bluuebunny/crossref_metadata_2025_split huggingface dataset:
PENGARUH JIWA KEWIRAUSAHAAN DAN PENGGUNAAN MEDIA SOSIAL TERHADAP MINAT BERWIRAUSAHA MAHASISWA PENDIDIKAN BISNIS STAMBUK 2017 FAKULTAS EKONOMI UNIVERSITAS NEGERI MEDAN
Authors: Irwansyah Irwansyah , Sirait Laedy Nova Sartika 
Published: December 2021

Penelitian ini bertujuan untuk mengetahui seberapa besar pengaruh jiwa kewirausahaan dan penggunaan media sosial terhadap minat berwirausaha mahasiswa pendidikan bisnis Universitas Negeri Medan stambuk 2017. Teknik pengumpulan data yang dilakukan dengan cara test dan angket. Hasil analisisregresi berganda diperoleh persamaan Y = 6.792 + 0,276 X1 + 0,647 X2 + e. Selanjutnya koefisien determinasi (R2) 0,543 yang artinya adalah sebesar 54,3%variabel X1 dan X2 dapat menjelaskan minat berwirausaha mahasiswa (Y) dan sisanya sebesar 45,7% dijelaskan oleh variabel lainnya yang tidak di kaji dalampenelitian ini. Berdasarkan uji t diperoleh bahwa masing-masing variabel X1 terdapat pengaruh positif dan signifikan terhadap minat berwirausaha mahasiswa(Y) dengan nilai thitung >ttabel (2,271 >1,662) dan ada pengaruh positif dan signifikan antara variabel X2 terhadap hasil terhadap minat berwirausaha mahasiswa (Y) dengan nilai thitung>ttabel (7,257 >1,662). Sedangkan uji F diperoleh hasil bahwa ada pengaruh positif dan signifikan antara Jiwa Kewirausahaan (X1) dan Penggunaan Media Sosial (X2) terhadap Minat Berwirausaha Mahasiswa (Y)Pendidikan Bisnis 2017 dengan nilai Fhitung>Ftabel (51,135>3,10) dan nilai signifikansi (0,000<0,05).
Public Housing Environment and Depression: Case Study Bandar Baru Sentul
Authors: Ghazali Nur Masyitah , Marzukhi Marlyana Azyyati , Ling Oliver Hoon Leh , Weng Yinxue 
Published: December 2021

Depression is one of the common mental health problems worldwide, and in Malaysia, it is mostly from low-income groups. Due to this factor, most low-income groups in urban areas will reside in public housing due to high living costs. This study aims to understand the public housing environment's effect on mental health. The objectives are to study and analyses states of depression in public housing and its relationship with the surrounding built environment. This study was conducted at the Federal Territory of Kuala Lumpur, Malaysia. The questionnaire is an adaptation of Depression, Anxiety and Stress Scales (DASS-21). The sampling technique using homogenous sampling in the selected case study area. The selected area is based on several characteristics, which are housing typologies, green areas, and density. The collected data were analysed using correlation analysis and compared with the theoretical framework to study the relationship between the surrounding environment and depression. The results have shown that public housing's surrounding built environment is associated with depressive symptoms and mental health wellbeing. The findings also show that the surrounding built environment may contribute to mental health wellbeing and worsen existing sufferers' condition.
Keywords: built environment; urban; depression; mental health
Sustainable Material Awareness, Belief and Readiness in Housing Development
Authors: Vu Kim Dung Thi , Nguyen Bao Ngoc 
Published: December 2021

The construction industry is one of the industries accounting for a large proportion of Vietnam's overall GDP. It is also one of the least sustainable industries with extensive use of non-renewable resources. A study on the current situation of occupational awareness of sustainable building materials, identifying factors that prevent the diffusion of sustainable building materials is critical. The present study raised the theoretical basis of using sustainable building materials for the construction industry. Questionnaire data from 130 valid responses were used to carry out statistical analysis and make interpretation of results. The results indicate no significant difference between the two groups of respondents in awareness, belief, and readiness towards sustainable materials. The awareness and readiness levels are higher among construction practitioners who have experience. The present findings might suggest several courses of action to solve the problem of sustainable materials being overlooked. Our research suggests that it is essential for policymakers to encourage stakeholders to consider sustainability more seriously. The research findings have profound managerial implications that experienced practitioners might significantly impact the decision-making process in the realm of sustainable orientation. Future work should concentrate on integrating sustainable building materials into innovative and transformative practices in the construction industry.
Keywords: sustainable materials; awareness; belief; readiness; Vietnam; construction industry
Integration of Safety Aspects in the Maintenance Work of a Living Wall: An Overview of Practice and Challenges
Authors: Jun Han Loo , Zainul Abidin Nazirah 
Published: December 2021

Building maintenance is crucial to prolong a building's lifespan. Conducting the maintenance work can be dangerous, especially if it involves high-rise areas such as walls and roofs. Most literature discusses safety aspects at the construction site, while the safety aspects of maintenance work, which occur after occupancy, received less attention. This paper discusses the potential of integrating safety aspects into the maintenance work of a living wall. Living wall system (LWS) is one of the green design aspects in which the wall is designed to allow for vegetation growth. Maintenance works of a living wall involve various risks especially working in high or difficult places. This paper reviews the maintenance process and techniques adapted for maintaining the living wall through literature. This paper presents the safety practices that have the potential to reduce the risks of conducting maintenance work on the living wall and its potential challenges. It is hoped that this paper raises further awareness that work safety in construction is not only enclosed within the construction site and its vicinity, but safety should also be considered post-occupation, especially when the design demands specific maintenance requirements such as a living wall.
Keywords: Safety, building maintenance, living wall, maintenance risk, green wall
Price Analysis and Forecasting for Bitcoin Using Auto Regressive Integrated Moving Average Model
Authors: Darley Olufunke G. , Yussuff Abayomi I. O. , Adenowo Adetokunbo A. 
Published: December 2021

Abstract
This paper investigated Bitcoin daily closing price using time series approach to predict future values for financial managers and investors. Daily data were sourced from CoinDesk, with Bitcoin Price Index (BPI) for 5 years (January 1, 2016 to May 31, 2021) extracted. Data analysis and modelling of price trend using Autoregressive Integrated Moving Average (ARIMA) model was carried out, and a suitable model for forecasting was proposed. Results showed that ARIMA(6,1,12) model was the most suitable based on a combination of number of significant coefficients and values of volatility, Akaike Information Criterion (AIC) and Bayesian Information Criterion (BIC). A two-month test window was used for forecasting and prediction. Results showed a decline in prediction accuracy as number of days of the test period increased; from 99.94% for the first 7 days, to 99.59 % for 14 days and 95.84% for 30 days. For the two-month test period, percentage accuracy was 84.75%. The study confirms that the ARIMA model is a veritable planning tool for financial managers, investors and other stakeholders; especially for short-term forecasting. It is however imperative that the influence of external factors, such as investors’/influencers’ comments and government intervention, that may affect forecasting be taken into consideration.
Performance Evaluation of Solar Air Collector by Chimney Effect for Drying Applications
Authors: Gebremicheal Gedion Habtay , Buzas Janos , Farkas István 
Published: December 2021

Abstract
Solar air collector is one of the main components of a solar dryer unit, which supplies the conditioned air for processing the perishable edible items. Various techniques have been employed to improve the thermal efficiency of the collector system, such as extended surfaces, packed beds, artificial roughness, etc., however, the cost of construction is higher. Therefore, this study was focussed on the collector efficiency enhancement using a chimney without applying the aforementioned. A single-pass solar air collector coupled with drying chamber and chimney was utilized for the experiments. The experiments were conducted in September. The average values of the solar radiation intensity, ambient temperature, temperatures inside the dryer, collector efficiency were graphically presented. The experimental data reported the maximum values of the outlet temperatures for the solar air collector with and without a chimney to be 52.8 °C and 57 °C, respectively. The collector thermal efficiency with and without the chimney was found to vary from 29.6% to 64.8% and from 26.9% to 44.8%, respectively. Furthermore, it was noticed that, with the chimney, the temperature inside the dryer showed uniform tendency.
The Control Reversing Algorithm for Autonomous Vehicles with PSD-Controlled Trailers
Authors: Cviklovič Vladimír , Srnánek Rastislav , Hrubý Dušan , Harničárová Marta 
Published: December 2021

Abstract
Driving a vehicle with a passive trailer has been the subject of numerous studies. Current control strategies are mostly used by differential geometry, linear algebra, fuzzy regulators, and artificial neural networks. The objective of this study is to design an algorithm for autonomous control of the tractor-trailer system reversing based on an algorithm using a PSD controller and to verify it on a simulated mathematical model. All parameters listed in the models and experiments are performed based on the existing tractor-trailer system. Dynamic models of steering and velocity control were identified and incorporated into the simulation. Result includes a stable operation of the steering without oscillating. The proposed algorithm can be implemented in microcontrollers without the need for high computing power.
Expectations of Persons Accompanying Children for The Physical Environment at Ataköy 5, Kısım Children’s Park
Authors: Caymaz Gökçen Firdevs Yücel , Sirel Ayşe 
Published: December 2021

Abstract
This study aims to research the expectations of users who bring their children to a park of the neighbourhood scale. For this purpose, a survey was conducted randomly with 550 people in 2018. The scope of this task encompassed research entailed questions regarding the occupation, educational status, age of the users, their relation to the children, as well as the age and gender of the children they brought to the park. These research questions were tested with the analyses of the survey questions, which included matters such as security, maintenance, and adequacy of green spaces, all of which are thought to affect park quality and convenient utilization. When viewing the research result, it was concluded that the demand for better security, adequate green area, additional activities, and playgrounds was higher amongst the user group with university education.
Text Analytics in Bulgarian: An Overview and Future Directions
Authors: Hristova Gloria 
Published: December 2021

Abstract
Text analytics is becoming an integral part of modern business and economic research and analysis. However, the extent to which its application is possible and accessible varies for different languages. The main goal of this paper is to outline fundamental research on text analytics applied on data in Bulgarian. A review of key research articles in two main directions is provided – development of language resources for Bulgarian and experimenting with Bulgarian text data in practical applications. By summarizing the results of a large literature review, we draw conclusions about the degree of development of the field, the availability of language resources for the Bulgarian language and the extent to which text analytics has been applied in practical problems. Future directions for research are outlined. To the best of the author’s knowledge, this is the first study providing a comprehensive overview of progress in the field of text analytics in Bulgarian.
VM Consolidation Plan for Improving the Energy Efficiency of Cloud
Authors: Satveer  , Aswal Mahendra Singh 
Published: December 2021

Abstract
Achieving energy-efficiency with minimal Service Level Agreement (SLA) violation constraint is a major challenge in cloud datacenters owing to financial and environmental concerns. The static consolidation of Virtual Machines (VMs) is not much significant in recent time and has become outdated because of the unpredicted workload of cloud users. In this paper, a dynamic consolidation plan is proposed to optimize the energy consumption of the cloud datacenter. The proposed plan encompasses algorithms for VM selection and VM placement. The VM selection algorithm estimates power consumption of each VM to select the required VMs for migration from the overloaded Physical Machine (PM). The proposed VM allocation algorithm estimates the net increase in Imbalance Utilization Value (IUV) and power consumption of a PM, in advance before allocating the VM. The analysis of simulation results suggests that the proposed dynamic consolidation plan outperforms other state of arts.
Molecular Structure and Hybridization Patterns of Abramis brama × Rutilus rutilus Hybrids from Modrac Reservoir, Bosnia and Herzegovina
Authors: Stroil Belma Kalamujić , Ušanović Lejla , Kalajdžić Abdurahim , Lasić Lejla , Škrijelj Rifat , Pojskić Naris 
Published: December 2021

Abstract
Interspecific hybridization in the Cyprinidae family has been recorded worldwide, with Abramis brama (bream) and Rutilus rutilus (roach) as one of the often-reported hybridizing pairs. The only account of such an event in Bosnia and Herzegovina has been in Modrac Reservoir. Using morphological and molecular markers, the presence of hybrids was surveyed, the hybridization direction was determined and the hybrid group structure in this ecosystem was evaluated. Our findings confirmed unhindered natural hybridization between roach and bream in Modrac Reservoir. Over 50% of the hybrid specimens were classified as F2 hybrids by the NewHybrids software, while the rest were categorized as pure parental form, making it the first such finding in Europe. The analysis of mitochondrial cytochrome b showed that 90% of hybrid individuals were of bream maternal origin. The hybrid group expressed higher mean values of observed heterozygosity and gene diversity than both parental species. Signs of introgressive hybridization between parental species were detected. The hybrid zone of Modrac Reservoir appears to follow the intermediate or “flat” hybrid model based on the balanced distribution of parental and hybrid genotypes. Further investigation is needed to elucidate the factors that enable the survival and mating success of post-F1 individuals.
BDNF blood serum linkage with BDNF gene polymorphism (rs6265) in thyroid pathology patients in the West-Ukrainian population
Authors: Kamyshna Iryna I. , Pavlovych Larysa B. , Sydorchuk Larysa P. , Malyk Igor V. , Kamyshnyi Aleksandr M. 
Published: December 2021

Abstract

Objective. Brain-derived neurotrophic factor (BDNF) is identified as an important growth factor involved in learning and memory. Patients with Hashimoto’s thyroiditis can suffer from cognitive dysfunction, whereas BDNF is directly regulated by thyroid hormones. It seems reasonable to propose that changes in BDNF expression underlie some of the persistent neurological impairments associated with hypothyroidism.

Methods. The study involved a total of 153 patients with various forms of thyroid pathology. BDNF levels in the sera of the patients and healthy individuals were quantified using enzyme-linked immunosorbent assay with highly sensitive Human BDNF ELISA Kit. Genotyping of the BDNF (rs6265) gene polymorphism using TaqMan probes and TaqMan Genotyping Master Mix (4371355) on CFX96™Real-Time PCR Detection System. Polymerase chain reaction (PCR) for TaqMan genotyping was carried out according to the kit instructions.

Results. Distribution rs6265 variants in the patients depending on the different types of thyroid pathology showed no significant difference in the relative frequency of BDNF polymorphic variants. Presence of hypothyroidism, regardless of its cause (autoimmune or postoperative), there was a decrease in the serum BDNF levels in all genotypes carriers compared with the control group. The analysis of the correlation between BDNF levels and the levels of thyroid-stimulating hormone (TSH), thyroxine (T4), anti-thyroglobulin (anti-Tg), and anti-thyroid peroxidase (anti-TPO) antibodies showed a significant inverse relationship between BDNF and TSH levels (p<0.001), a direct correlation between BDNF and T4 levels in the blood (p<0.001), and a weak direct relationship between anti-Tg and BDNF levels (p=0.0157).

Conclusion. The C allele presence is protective and associates with the lowest chances for reduced serum BDNF levels in thyroid pathology patients in the West-Ukrainian population. However, the T-allele increases the risk of low BDNF levels almost 10 times in observed subjects.
Expected harmfulness of gnawing phyllophagous insects in urban stands of Kharkiv city
Authors: Kukina Olga , Kardash Eugenia , Shvydenko Inna 
Published: December 2021

Abstract
Urban stands are becoming increasingly important in improving the environmental health and liveability of cities. However, they weaken as a result of technogenic air pollution and become vulnerable to pests, particularly to non-native forest insects. The aim of this research was to assess potential harmfulness (bionomically determined harmfulness [BDH]), environmentally determined harmfulness (EDH) and generally expected harmfulness (GEH) of the gnawing phyllophagous lepidopterous insects in the green stands of Kharkiv (Ukraine). All supplementary parameters were assessed by analysis of publications and the own experience of authors. BDH was evaluated as a product of the duration of larvae nutrition (p1) and an index of larvae nutrition (p2). An index of larvae nutrition (p2) was considered being proportional to their imago wingspan. EDH was evaluated as a product of the value of damaged tree species (p3), location of plant damage (p4), the period of loss decorative effect (p5) and the prevalence of certain insect species in the stands (p6). GEH was estimated as a product of BDH, EDH and the ability of insect species to the outbreaks (p7).
A modified approach for evaluation BDH, EDH and GEH was suggested and implemented, considering phyllophagous leaf miner insects and phyllophagous insects with open lifestyle in the deciduous stands of streets, parks, and Forest Park of Kharkiv city. EDH of insects with an open lifestyle depends on their size and prevalence in the stand. EDH and GEH of all revealed insects with an open lifestyle increase from streets to Forest Park. Among the insects with an open lifestyle, Lymantriidae and Notodontidae had the highest BDH due to the large size and long feeding period of larvae. Among the insects with hidden lifestyle, Cameraria ohridella had the highest BDH due to the highest prevalence and the large duration of feeding period with its several generations.
Juniperus excelsa s. str. in crimea – differentiation and history inferred from genetic and morphological markers
Authors: Mazur Małgorzata , Jadwiszczak Katarzyna A. , Bona Agnieszka , Krasylenko Yuliya , Kukushkin Oleg , Marcysiak Katarzyna 
Published: December 2021

Abstract

Juniperus excelsa s. str. (Greek juniper) in Crimea is a relic species on the limits of its range, and represents the Mediterranean flora in the Sub-Mediterranean part of the peninsula. Its origin and history in this area remains unresolved. We aimed to analyze phylogeny and potential demographic expansion of the juniper in the Crimea as well as to study its morphological differentiation. We analyzed plant material from 59 trees inhabiting eight populations. Genetic variation assessments were based on the four non-coding chloroplast DNA (cpDNA) fragments and the nuclear internal transcribed spacer region ITS1-5,8S-ITS2 (ITS). To examine the morphological differentiation, eight measured/counted traits of cones, seeds, and shoots were chosen and eight ratios were calculated. Morphological parameters were compared using ANOVA, Student’s t test, discrimination analysis and Kruskal-Wallis and U Mann-Whitney tests. Two cpDNA fragments were polymorphic and, in total, 10 cpDNA haplotypes were found. Haplotype diversity (Hd) ranged from 0.0 to 0.9. Based on both cpDNA and ITS sequences variation, phylogenetic analyses revealed a close relationship of the Crimean junipers to the individuals from other parts of the species range. In general, our molecular results confirmed the low level of genetic differentiation of J. excelsa individuals inhabiting different parts of the species range, likely resulting from a common ancestry. Only slight morphological differences were found between populations with different geographic location or habitat. The analyzes showed the distinctness of the populations from the southern part of the coast. Some unique morphological and molecular features of southern coastal populations imply that they are remnants of Late Pleistocene abundant forests. We suggest that the recent fragmentation of the Juniperus populations in the Crimean Peninsula could have arisen during the Atlantic period of the Holocene.
The damage caused by wind in middle-aged Scots pine stands on permanent thinning experimental plots
Authors: Zachara Tadeusz , Gil Wojciech 
Published: December 2021

Abstract
In July 2002, the very strong hurricane appeared in northern Poland, which caused destruction of forest cover of area more than 10,000 ha. The permanent thinning research plot in a 53-year-old pine stand located in Myszyniec forest district (150 km north of Warsaw) was lying on the edge of damaged area. The following treatments were tested on this plot: 1) control plot (without thinning); 2) schematic cut in 20-year-old stand, selective thinning to 40 years, then thinning from below; 3) schematic cut in 20-year-old stand, then selective thinning; 4) selective thinning in young stand (20–40 years), then thinning from below and 5) selective thinning all the time.
A significant part of this plot was completely destroyed and in the other part of the plot, some trees survived. A small part of the plot resisted the wind attack. An analysis of the amount of destroyed trees (measured by basal area) showed no differences between particular silvicultural treatments. The level of damage differed between particular parts of the plot.
Another plot located in Ostrów Mazowiecka forest district (100 km NE of Warsaw) with the same thinning treatments was touched by heavy wind in July 2011 when the stand was 62 years old. Unlike the hurricane of 2002, this storm did not destroy the experimental plot which was located outside the zone of heaviest calamity. Therefore, damage on this plot had point and group character. Although on particular measurement units, share of broken or fallen trees did not exceed 10% of total basal area, it can be observed that the lowest level of damage was noticed on plots with selective thinning in young age and thinning from below in older stand.