Computational Models Development and Demand Response Application for Smart Grids

This paper focuses on computational models development and its applications on demand response, within smart grid scope. A prosumer model is presented and the corresponding economic dispatch problem solution is analyzed. The prosumer solar radiation production and energy consumption are forecasted by artificial neural networks. The existing demand response models are studied and a computational tool based on fuzzy clustering algorithm is developed and the results discussed. Consumer energy management applications within the InovGrid pilot project are presented. Computation systems are developed for the acquisition, monitoring, control and supervision of consumption data provided by smart meters, allowing the incorporation of consumer actions on their electrical energy management. An energy management system with integration of smart meters for energy consumers in a smart grid is developed

Power Flow Analysis

Power flow, or load flow, is widely used in power system operation and planning. The power flow model of a power system is built using the relevant network, load, and generation data. Outputs of the power flow model include voltages at different buses, line flows in the network, and system losses. These outputs are obtained by solving nodal power balance equations. Since these equations are nonlinear, iterative techniques such as the Newton-Raphson, the Gauss-Seidel, and the fast-decoupled methods are commonly used to solve this problem. The problem is simplified as a linear problem in the DC power flow technique. This chapter will provide an overview of different techniques used to solve the power flow problem

The Effect of Competitive Sport on Achievement’s Motive—Study of Between Students’ Athletes and Students’ Non-Athletes

This study aims to reveal whether the sporting achievement (high performance) among student athletes able to cultivate qualities oriented achievement motivation. Research by design ex post de facto (research after the event) in which the data collection techniques using achievement motivation questionnaire. The Achievement motivation questionnaire arranged and developed following the Likert model with reference to five levels, with a reliability of 0.85, while the alternative answers were arranged in such a way in the form of simulation. The population in this study was the PPLP student athletes in North Sumatra and students of SMA 6 Medan. Based on the results of the study at 95% confidence level (α 0.05), significantly found (1) there were differences in achievement motivation among student athletes and non-athletes, (2) there was no difference in achievement motivation by the length of exercise, (3) there were no difference in achievement motivation of athletes male and female athletes, (4) there was not difference in achievement motivation among the 7 sports. The results of the study recommended that to improve students achievement motivation should participate or engage in competitive sports

Drone-Based Magnetic Surveying in Eastern Nebraska

A magnetic survey is one of the methods used by scientists to detect subsurface features. Magnetic surveys can be carried out by walking on the surface of the earth with a magnetic field reading device called a magnetometer. Alternatively, a magnetometer can be installed on a moving platform (aircraft, boat, drone, bicycle) to conduct a more efficient magnetic survey. The geophysics team at the University of Nebraska at Lincoln assembled a drone-based magnetic survey system in 2019 (Jacobson and Filina, 2019) that has proven effective in magnetic readings over the Northern Bounding Fault (NBF) in eastern Nebraska (Jacobson and Filina, 2020; Jacobson, 2020). This project builds up on that study and aims to utilize the system to conduct two more magnetic surveys near Venice, NE. The first survey targeted the Northbound Fault to further study its strike direction and potential segmentation. Two separate flights were made to cover the target area above the fault. The second survey was conducted over an abandoned petroleum well (the Sorenson well drilled in 1974) to check its location against the published coordinates. As the well was cased with highly magnetic metal pipes, it is subject to an elevated magnetic signature. This project has two main conclusions. The first relates to the fault direction that was determined to be consistent with the one found in the 2019 survey and deviating further from the published fault orientation; no-fault segmentation was interpreted in the study area. The second conclusion relates to the location of the Sorenson well which is 35 meters to the southwest of the published well coordinates. Faculty Mentor: Irina Filina

USING PERSONAL-TYPE RELATIONSHIPS (GUANXI) TO ATTRACT AND RETAIN CUSTOMERS IN SMALL BUSINESS ENTERPRISE (SBE): AN EMPIRICAL STUDY IN UAE, ABU DHABI

Very few researchers have investigated the underlying socio-cultural formulas in the aspects of culture that affect relationships around the globe. Middle Eastern cultures give great importance to personal-type relationships (akin to the Chinese concept of Guanxi), in many different spheres of life. This research identifies the factors composing the unique forms of such relationships that are found in the context of Abu Dhabi city. The research focuses on the significant role and the effect of the cultivation in business contexts of personal-type relationships, characterized by the presence of personal trust, empathy, reciprocity, bonding, face, and affection. The aim of this research was to find the dimensions of such relationships and to test them as organizational relationships, as determinants of customer satisfaction and customer retention in the sector of small business enterprises (SBEs). Survey data that provided a sample to test the suggested model were collected from a database that included Abu Dhabi’s SBEs. The findings of this research showed that personal relationships in this context could be extended to organizations. In addition, the results showed that the consequences of personal-type relationships (Guanxi) positively influence customer satisfaction and customer retention. Further, the contextualization of the constructs in this research helps to plug few current gaps in the literature on Guanxi theory

HEAVY METAL BIOACCUMULATION IN BENTHIC FLATFISHES FROM TERRITORIAL WATERS OF FUJAIRAH, UNITED ARAB EMIRATES

Marine pollution from anthropogenic sources is a major threat to many coastal and offshore species. A variety of potentially harmful elements are released from wastewater runoff, leached from landfills or industrial effluents. I measured trace metal concentrations in the liver, gills, and muscles of two benthic flatfish species, the halibut (Hippoglossus hippoglossus), and the Dover sole (Solea solea). The primary objective of this thesis was to evaluate the status of the benthic fish species in the Fujairah waters to understand the pollution status of regional waters and assess their effects on human consumption. Inductively Coupled Plasma Optical Emission spectroscopy was used to measure the following trace metals As, Ca, Cd, Co, Cr, Cu, Pb, Mg, Mn, Hg, Mo, Ni, K, P, Na, S, Sr, V, and Zn in a total of 129 prepared samples. The concentration of metals in the liver was higher than the other two organs followed by gills and then muscles. The Dover sole samples generally had higher metal concentrations than the halibut. Differences in the two species could be because of differences in their habitat use and feeding habit. This study offers knowledge and a basis for understanding the level of metal pollution present in the benthic fishes of Fujairah. Although concentrations of heavy metals did not exceed dangerous levels, some of the values appear to indicate rising pollution in the region. Regular monitoring of harmful elements in fish collected from this region and better monitoring of pollution in the environment could help safe guard marine species and human consumers alike

Evaluating universities Twitter web pages responding to the Black Lives Matter movement

In the wake of the Black Lives Matter (BLM) movement in May 2020, many colleges and universities responded by making statements on their website and social media channels condemning racism. Higher education institutions began initiatives for diversity, equity, and inclusion (DEI) for faculty, staff, administrators, and students on campus. Three years later, this study investigates whether universities are still offering and promoting workshops, classes, events, and activities related to DEI to campus communities. To do so, the researchers conducted a content analysis on Twitter categorizing tweets over a one-month period, then they classified the Tweets using the top 10 colleges in the U.S. News & World Report published in 2021. Tweets were categorized by the authors with the following classifications: equality and diversity, academics, campus life, faculty and student research, campus upgrades, administrative information, community service, and others. The researchers discovered that all categories were utilized to engage current students and to attract potential new students. The faculty and student research category was tweeted the most by universities over the one month of Twitter classification. Even though the category of “diversity, equality and inclusion” was not the most tweeted category, it was still frequently utilized as higher education institutions strongly highlighted content and information related to DEI initiatives

Efforts to Improve Long Jump Skills in Squat Style Through a Play-Based Approach on 11th Grade Science Students at Teladan High School in Sei Rampah

The problem of this research is the inadequate learning process and facilities in the long jump technique using the squat style, as well as the lack of mastery of basic skills in long jump, resulting in suboptimal student learning outcomes. Based on the problem, the research problem in this study is how to improve learning outcomes in long jump using the squat style through a play-based approach for students in class XI IPA of Teladan Sei Rampah High School, Sei Rampah Subdistrict, Serdang Bedagai District. This study is a Classroom Action Research (CAR) conducted in 2 cycles. The population and subjects of this study are 36 students in class XI IPA of Teladan Sei Rampah High School, Sei Rampah Subdistrict, Serdang Bedagai District. The results of this study show that through play-based learning, students' abilities in learning long jump using the squat style can be improved. The conclusion of this study is that through play-based learning, the ability to perform long jumps using the squat style can be improved for students in class XI IPA of Teladan Sei Rampah High School, Sei Rampah Subdistrict, Serdang Bedagai District

Implementation of the Merdeka Curriculum in Physical Education, Sports, and Health Subjects at Langsa City Public Elementary Schools

This study aims to evaluate the implementation of the Merdeka Curriculum in Physical Education, Sports, and Health (PJOK) subjects at Langsa City Public Elementary Schools. The focus of the research is on the learning process and the results achieved by students. This study uses observation and evaluation methods based on the standard learning process of PJOK. Data were collected through observation of learning activities that included introductory, core, and closing activities in classes VIII and IX. Data analysis in this study was carried out using the prerequisite test and t-test to test the research hypothesis. The results showed that the average value for preliminary activities was 45.5 (excellent category), core activities 50.09 (excellent category), and closing activities 15.13 (good category). Overall, the implementation of PJOK learning received a total score of 110 which is included in the excellent category. This study also found that the implementation of the Merdeka Curriculum at the school has been implemented optimally. The implementation of the Merdeka Curriculum in the PJOK subject at Langsa City Public Elementary Schools has been going well, having a positive impact on the learning process and student learning outcomes. Guidance from the driving school has assisted teachers in implementing meaningful learning by the new paradigm. The evaluation shows that the PJOK learning process not only improves students' physical fitness but also their social and individual development