Cyclic Behavior of Steel Beam-to-Column Moment Connections Using Different Sizes of Flange Plates and Reinforced by a Single Rib Plate

This paper presents a numerical study on the behavior of connection between steel I-beam and H-column when are affected by cyclic loading. The connection used the flange plates to connect the beam flanges to the column flange. They were welded to the top and bottom flange plates and created a welded flange plate (WFP) connection. Specimens were six models of WFP connections with different beam geometry and flange plate sizes which were modeled and their cyclic behavior were investigated using finite element analysis in ABAQUS program. Three of them were reinforced by a vertical triangular top and bottom rib plates, and others remained unreinforced. The results showed that reinforcement with a vertical triangular rib plate attached to the top and bottom flange plates can improve cyclic behavior of WFP connections.  By using a rib plate, the equivalent plastic strain was increased and showed better plastic hinge formation compared to those with no vertical rib plate. Those models with IPB beam sections had the best cyclic behavior compared to those with IPE beam sections and satisfied the acceptance criteria of AISC seismic provisions for intermediate and special moment frames. We concluded that those WFP connections which did not satisfy the criteria of AISC seismic provisions for special moment frames, can be upgraded by a vertical triangular rib plate in order to be used in special moment frames

Evaluating the Usage of Augmented Reality in General Education Schools of Saudi Arabia

Over the last decade the swift evolution of technology has introduced new ways to develop applications and learning environment. It has been argued that, using technology in education can broaden the horizon of students and help them thinking interactively. This paper aims to evaluate the usage of augmented reality in education, especially in general education schools of Saudi Arabia. In this study, some factors have been considered such as, students’ type (i.e., primary, intermediate and secondary), the main courses that apply the AR technology, the possible effect of using it in SA education, and challenges of using AR in educational settings. The most reported motive of using AR in Saudi Arabia schools is improving the quality of education skills. Some noted challenges imposed by AR are usability issues and lack of technical support. Other several challenges and effects of AR usage are founded, which will be discussed in detail

A survey of the effect of staff’s organizational commitment on effectiveness in municipalities of Yazd Province

The present study evaluated the relationship between the various dimensions of organizational commitment and organizational effectiveness in Municipalities of Yazd province. The study population was all municipalities in Yazd province (totally 22 organizations). The required organizations were the people being selected in each organization and the analysis basis was the organization. The study sample in the present study included two sections. The first section was dedicated to the selection of organizations staffs as samples and the standard organizational commitment questionnaire was distributed among them. Eight people were selected inside each organization as sample. The second section was dedicated to the evaluation of the effectiveness in the organization and included two sections: The first section was about the real entities referring to the organization directly and resolved the problems and the second section was including legal entities such as the state organizations, institutions and private companies and each of them were interacting with the studied organization and they were considered as organizational beneficiaries. The number of samples in each organization was 10 people, 5 real entities and 5 legal entities. The study measures were Meyer and Allen’s (1991) organizational commitment survey with 24 items and effectiveness questionnaire with 15 items. The data were analyzed by SPSS 15 software and Spearman rank correlation test and regression of the data of the questionnaires and the hypotheses were tested. The results showed that there was a significant association between the dimensions of organizational commitment and organizational effectiveness in Municipalities and affective organizational commitment was highly correlated with organizational effectiveness

Evaluating the Usage of Augmented Reality in General Education Schools of Saudi Arabia

Over the last decade the swift evolution of technology has introduced new ways to develop applications and learning environment. It has been argued that, using technology in education can broaden the horizon of students and help them thinking interactively. This paper aims to evaluate the usage of augmented reality in education, especially in general education schools of Saudi Arabia. In this study, some factors have been considered such as, students’ type (i.e., primary, intermediate and secondary), the main courses that apply the AR technology, the possible effect of using it in SA education, and challenges of using AR in educational settings. The most reported motive of using AR in Saudi Arabia schools is improving the quality of education skills. Some noted challenges imposed by AR are usability issues and lack of technical support. Other several challenges and effects of AR usage are founded, which will be discussed in detail

A survey of the effect of staff’s organizational commitment on effectiveness in municipalities of Yazd Province

The present study evaluated the relationship between the various dimensions of organizational commitment and organizational effectiveness in Municipalities of Yazd province. The study population was all municipalities in Yazd province (totally 22 organizations). The required organizations were the people being selected in each organization and the analysis basis was the organization. The study sample in the present study included two sections. The first section was dedicated to the selection of organizations staffs as samples and the standard organizational commitment questionnaire was distributed among them. Eight people were selected inside each organization as sample. The second section was dedicated to the evaluation of the effectiveness in the organization and included two sections: The first section was about the real entities referring to the organization directly and resolved the problems and the second section was including legal entities such as the state organizations, institutions and private companies and each of them were interacting with the studied organization and they were considered as organizational beneficiaries. The number of samples in each organization was 10 people, 5 real entities and 5 legal entities. The study measures were Meyer and Allen’s (1991) organizational commitment survey with 24 items and effectiveness questionnaire with 15 items. The data were analyzed by SPSS 15 software and Spearman rank correlation test and regression of the data of the questionnaires and the hypotheses were tested. The results showed that there was a significant association between the dimensions of organizational commitment and organizational effectiveness in Municipalities and affective organizational commitment was highly correlated with organizational effectiveness

A survey of the effect of staff’s organizational commitment on effectiveness in municipalities of Yazd Province

The present study evaluated the relationship between the various dimensions of organizational commitment and organizational effectiveness in Municipalities of Yazd province. The study population was all municipalities in Yazd province (totally 22 organizations). The required organizations were the people being selected in each organization and the analysis basis was the organization. The study sample in the present study included two sections. The first section was dedicated to the selection of organizations staffs as samples and the standard organizational commitment questionnaire was distributed among them. Eight people were selected inside each organization as sample. The second section was dedicated to the evaluation of the effectiveness in the organization and included two sections: The first section was about the real entities referring to the organization directly and resolved the problems and the second section was including legal entities such as the state organizations, institutions and private companies and each of them were interacting with the studied organization and they were considered as organizational beneficiaries. The number of samples in each organization was 10 people, 5 real entities and 5 legal entities. The study measures were Meyer and Allen’s (1991) organizational commitment survey with 24 items and effectiveness questionnaire with 15 items. The data were analyzed by SPSS 15 software and Spearman rank correlation test and regression of the data of the questionnaires and the hypotheses were tested. The results showed that there was a significant association between the dimensions of organizational commitment and organizational effectiveness in Municipalities and affective organizational commitment was highly correlated with organizational effectiveness

Three-Dimensional Simulation of Flow Field in Morning Glory Spillway to Determine Flow Regimes (Case Study: Haraz Dam)

Morning-glory spillways are usually used in dams constructed in narrow valleys or those on steeply sloped supports. Furthermore, one can adopt this type of spillway in cases where guiding and diversion tunnels of adequate diameter are available. One of positive characteristics of these spillways is that, their maximum capacity can be approached at relatively low head. This characteristic can be seen as an advantage in cases wherein maximum outflow from the spillway shall be limited. On the other hand, should water head on top of the spillway exceeds the project baseline head, changes in output discharge will be negligible. Morning-glory spillways are commonly used in large dam construction projects across Iran (e.g. Sefid-Rood Dam, Alborz Dam, Haraz Dam, etc.). Given that spillway is one of the most important axillary structures for dams, accurate and realistic characterization of the hydraulic conditions affecting them seems to be necessary. On this basis, the present research is aimed at accurate determination of flow behavior and discharge coefficient of morning-glory spillways from the flow inlet down to horizontal tunnel of the morning-glory spillway of Haraz Dam. For this purpose, the most significant hydraulic parameters (including flow depth, flow velocity, flow pressure at different sections of the spillway, and rate of outflow at spillway) will be determined. In this study, an effort was made to use the numerical model of Flow3D to numerically model three-dimensional flow based on physical model and actual data from one of the largest and most important morning-glory spillways for calibration and verification purposes, and determine accuracy of the numerical modeling and associated error with simulating the numerical model. Results of this study show that, the flow at morning-glory spillways is controlled in either of three modes: flow control at crest, orifice control, and pipe control

Zagreb equienergetic bipartite graphs

Let G be a graph with vertices v1, v2, . . . , vn and let di be the degree of vi. The Zagreb matrix of the graph G is the square matrix of order n whose (i, j)-entry is equal to di + dj if the vertices vi and vj are adjacent, and zero otherwise. The Zagreb energy ZE(G) of G is the sum of the absolute values of the eigenvalues of the Zagreb matrix. Two graphs are said to be Zagreb equienergetic if their Zagreb energies are equal. In this paper, we show how infinitely many pairs of Zagreb equienergetic bipartite graphs can be constructed such that these bipartite graphs are connected, possess an equal number of vertices, an equal number of edges, and are not cospectral.Publisher's Versio