bluuebunny/crossref_metadata_2025 huggingface dataset:
Building Model for the University of Mosul Computer Network Using OPNET Simulator
Authors: Hammoudi Modhar A.
Published: June 2022

This paper aims at establishing a model in OPNET (Optimized Network Engineering Tool) simulator for the University of Mosul computer network. The proposed network model was made up of two routers (Cisco 2600), core switch (Cisco6509), two servers, ip 32 cloud and 37 VLANs. These VLANs were connected to the core switch using fiber optic cables (1000BaseX). Three applications were added to test the network model. These applications were FTP (File Transfer Protocol), HTTP (Hyper Text Transfer Protocol) and VoIP (Voice over Internet Protocol). The results showed that the proposed model had a positive efficiency on designing and managing the targeted network and can be used to view the data flow in it. Also, the simulation results showed that the maximum number of VoIP service users could be raised up to 5000 users when working under IP Telephony. This means that the ability to utilize VoIP service in this network can be maintained and is better when subjected to IP telephony scheme
The Effect of Spark Timing on the Spark Ignition Engine Performance
Authors: Khalefa Rafeq Ahmad
Published: June 2022

In this work the effect of spark timing on the spark ignition engines is investigated by computer simulation and experimental test for speeds of (1500,2000,2500,3000 and 3500)rpm at spark timing of (20o,30o,40o,50o and 60o) before TDC for each speed. This is done in order to find a suitable  mathematical expression for spark ignition advancing with respect to the speed of the engine to predict the correct ignition advance  as in real engines .The results showed that the method of using a mathematical expression is more realistic and reasonable  comparing  with the results obtained by other workers.
Dualism of Spirit-Material in Arabic Islamic Architecture Analytical Study for Samarra City through different Eras
Authors: Yaseen Rashed H.
Published: June 2022

Most of the current studies of Arabic Islamic architecture indicates different theoretical bases, whether in its definition or analyses, between different thinkers and researchers, dependable on the cultural, thoughtful and ideological   bases of related references; thus, we can find Arabic Islamic architecture, both in urban planning and architectural point of view, in the light of deferent visions  of: western thinkers, as an artistic forms and compositions, Arab national pioneers, analyzing its components on Arab society values, declined from its establishment of Arab desert and its impact on its rural culture; and radical Muslims thinkers restricting it on certain historical period, trying to reform it according to blocked theoretical rules, giving up its capability to development, sustainability and renewal.The reason of all these problems is the ambiguity of the comprehensive emphasizes of one the most effective bases of Arabic Islamic architecture, which is the balance between the poles of spirit-material dualism; so that, some thinkers stood on one pole of this dualism, trying to study it through this defect point of view; meanwhile others stand on the other pole; without conscious or preconscious of the other pole, consequently the result of this hard shortage in identifying the bases of Arabic Islamic architecture in most of these studies.This research concludes an example of Arabic Islamic cities, Samarra City, which passed on different ages, lasting from Abbasid age to modern age, reflecting different spiritual and materialistic changes according to change in political, economic, social and cultural regimes; all these indicated by the vital ruins, obviously translating these changes, where it appoints the importance of the  balance between  both poles of this dualism, to illustrate vision of Arabic Islamic City, through these ages.
Finite Element Analysis for Bearing Capacity of Rectangular Footing Resting Near Sloped Cohesive Soil
Authors: Abbas Jawdat K. , Sabbar Ayad S.
Published: June 2022

Finite element method is used to investigate the ultimate bearing capacity of rectangular footing resting on cohesive soil near slope. The effect of footing aspect ratio (L/B), distance ratio (b/B), and slope angle (β) on the bearing capacity are calculated. A new reduction factor (Rs) is proposed to compute the ultimate bearing capacity for rectangular footing adjacent to slope of cohesive soil from ultimate bearing capacity for similar rectangular footing resting on ground level of cohesive soils. This study shows that the ultimate bearing capacity for rectangular footing adjacent to slope of cohesive soils decreases when slope angle (β) and aspect ratio (L/B) increases.  Also the ultimate bearing capacity increases when the distance ratio (b/B) increases. Finally, the effect of slope diminishes as the distance ratio (b/B) equal, or exceeds 0.75
Specific Energy Absorbed Study of Aluminum (2024-351T) Tubes Alloy under Lateral Crush
Authors: Ghaidan Ayad Arab
Published: June 2022

This paper aims to find SEA (Specific Energy Absorber) for lateral crushing (statically) behavior for Aluminum (2024-T351) alloy with difference lengths (10, 20, and 30 mm). An experimental, finite element simulation, and theoretical models present to find force-deformation curves and then find SEA for difference lengths. Experimental results more agreements with finite elements simulation and theoretical when length of tubes is increase for load deformation curve, because when the length increases the plastic region increase with initial plastic collapse load (Pc). The experimental, ANSYS simulation and theoretical results have plotted and it has seen that the theory also underestimates the ANSYS results because in theoretical model, is customary to assume that the material is perfectly plastic; therefore, the finite element simulation might predict the experimental results better than the theoretical one. The results show that light density Aluminum alloy is suitable for SEA
Hardware Implementation Of Line Clipping A lgorithm By Using FPGA
Authors: Dawod Amar I.
Published: June 2022

The computer graphics system performance is increasing faster than any other computing application. Algorithms for line clipping against convex polygons and lines have been studied for a long time and many research papers have been published so far. In spite of the latest graphical hardware development and significant increase of performance, the clipping is still a bottleneck of any graphical system. Therefore, its implementation in hardware is essential for real time applications. In this paper clipping operation is discussed and a hardware implementation of the line clipping algorithm is presented and finally formulated and tested using Field Programmable Gate Arrays (FPGA). The designed hardware unit consists of two parts: the first is positional code generator unit and the second is the clipping unit. Finally it is worth mentioning that the designed unit is capable of clipping (232524) line segments per second.
A Study of ZigBee Network Topologies for Wireless Sensor Network with One Coordinator and Multiple Coordinators
Authors: Nourildean Shayma Wail
Published: June 2022

Wireless Sensor Networks have become a cheap and viable solution for a variety of applications, including monitoring of critical infrastructure (water supplies, power grids, traffic networks, agriculture, telecommunications systems etc.), wildlife habitat monitoring, industrial quality control, disaster recovery situations, military applications and much more. The ZigBee network model is more suitable for battery capacity, bandwidth and computing power’s limitations of WSN. In the present investigation, the modeled system was simulated using OPNET Modeler v14 to obtain the results in order to study the performance of the system in terms of tree routing, mesh routing, multiple coordinator system and if one of the coordinators was failed. The results showed that tree routing was more suitable for WSN than the mesh routing and mobility of end device was better in multiple coordinator system.
Improvement of Production Quality by using Six Sigma Technique: Applied Study in the Medical Syringes Factory – Babylon
Authors: Ali Sawsan S. A. , Salih Salim A. , Abdulla Zuhair H.
Published: June 2022

As a result of lack of conformity of the outer diameter of the filling piston ofplastic syringe to the specifications set out in the design map and the increased demandfor its products from the Medical syringes factory – Babylon. The research conductsthe necessary investigations and analysis of the production process as most of the unitsrejected by fact that the outer diameter of the filling piston is smaller than the minimumspecification and units returned to work due to the fact that the outer diameter largerthan the upper limit of the specification.

The research aims firstly to examine the outer diameter of the filling pistonthrough the use of the control chart of the variables represented by the average , and itsimpact on the production process capability because the increase in diameterspecification leads to an increase in the pressure imposed on the lining of the cylinder,causing difficulty in piston movement and a decrease in diameter specification whichleads to loose the process capability to prevent leakage of fluid, causing air to enter aswell as to speed the movement of the piston, which negatively affects human life inboth cases. Secondly, study the possibility of improving the production processcapability by using advanced levels of the sigma.The results showed that the production process in the case of a disciplined andfollows a normal distribution, the pointer of the production process capability is equalto (0.55) and the factory works within the level of Sigma equal to (1.65). Theproportion of a damaged product is (15.8 %) and rework (0.99 %).In order to reduce the proportion of damaged product, this paper introduces aquality plan depending on ( ±0.025) as tolerance limits instead of ( ±0.05) to increasesigma level by 202%.
Development of New Algorithm for Communication Networks Reliability Based on Tie Set Method Combined with a Modified Flooding Algorithm
Authors: Mahmood Musaria Karim
Published: June 2022

This paper presents a new method to calculate the network reliability based on the use of flooding routing algorithm. Tie Set (TS) method is one of probabilistic reliability method, is combined with flooding technique to generate an efficient new method to estimate reliability. The proposed method can be generalized to be active with others reliability methods such as Cut Set, and Enumeration methods. TS method depends on two factors: finding the TS paths and the inclusion-exclusion expansion equations. A modified flooding algorithm is used to generate the group of TS paths which is then used to find the reliability. It will be demonstrated by a case experiment the simplicity and effectiveness of the flooding technique to generate paths between a pair of nodes in a graphical representation of a communication network.
New Design of Mobile Robot Path Planning with Randomly Moving Obstacles
Authors: Salih Thair Ali , Nayef Mustafa Zuhear
Published: June 2022

The navigation of a mobile robot in an unknown environment has always been a very challenging task. In order to achieve safe and autonomous navigation, the mobile robot needs to sense the surrounding environment and plans a collision-free path. This paper focuses on designing and implementing a mobile robot which has the ability of navigating smoothly in an unknown environment, avoiding collisions, without having to stop in front of obstacles, detecting leakage of combustible gases and transmitting a message of detection results to the civil defense unit automatically through the Internet to the E-mail. This design uses the implementation of artificial neural network (ANN) on a new technology represented by Field Programmable Analog Array (FPAA) for controlling the motion of the robot. The robot with the proposed controller is tested and has completed the required objective successfully.
Torsional Strengthening of RC Beams with CFRP Wrap
Authors: Mohammad Khalaf Ibrahem , Al-Sulayfani Bayar Jaafar
Published: June 2022

Many studies have been performed in recent years on strengthening RC (reinforced concrete) beams in shear and bending using FRP (Fiber Reinforced Polymer) wraps and laminates. Torsional strengthening, however, has not attracted as much attention. The current study on the torsional strengthening of reinforced concrete beams was performed on reinforced concrete beams wrapped by CFRP (Carbon Fiber Reinforced Polymer). Several different configurations were used for the CFRP and the torque-twist angle paths of the beams were recorded to failure. The failure modes and the increase in the torsional strengths are presented in this paper.
Experimental and Simulation of Dual Phase Flow in Venture Convergence-Divergence Nozzle
Authors: Abed Fayadh Mohamed , Zedan Maki Hag , Mohammed Ghazi-Yousif- , Salman Seenaa Khudhayer
Published: June 2022

In steam power plants, and high pressure high temperature water flow, phase change takes place resulting in bubbly flow. Such flow causes vibration and noise in the conduits. The present study emphasized on cavitations during a dual phase flow (water-vapor) with a variation of velocities at different conditions in converge-divergence nozzle. The investigation was carried out experimentally and numerically, by CFD simulation. A transparent material is used of PMMA in order to visualize the various regions of the flow. Furthermore, the effect of flow velocities on vibration and noise was evolved in the experimental measurements. The CFD simulation model of this problem is defining a dual compressible viscous flow with k-epsilon model for the turbulence modeling. The analyses of the simulation results and the experimental observation have been seen to be comparatively conscionable in the cavitation zone and the estimation of the throat pressure cavitations during a dual phase flow with a variation of mass transfer conditions. A model were combined with a linear viscous turbulent model for the mixed fluids in the computational fluid dynamics software. A CFD Code with modified user intervention is used to simulate steady cavitation. Some of the models were also tested using a three dimensional CFD code in configurations of cavitation on three-dimensional a converge-diverge sections. The pressure distributions and volume fractions of vapor at different cavitation numbers were simulated, which agreed well with experimental data.
Effect of Austenizing and Tempering Heat Treatment Temperatures on the Fatigue Resistance of Carburized 16MnCr5 (ASTM 5117) Steel
Authors: Sultan Jamal Nayief
Published: June 2022

The present investigation deals with the study of the effect of austenizing and tempering heat treatment temperatures on the fatigue resistance of carburized 16MnCr5 steel. Rotating bending fatigue specimens were machined from 16MnCr (ASTM 5117(steel rod, and pack carburized at 900°C for 2 hours soaking time. Carburized specimens were then austenized at 900°C for one hour, water quenched, reaustenized at temperatures 750°C, 800°C and 900°C for one hour, then tempered at 200°C temperature. Other carburized specimens were tempered by heating to 760°C temperature, water quenched to room temperature, then tempered at temperatures 200°C, 300°C, and 400°C for one hour. Austenized and tempered steel specimens after carburization as well as uncarburized steel specimens were then tested by rotating bending fatigue machine up to fracture under different stress levels (200, 250, 300, 350, 400) Mpa. Experimental results showed that fatigue resistance of austenized steel specimens after carburization process has been increased, and the crack length developed on the specimen surfaces was decreased with an increase in austenizing temperature up to 800°C, due to lath martensitic microstructure formation, beyond this temperature fatigue resistance was decreased and crack lengths were increased due to the grain coarsening of the lath martensite. It was also concluded that fatigue resistance of steel specimens that have been tempered after carburization process was increased, while crack lengths due to fatigue have been decreased with an increase in tempering temperatures due to the formation of tempered martensite and troostitic microstructure. The results also revealed that uncarburized steel specimens showed a lower fatigue resistance and a higher crack lengths than those austenized and tempered specimens after carburization.
Radical Activation of Ammonia and Water at Bismuth(II)
Authors: Yang Xiuxiu , Reijerse Edward , Bhattacharyya Kalishankar , Leutzsch Markus , Kochius Markus , Nöthling Nils , Busch Julia , Schnegg Alexander , Auer Alexander , Cornella Josep
Published: June 2022

The development of unconventional strategies for the activation of ammonia (NH3) and water (H2O) is of capital importance for the advancement of sustainable chemical strategies. Herein we provide the synthesis and characterization of a Radical Equilibrium Com-plex based on bismuth featuring an extremely weak Bi‒O bond, that permits the in situ generation of reactive Bi(II) species. The en-suing organobismuth(II) engages with various ammines and alcohols and exerts an unprecedented effect onto the X‒H, leading to low BDFEX-H. As a result, radical activation of various N‒H and O‒H bonds—including ammonia and water—occurs in seconds at room temperature, delivering well-defined Bi(III)-amido and -alkoxy complexes. Moreover, we demonstrate that the resulting Bi(III)‒N complexes engage in a unique reactivity pattern with the triad of H+, H‒ and H· sources, thus providing alternative pathways for main group chemistry.
Continuous Addition Kinetic Elucidation: Catalyst and Reactant Order, Rate Constant, and Poisoning from a Single Experiment
Authors: Williams Peter , Killeen Charles , Chagunda Ian , Henderson Brett , Donnecke Sofia , Munro Wil , Sidhu Jaspreet , Kraft Denaisha , Harrington David , McIndoe Scott
Published: June 2022

Kinetic analysis of catalytic reactions is a powerful tool for mechanistic elucidation but is often challenging to perform. Establishing order in a catalyst is achieved by running several reactions at different loadings, which is complicated by the challenge of maintaining consistent run-to-run experimental conditions. We present Continuous Addition Kinetic Elucidation (CAKE), which involves steadily injecting catalyst into the reaction, and following reaction progress over time to generate a plot whose shape is dependent only on the order in reactant and in catalyst. Modelling the curve (using a convenient web tool) allows the catalyst and reactant order to be determined, as well as the rate constant and the amount of any catalyst poison present.
Pyridine N-oxides as HAT reagents for photochemical C-H functionalization of electron-deficient heteroarenes
Authors: Ciszewski Łukasz , Gryko Dorota
Published: June 2022

Pyridine N-oxides only recenly marked their presence in the photocatalysis outbreak, mainly serving as oxypyridinium salt precursors. Herein, their unique reactivity as a hydrogen atom transfer reagent in photochemical, Minisci-type alkylation of electron-deficient heteroarenes is unveiled. The formation of an EDA complex between a heterocyclic substrate and N-oxide precludes the need for a photocatalyst. The developed method allows for a broad range of radical precursors to be used, namely alkanes, alkenes, amides, and ethers, for efficient alkylation of azines.
Water Structure in the Electrical Double Layer and the Contributions to the Total Interfacial Potential at Different Surface Charge Densities
Authors: Rehl Benjamin , Ma Emily , Parshotam Shyam , DeWalt-Kerian Emma L. , Liu Tianli , Geiger Franz M. , Gibbs Julianne M.
Published: June 2022

The electric double layer governs the processes of all charged surfaces in aqueous solutions, however elucidating the structure of the water molecules is challenging for even the most advanced spectroscopic techniques. Here, we present the individual Stern layer and diffuse layer OH stretching spectra at the silica/water interface in the presence of NaCl over a wide pH range using a combination of vibrational sum frequency generation and heterodyned second harmonic generation techniques and streaming potential measurements. We find that the Stern layer water molecules and diffuse layer water molecules respond differently to pH changes: unlike the diffuse layer, whose water molecules remain net-oriented in one direction, water molecules in the Stern layer flip their net orientation as the solution pH is reduced from basic to acidic. We obtain an experimental estimate of the non-Gouy-Chapman (Stern) potential contribution to the total potential drop across the insulator/electrolyte interface and discuss it in the context of dipolar, quadrupolar, and higher order potential contributions. We quantify how these contributions result in a considerable influence on the vibrational lineshapes. Our findings show that a purely Gouy-Chapman (Stern) view is insufficient to accurately describe the electrical double layer of aqueous interfaces.
Choice of Transport Mode By Residents of The City of Asmara-Eritrea
Authors: Ghebremeskel Fitsum , Mehreteab Habteab Tekie
Published: June 2022

The choice of mode for commuters is a crucial thing and the choice of transportation mode is affected by many factors such as: gender, income, travel cost , travel time ...etc. This paper investigates factors influencing mode choice behavior of the residents of Adi -Guaedad and its environs towards different destinations of the city of Asmara. Adi -Guaedad is one of the suburbs of the city of Asmara. Multinomial logit regression model was used to study the choice of transport mode among 400 residents of this locality. The mode choice is between bicycle, public bus and minibus. The results of this study shows that gender, monthly income, occupation, trip purpose, residential location of the respondent, waiting time , access, egress, travel time (in minutes), travel cost, and distance (kilometers) to destination are the factors that statistically and significantly affect the probability that a commuter uses a bicycle, a public bus or minibus to his/her destination.
Analysis of Rural Women's Participation in Income Generating Activities in District Mardan
Authors: Awan Naila , Inam Shahrukh , Saeed Afeera
Published: June 2022

Purpose: The contemporary research was intended to survey the countryside women's participation in monetary creating activities and had explored socio-economic obstacles faced by them while carrying out their home activities.

Methodology: Survey was carried out in two purposively selected villages in the Mardan district of Khyber Pakhtunkhwa province. by Usage of a simple random technique, targeting a total of 112 women respondents’ primary data were collected with the help of a semi-structured interview schedule and analyzed with the help of descriptive statistics techniques.

Findings: The study found that the literacy rate was low among the sampled respondents therefore livestock rearing and embroidery work was the most common income-generating activities among the respondents. There were no formal and recognized training centers or any other guidance providers for the women in the study area. Moreover, the lack of marketing facilities had restrained the respondents to sell out their products at cheaper prices, therefore, sampled respondents faced problem/s in performing income-generating activities in the study area.

Implications: credit and marketing facilities can also be promoted for the sustainable business advancement of the rural women so they can sell their products at reasonable prices to improve their socio-economic conditions.
Evelyn Waugh's Brideshead Revisited: Sites of Memory and Tradition
Authors: Sánchez Fernández Carlos
Published: June 2022

In this article, it is my intention to analyse two theoretical notions related to space, namely Pierre Nora’s idea of the site of memory and Gaston Bachelard’s thoughts on space and the house, as applied to Evelyn Waugh’s Brideshead Revisited (1945). I base my analysis on the symbolic value of the English country house with regard to the interwar English aristocracy and upper classes as depicted in this novel; that is, as a site of memory. I consider the point of view of three characters: Charles Ryder, the novel’s first-person narrator, Lord Sebastian Flyte, Ryder’s intimate friend, and Lord Marchmain, Sebastian’s father, who triggers the novel’s sudden and unexpected ending through his deathbed conversion to Roman Catholicism, his family’s creed. My conclusion links the decline of aristocratic and Christian ideals with the disappearance of communities of memory and their traditions after the Second World War.
Fundamentos de gerencia aplicados a salud ( PARTE II)
Authors: Villavicencio-Caparó Ebingen , Correa-Carrera Katherine , Espín-Cazar Angela  Gabriela
Published: June 2022

El objetivo del presente artículo es fijar posición respecto al amplio bagaje que implica el mercadeo o marketing, muchas personas piensan que esta disciplina es hacer publicidad, cosa totalmente falsa, en el presente artículo analizamos los aspectos más relevantes del planeamiento estratégico del marketing, mediante la herramienta FODA, luego profundizamos en los datos que se necesitan para hacer un estudio de mercado, a continuación presentamos las estrategias que integran la gerencia al marketing y finalmente  la gestión del crecimiento empresarial. Este es el segundo de una serie de tres artículos que hemos denominado Fundamentos de gerencia.
Impacto del Covid-19 en las organizaciones: innovación y emprendimiento en la ciudad de Cuenca.
Authors: Ledesma Andrade Anthony , Ordoñez Valencia Hugo Javier
Published: June 2022

El presente artículo científico nace con la necesidad de implementar una investigación de un nivel alto de confiabilidad y contenido sobre el impacto del covid-19 en las organizaciones con un enfoque hacia el emprendimiento y la innovación en la ciudad de Cuenca, ya que la pandemia causó retos y amenazas a las empresas de una manera compleja y a otras las hizo optar por ver el lado positivo de todo este acontecimiento para sacarle provecho. El objetivo de la elaboración de este artículo es brindar de manera estratégica la difusión de contenido científico hacia el tema a escribir. La metodología será aplicada es una investigación descriptiva, el método será aplicado inductivamente, con un enfoque cuantitativo de la mano con la técnica mediante la investigación de bases científicas. La manera práctica y focalizada de desarrollar este problema de la investigación, brindará mayor efectividad en el alcance de objetivos, debido a que se mantiene guiado a base de herramientas administrativas y metodológicas.
Pola Sebaran Permukiman Kumuh di Kabupaten Tangerang dan Keragaman Spasial Faktor yang Mempengaruhinya
Authors: Adiputra Muchamad Subhans , Rustiadi Ernan , Pravitasari Andrea Emma
Published: June 2022

Rapid development and high population density are among the factors that cause slum settlements Tangerang Regency. Factors that cause slum settlements in Tangerang Regency have not been identified specifically and the handling of slum settlements are still seen to be uniform between regions. The purpose of this research is to identify the pattern of distribution of slum settlements in Tangerang Regency and the spatial diversity of factors that influence it. Methods used to identify the distribution pattern of slums are Moran's Index, Moran's Scatterplot, and Local Indicator Spatial Autocorrelation. Meanwhile, to understand the spatial diversity of the factors that affect slum settlements, multiple regression analysis was performed using forward stepwise regression, followed by Geographically Weighted Regression (GWR) analysis. Results shows that the pattern of spatial distribution of slum settlements in 2016 and 2018 was concentrated in the northern and southern areas of Tangerang Regency. The distribution pattern of slums shows a centered movement towards the district border with the surrounding areas, namely DKI Jakarta, Tangerang City, and South Tangerang City. The relationship between the Village Development Index and the Land Value Zone has a fairly weak positive correlation, the relationship between the Kelurahan Development Index and the percentage of slum area does not have a significant correlation, while the Land Value Zone with the percentage of slum area has a weak positive correlation. Slum settlements in Tangerang Regency are influenced by physical and non-physical factors including the number of slum location points, the percentage of residential buildings that do not have a building permit, and the percentage of areas affected by inundation. The results of the GWR analysis show that each factor that has a significant influence on slum settlements in Tangerang Regency has a different influence locally in each observed area.
Primer registro documentado de la Parina Chica (Phoenicoparrus jamesi, Phoenicopteriformes: Phoenicopteridae) en Santiago del Estero, Argentina
Authors: Quiroga Oscar Bernardo , Llugdar Jorge Emir
Published: June 2022

En Argentina la familia Phoenicopteridae está representada por el flamenco (Phoenicopterus chilensis) de amplia distribución geográfica, la Parina Grande (Phoenicoparrus andinus) y la Parina Chica (Phoenicoparrus jamesi), restringidas a ambientes de Puna y Altos Andes. Esta última especie presenta registros en nueve provincias argentinas, habitando lagos y lagunas salobres a unos 3500 a 4000 msnm, donde se reproduce. Durante una visita a una laguna del centro-oeste de Santiago del Estero registramos nueve individuos de esta especie junto a otras aves acuáticas y de humedales. Este registro representa el primero para esta provincia y podría estar relacionado con desplazamientos temporales que realizan hacia alturas inferiores durante el invierno, ya que en Laguna de Mar Chiquita y Bañados del Río Dulce (Córdoba) suelen observarse en gran número en esa época del año.
Classification, suitability and zoning of crops in the high course of the Paraíba River Basin – Brazil
Authors: Wagner Rodolfo de Araújo  , Raimundo Mainar de Medeiros  , Romildo Morant de Holanda  , Luciano Marcelo Fallé Saboya  , Moacyr Cunha Filho  , Manoel Viera de França
Published: June 2022

Characterization, agroclimatic zoning and crop suitability are important for defining the agricultural potential of a given region or location, defining the planting season and types of crops suitable for the region. Based on the results of the Water Balance and the corresponding evapopluviogram, it was used to carry out the agroclimatic zoning and its aptitudes for crops suitable for planting in the area of ​​the hydrographic basin of the upper course of the Paraíba River. Monthly and annual rainfall data series were used, collected by the Northeast Development Superintendence and provided by the Executive Agency for Water Management of the State of Paraíba. Municipality to municipality). The average air temperature values ​​estimated by the Estima_ T software. The region has an annual water deficit of 794.0 mm, with no storage and excess of water in the soil. The indices of aridity, humidity and water were 65.38; 0.00 and -39.23%, respectively. The climate was classified as Semi-arid, Megathermal, with little or no excess of water and with 29.41% of the potential annual evapotranspiration concentrated in the hottest quarter of the year. There was restricted aptitude for the cultivation of pineapple, cashew, beans and corn; bananas and sugarcane are unsuitable for cultivation, while herbaceous cotton has moderate conditions. To ensure profitable agricultural productivity, the supply of water through irrigation is essential.
First record of Gordius sp. (Nematomorpha: Gordioidea) from Balıkesir Province, Turkey
Authors: ÇIRAK Veli , SCHMİDT-RHAESA Andreas , YILDIZ Kader
Published: June 2022

The nematode phylum Nematomorpha contains organisms which are also known as horsehair worms or Gordian worms. We report here a male specimen of Gordian worm from a horse farm in Balıkesir province, Turkey. The body of the specimen was brown in color and the length was about 38 cm. After fixed in ethyl alcohol (80%) scanning electron microscopic (SEM) observations were carried out. Based on macroscopic and SEM findings the specimen was identified as Gordius sp.. As merely little data is available on these organisms in Turkey, our finding will contribute to the existing knowledge in terms of the local diversity of this taxon.
INVENTARISASI HEWAN INVETEBRATA PADA FILUM NEMATHELMINTHES
Authors: RAHMADINA RAHMADINA , RENALDI FAJAR
Published: June 2022

This journal discusses the theme of the Nemthelminthes phylum. nemathelminthes is a phylum that was once used in the animal kingdom (Animalia). Its members include a variety of worms known as gilig worms: animals with long cylindrical bodies, even so long that the name 'Nemathelminthes' appears. Which means "threadworm" (from Greek). His body is not sprouting. in this phylum, there are two classes, nematodes and nematomorphs. Nematodes have been found in the muscles outside the cells and not epithelial cells. There are no cilia here. An independent living nematode has a compound mouth and several tools and tastes and eyes. Gilig worms that live parasites, their body structure is simpler. The digestive tract is more complete and precisely divided into regions such as the mouth, oral cavity, pharynx, esophagus, small intestine, rectum, and body structure. The larvae live parasites on the human body or arthopoda, and after adulthood these worms live freely in fresh water and sea water.
Wertschöpfungskette der additiven Fertigung - Entwicklung einer KMU-spezifischen Wertschöpfungskette für additiv gefertigte Endbauteile aus Metall
Authors:   Technische Universität Hamburg, Mai Tim Niklas , Brylowski Martin , Nagi Ayman , Kersten Wolfgang
Published: June 2022

Additive Fertigungsverfahren ermöglichen durch das schichtweise Auftragsprinzip die wirtschaftliche Herstellung komplexer Bauteile in geringen Stückzahlen und gewinnen in der Industrie zunehmend an Bedeutung. Insbesondere kleine und mittlere Unternehmen (KMU) profitieren von dem hohen Individualisierungspotenzial und können neue Geschäftsmodelle erschließen. Dem flächendeckenden Einsatz additiver Verfahren stehen allerdings hohe Fertigungskosten und technologische Herausforderungen gegenüber. Die Forschung konzentriert sich derweil auf die singuläre Optimierung einzelner Prozessschritte der additiven Fertigung und bietet für KMU keine ausreichende Hilfestellung. Vor diesem Hintergrund beschäftigt sich der vorliegende Beitrag mit der Entwicklung einer verfahrensübergreifenden Wertschöpfungskette der additiven Fertigung für KMU. Auf Basis einer systematischen Analyse wissenschaftlicher Literatur wurden relevante Fertigungsverfahren untersucht und eine verfahrensübergreifende Wertschöpfungskette abgeleitet. Die Ergebnisse wurden durch leitfadengestützte Experteninterviews verifiziert und zentrale Forschungs- und Entwicklungsbedarfe hergeleitet.
Harga Diri dan Konformitas Terhadap Pembelian Impulsif Barang Tiruan Produk Mode pada Remaja
Authors: Putri Shabrina Mutiarta , Ramadhani Ayunda , Rasyid Miranti
Published: June 2022

This study aimed to determine the impact of self-esteem and conformity on impulsive buying counterfeit fashion product of teenagers. This study used quantitative approach. Research population consist of 150 and consist of 92 teenagers that chosen using purposive sampling method. Data collection method used in this study is impulsive buying, self-esteem, and conformity scale. Research data analyzed with multiple linear regression by the program Statistical Package for Social Science (SPSS) 25.0 for Windows. The results showed that: (1) there is significant impact of self-esteem and conformity towards impulsive buying with F = 37.800, R2 = 0.459, p = 0.000; (2) there is a significant impact of self-esteem on impulsive buying with beta coefficient = -0.179, and t count < t table (-2.077 < 1.987) and p value = 0.041 (p < 0.05); (3) there is a significant impact of conformity on impulsive buying with beta coefficient = 0.583, t count > t table (6.779 > 1.987) and P value = 0.000 (p > 0.05). Contribution of self-esteem and conformity on impulsive buying of teenagers in Indonesia amounted to 0.459 (45.9 percent).Penelitian ini bertujuan untuk mengetahui pengaruh harga diri dan konformitas terhadap pembelian impulsif barang tiruan produk mode pada remaja. Penelitian ini menggunakan pendekatan kuantitatif. Populasi pada penelitian ini adalah 150 remaja dan sampel pada penelitian ini adalah 92 remaja di Indonesia yang dipilih dengan menggunakan teknik purposive sampling. Metode pengumpulan data yang digunakan adalah skala pembelian impulsif, harga diri dan konformitas. Teknik analisa data menggunakan uji analisis regresi linear berganda dengan bantuan program Statistical Package for Social Sciences (SPSS) 25.0 for windows. Hasil penelitian menunjukkan bahwa: (1) ada pengaruh harga diri dan konformitas terhadap pembelian impulsif yaitu dengan nilai F = 37.800, R2 = 0.459, p = 0.000; (2) ada pengaruh signifikan harga diri terhadap pembelian impulsif dengan koefisien beta = -0.179, serta nilai t hitung < t tabel (-2.077 < 1.987) dan nilai p = 0.041 (p < 0.05); (3) ada pengaruh signifikan konformitas terhadap pembelian impulsif dengan nilai koefisien beta = 0.583, nilai t hitung > t tabel (6.779 > 1.987) dan nilai p = 0.000 (p < 0.05). Kontribusi harga diri dan konformitas dengan pembelian impulsif pada remaja adalah sebesar 0.459 (45.9 persen).
Pengaruh Gaya Kepemimpinan Situasional dan Keadilan Interaksional Terhadap Kinerja Karyawan
Authors: Irpan Irpan , Adriansyah Muhammad Ali , Sanjaya Arwin
Published: June 2022

This study aims to empirically examine the influence of situational leadership style and interactional justice on employee performance in East Kutai Regency. The subjects of this study were 176 employees at PT X in East Kutai Regency who were selected through quota sampling technique. The measuring instrument used in this study uses an employee performance scale, a situational leadership style scale and an interactional justice scale. The data analysis technique used multiple linear regression statistical test. The results of the full model study show that there is an influence between situational leadership style and interactional justice on employee performance, namely the F count = 33.128 > F table = 3.05, R square = 0.277, and P = 0.000. In the results of the gradual model regression test, it was found that there was a significant influence between situational leadership style on employee performance, namely the value of beta (β) = 0.507, T count = 7.787 > T table = 1.654 and P = 0.000. Then the interactional justice on employee performance shows a significant effect, namely the value of beta (β) = 0.217, T count = 3.337 > T table = 1.654 and P = 0.001. Penelitian ini bertujuan untuk menguji secara empirik ada atau tidaknya pengaruh gaya kepemimpinan situasional dan keadilan interaksional terhadap kinerja karyawan di Kabupaten Kutai Timur. Subjek penelitian ini adalah 176 orang karyawan pada PT X di Kabupaten Kutai Timur yang dipilih melalui teknik kuota sampling. Alat ukur yang digunakan dalam penelitian ini menggunakan skala kinerja karyawan, skala gaya kepemimpinan situasional dan skala keadilan interaksional. Teknik analisa data menggunakan uji statistik regresi linier berganda. Hasil penelitian model penuh menunjukkan terdapat pengaruh antara gaya kepemimpinan situasional dan keadilan interaksional terhadap kinerja karyawan yaitu dengan nilai F hitung = 33.128 > F tabel = 3.05, R square = 0.277, dan P = 0.000. Pada hasil uji regresi model bertahap didapatkan adanya pengaruh yang signifikan antara gaya kepemimpinan situasional terhadap kinerja karyawan yaitu dengan nilai beta (β) = 0.507, T hitung = 7.787 > T tabel = 1.654 dan P = 0.000. Kemudian pada keadilan interaksional terhadap kinerja karyawan menunjukkan pengaruh yang signifikan yaitu dengan nilai beta (β) = 0.217, T hitung = 3.337 > T tabel = 1.654 dan P = 0.001.
Budaya Organisasi dan Keterlibatan Karyawan Terhadap Loyalitas Kerja
Authors: Manikotama Annisa R , Lubis Hairani , Rahmah Dian Dwi Nur
Published: June 2022

Generasi millenial merupakan generasi yang mendominasi dunia kerja. Generasi millenial sendiri di dunia kerja dikenal kurang memiliki loyalitas terhadap pekerjaannya. Penelitian ini bertujuan untuk mengetahui pengaruh budaya organisasi dan keterlibatan karyawan terhadap loyalitas kerja pada karyawan generasi millenial di Kota Balikpapan. Responden penelitian ini adalah 100 orang karyawan generasi millenial di Kota Balikpapan yang dipilih dengan menggunakan teknik purposive sampling. Alat ukur yang digunakan dalam penelitian ini adalah skala loyalitas kerja, skala budaya organisasi, dan skala keterlibatan karyawan. Teknik analisa data menggunakan uji regresi model berganda, yaitu dengan nilai F hitung = 104.667 > F tabel = 3.09, R square = 0.683, dan p = 0.000. Hasil tersebut menunjukkan bahwa terdapat pengaruh antara budaya organisasi dan keterlibatan karyawan terhadap loyalitas kerja pada karyawan millennial di Kota Balikpapan.
Work Family Konflik Pada Pekerja Wanita di Era Modern
Authors: Rozana Anna , Purnama Hendra
Published: June 2022

Modern times come with many changes in human life. Changes that really apparent are changes in human roles, changes in our social, working, and educational roles. Now we can see so many women in working forces with married status. Therefore, we need research about how these women can divide their role as an employee and their role as a housewife with their responsibilities in domestic area. The method we used in this research is descriptive research, and we used work-family conflict scale created by Greenhouse and developed by Carlson, et al as a measurement tool. In discussion section we will see how many working women with have married status that feel conflicted about their roles, how it related to work-family conflict construct, and how it related to other variables. The result from this research is the amount work-family conflict in woman employee that already married in Bandung is considerably low, but we can see that although work-family conflict does not have strong relationship with subjective¬ well-being, work-family conflict has an important role in dictating work satisfaction in woman with married status.Zaman modern telah menghadirkan berbagai perubahan dalam kehidupan manusia. Perubahan yang sangat jelas terlihat adalah perubahan peran manusia dalam lingkup sosial, pekerjaan, dan pendidikan. Kita dapat melihat bahwa ada perubahan besar-besaran yang terjadi dalam jumlah pegawai wanita dengan status menikah. Sehingga dibutuhkannya penelitian mengenai bagaimana para wanita tersebut membagi peran antara peran sebagai karyawan dan peran sebagai ibu rumah tangga yang bertanggung jawab dalam ranah domestik. Penelitian ini dilakukan dengan menggunakan metode deskriptif dan menggunakan alat ukur work-family conflict scale yang dirancang oleh Greenhaus dan dikembangkan oleh Carlson, dkk. Dalam pembahasannya kita akan melihat seberapa banyak karyawan wanita dengan status menikah yang merasa mengalami konflik dan bagaimana kaitannya dengan work-family conflict dengan beberapa variable lainnya, pembahasan ini akan dilakukan dengan melakukan review terhadap beberapa penelitian. Hasil penelitian ini menunjukan bahwa tingkat work-family conflict pada karyawan wanita dengan status menikah di Bandung cenderung rendah. Walaupun work-family conflict tidak berpengaruh terhadap subjective well-being seseorang, tetapi kita dapat melihat bahwa work-family conflict memiliki peranan penting terhadap kepuasan kerja karyawan wanita dengan status menikah.
Psychological Capital and Non-Physical Work Environment on Millennial Generation Employees Work Engagement
Authors: Aprillie Azatil Aqmar Roemy , Lubis Hairani , Rahmah Dian Dwi Nur
Published: June 2022

The millennial generation is the generation that will dominate the world of work. However, currently the millennial generation is known as a generation that likes to change jobs. It takes a good work engagement so that the millennial generation can survive in their work. This study aims to empirically examine whether there is an influence of psychological capital and non-physical work environment on work engagement in the millennial generation in Samarinda City. The subjects of this study were 355 millennial generation employees who were selected using purposive sampling technique. The measuring instrument used in this research is the work engagement scale, psychological capital scale, and non-physical work environment scale. Data analysis technique using multiple model regression test resulted in calculated F value = 177.435 > F table = 3.02, adjust R square = 0.502, and p = 0.000. These results indicate that there is an influence between psychological capital and non-physical work environment on work engagement in the millennial generation in Samarinda City. Generasi milenial merupakan generasi yang akan mendominasi dunia kerja. Namun, saat ini generasi milenial dikenal sebagai generasi yang suka berpindah pekerjaan. Dibutuhkan keterikatan kerja yang baik agar generasi milenial mampu bertahan dalam pekerjaannya. Penelitian ini bertujuan untuk menguji secara empirik ada atau tidaknya pengaruh modal psikologis dan lingkungan kerja non fisik terhadap keterikatan kerja pada generasi milenial di Kota Samarinda. Subjek penelitian ini adalah 355 orang karyawan generasi milenial yang dipilih menggunakan teknik purposive sampling. Alat ukur yang digunakan dalam penelitian ini adalah skala keterikatan kerja, skala modal psikologis, dan skala lingkungan kerja non fisik. Teknik analisa data menggunakan uji regresi model berganda menghasilkan nilai F hitung = 177.435 > F tabel = 3.02, adjust R square = 0.502, dan p = 0.000. Hasil tersebut menunjukkan terdapat pengaruh antara modal psikologis dan lingkungan kerja non fisik terhadap keterikatan kerja pada generasi milenial di Kota Samarinda.