholi Mine, Bahi District, Malugu Tembo

Tanzania Journal of Engineering and Technology (TJET)

(ASGM) employed numbers of people compared to large-scale mines. The ASGM has been played a crucial role in poverty alleviation and rural development, particularly in developing countries. The mined ore is crushed and ground for beneficiation of gold. The grinding process involved the size reduction of blasted materials to acquire minerals of interest. This paper presents the size distribution of hand-crushed for blasted materials using sieve analysis and digital image processing. The sieve test results for hand-crushed blasted material of three muck-piles were ranged between 17 mm and 36 mm that is equivalent to 20% and 80% passings respectively, with …

Deployment Of Inductive Loop Vehicle Traffic Counters Along Trunk Roads In Tanzania, Daudi Simbeye

Tanzania Journal of Engineering and Technology (TJET)

As Tanzania's population grows, there is a greater demand for efficient, effective, and strong road design, as well as a smooth transportation system with a balanced traffic management network architecture. To plan for maintenance and expansion of such a vast network, a credible data inventory and network condition must be established. The deployment of vehicle inductor loop counters along Tanzanian trunk roads is presented in this paper. At test sites, inductor loop sensors and control cards were used to capture vehicle traffic data, which was then wirelessly sent using GSM technology for vehicle classification verification and storage for future road …