bluuebunny/crossref_metadata_2025 huggingface dataset:
Characterization and classification of rice-growing soils on Imo clay shale residua in Eastern Nigeria and current suitability for rice production: I. Omasi-Agu and Omor agrarian communities
Authors: Asadu C.L.A. , Umeugokwe C.P. , Eze F. , Asadu C.A. , Asadu C.A. , Onyeme E.
Published: March 2023

The soils on Imo clay shale residua at Omasi-Agu and Omor areas in Anambra State, Nigeria were sampled in order to characterize classify and evaluate their current suitability for rice production following standard scientific procedures. The soils generally belong to loamy textural classes or finer, especially in the subsoil layers. The morphological and physical properties of soils showed that the soils were poorly drained favouring high water retentivity due to low hydraulic conductivity and slow permeability. All these soil conditions support good rice performance. Though the soils at Omasi-Agu contained high levels of exchangeable bases, exchangeable acidity was equally high leading to low base saturation of < 35% but at Omor the base saturation was > 35%. Thus, the soils were, respectively, classified as Typic Kandiaquults (Soil Taxonomy) correlated with Gleyic Cambisols of the World Reference Base for Soil Resources (WRBSR) and Typic Kandiaqualfs (Soil Taxonomy) correlated with Gleyic Cambisols (WRBSR). Even though the soils of Omor appeared to be generally more fertile than Omasi-Agu soils, both have similar constraints to rice production, that is, insufficiency of nutrients (f) and possibility of erosion by flooding (e) in limited areas (< 25%). Therefore, the current suitability of the soils for rice production is suitability class 2 with fertility constraints (S2fe). For sustainable rice production, supplementary addition of nutrients especially P2O5 from triple superphosphate and some minor levelling and bunding are required to control erosion due to flooding in the limited areas.
Leadership in health and medical education: lessons from a symposium on health sector development in Ghana
Authors: K. Avoka Cephas , S. Nabila Martha , Addy Akua , Okoh Abena
Published: March 2023

The Ghana College of Physicians and Surgeons (GCPS) has established an annual leadership symposium celebrating innovative leadership in the health sector. The 2022 symposium under the theme “Health Sector Development in Ghana; The Power of Good Leadership” was held in honour of Professor Samuel Ofosu-Amaah (the laureate), an Emeritus Professor of Public Health at the University of Ghana, about his leadership legacy. This article reflects on the leadership challenges in the health sector, the lessons learnt from the symposium, and the way forward.Leadership challenges identified in the health sector included the need for mentorship and coaching, the importance of teamwork and networking for delivering high-quality healthcare, and the role of leadership and governance in the health system. Key lessons from the symposium focused on skills in leading an event organisation, effective collaboration and teamwork, and learning from recognising prominent leaders’ contributions to the health sector while these leaders are still alive. Key lessons from the personal and professional life of the laureate included a focus on giving back to the community, building mentorship of health leaders, being a catalyst of change, leadership and governance in public health institutions and publication of research findings.Suggestions were made to name the School of Public Health of the University of Ghana after Professor Ofosu-Amaah, to include a leadership and management module in all training modules at the GCPS and to establish a health leadership “Observatory” to focus on research on how leadership influences relevant health sector policy issues.
Determinants of enrolment in health insurance scheme among HIV patients attending a clinic in a tertiary hospital in South-eastern Nigeria
Authors: N. Alo Chihurumnanya , C. Akamike Ifeyinwa , N. Okedo-Alex Ijeoma , U. Nwonwu Elizabeth
Published: March 2023

Objective: The study aimed to assess the determinants of enrolment in health insurance schemes among people living with HIV.Design: The study was a cross-sectional study. A pre-tested interviewer-administered questionnaire was used to collect information from 371 HIV clients attending the clinic. Chi-square statistic was used for bi-variate analysis, and analytical decisions were considered significant at a p-value less than 0.05. Logistic regression was done to determine predictors of enrolment in health insurance.Setting: The study was carried out in the HIV clinic of Alex Ekwueme Federal University Teaching Hospital Abakaliki, NigeriaParticipants: HIV clients attending a clinicResult: Mean age of respondents was 45.4±10.3, and 51.8% were males. Almost all the respondents were Christians. Only 47.7% were married, and most lived in the urban area. Over 70% had at least secondary education, and only 34.5% were civil servants. About 60% of the respondents were enrolled in a health insurance scheme. Being single (AOR: 0.374, CI:0.204-0.688), being self-employed (AOR: 4.088, CI: 2.315-7.217), having a smaller family size (AOR: 0.124, CI: 0.067-0.228), and having the higher income (AOR: 4.142, CI: 2.07-8.286) were predictors of enrolment in a health insurance scheme.Conclusion: The study has shown that enrolment in a health insurance scheme is high among PLHIV, and being single, self-employed, having a smaller family size, and having a higher monthly income are predictors of enrolment in the health insurance scheme. Increasing the number of dependants that can be enrolled so that larger families can be motivated to enrol in health insurance is recommended.
Psychological correlates of COVID safety protocol adherence among university students
Authors: E. Owusu-Ansah Frances , Amoah Christian , A. Addae Akua , DeGraft-Adjei Victoria , Frimpong-Manso Addo , Appiah-Poku John
Published: March 2023

Background: The COVID-19 pandemic continues to be a global concern. Reports of insidious asymptomatic variants of the virus raise concerns about the safety of huge numbers of students on university campuses.Objective: The study aimed to delineate psychological correlates for students’ adherence to safety protocols for appropriate context-specific coping intervention designs.Setting & Design: 751 students from the various colleges of the KNUST were conveniently sampled for this cross-sectional survey.Measures: Psychological instruments with good psychometric properties (DASS-21; Rosenberg Self-Esteem Scale and Perceived Control Scales) were used in addition to demographics and questions on COVID safety protocol adherence.Results: Self-esteem positively correlated with perceived control (r = 0.40, p<0.001) and COVID adherence (r = 0.16, p<0.001); but negatively correlated with psychological distress (r = -0.44 p<0.001). Greater perceived control was associated with lower psychological distress (r = -0.20 p<0.001) and greater adherence to safety protocols (r = 0.24 p<0.001). Protocol adherence was regressed on psychological distress, self-esteem, and perceived control to determine any significant prediction. All the variables accounted for 7% of the variance in COVID protocol adherence (R2 = 0.07, F (3, 661) =17.29, p<0.001) with perceived control significantly predicting adherence to COVID safety protocol (B = 0.11, β=0.23, t=5.54 p<0.001).Conclusion: Results indicated that perceived control over important life events and healthy self-esteem would likely facilitate adherence to COVID safety protocols and attenuate psychological distress. Implications for further research and design of appropriate COVID coping response interventions are discussed.
Heterogeneous catalytic ozonation for highly efficient mineralization of phenol with La-modified Ce/γ-Al2O3
Authors: Liu Qijie , Gao Erhao , Li Jing , Zhu Jiali , Feng Sheng , Wu Zuliang , Yao Shuiliang
Published: March 2023

In this study, La-Ce/γ-Al2O3 materials for the catalytic ozonation of phenol were prepared by impregnation. In order to analyze the physicochemical properties, BET, SEM, XRD, XPS, and FTIR were used to characterize the catalysts. The removal performance of phenol under different reactive conditions (catalyst dosage, initial pH value, initial phenol concentration, and ozone concentration) was investigated, and the possible catalytic oxidation mechanism and conversion pathway of phenol were proposed through the analysis of ROS and intermediates in solution. The results indicated that the conversion rate of 2.5% La-Ce/γ-Al2O3 increased by 20.53% within 20 min compared with ozonation alone. Moreover, the CO2 mineralization rate was more than twice that of ozonation alone within 250 min, reaching 92.53%, and superior CO2 mineralization was maintained after repeated use. The CO2 mineralization rate of phenol after adding 3 g/L 2.5% La-Ce/γ-Al2O3 catalyst reached almost 100%, and could be maintained in a solution with a wide pH range of 3~9.5. From the characterization results, it could be seen that the 2.5% La-Ce/γ-Al2O3 catalyst obtained higher adsorbed oxygen and hydroxyl species content than γ-Al2O3 and Ce/γ-Al2O3. In the process of phenol catalyzed ozonation, the •O2ˉ species in the solution were deduced to be the key ROS.
ĐÁNH GIÁ Ô NHIỄM KIM LOẠI NẶNG TRONG TRẦM TÍCH HẠ LƯU SÔNG VÀM THUẬT
Authors: LÊ HỒNG THÍA  , NGUYỄN VĂN PHƯƠNG
Published: March 2023

Kim loại nặng trong trầm tích hạ lưu Sông Vàm Thuật tiềm ẩn gay rủi ro cho hệ sinh thái Sông Sài Gòn.  Do đó, nghiên cứu được thực hiện để đánh giá tồn lưu chất ô nhiễm kim loại nặng (Cd, Cr, Cu, Pb, Zn) tại vùng cửa sông này. Các phương pháp đánh giá dựa trên Quy chuẩn Việt Nam (QCVN), ngưỡng khuyến cáo của Cục Bảo vệ Môi sinh Hoa Kỳ (US EPA) cũng như các chỉ số nền, bao gồm hệ số làm giàu- EF, chỉ số ô nhiễm-CF, chỉ số tích tụ địa chất- Igeo, chỉ số tải lượng ô nhiễm- PLI, 7 mẫu trầm tích được thu trong tháng 3 năm 2022 vào thời điểm lúc triều xuống. Kết quả nghiên cứu cho thấy, hàm lượng các kim loại nặng Cd, Cr, Cu, Pb, Zn trong trầm tích dao động lần lượt là 1,08 - 1,93 mg/kg, 32,4 - 66,2 mg/kg, 2,3 – 10,5 mg/kg, 289 – 703 mg/kg. Trong đó, hàm lượng Cd, Cr, Cu, Pb, hầu hết chưa vượt giới hạn cho phép theo QCVN 43/2017 ngoại trừ Zn. Theo ngưỡng khuyến cáo của US EPA thì có Cd, Zn, Cr vượt mức. Chỉ số EF xác nhận ô nhiễm chủ yếu do con người gây ra. Chỉ số CF, Igeo khẳng định Cd, Zn và Pb ô nhiễm ở mức cần xem xét hay ô nhiễm cao. Chỉ số PLI cho thấy mức độ ô nhiễm hạ lưu Sông Vàm Thuật tiến triển theo xu hướng ô nhiễm cao.
CẢI THIỆN HÀM LƯỢNG KIM LOẠI NẶNG TRONG ĐẤT PHÈN NHIỄM MẶN BẰNG THAN SINH HỌC
Authors: ĐINH ĐẠI GÁI  , NGUYỄN THANH BÌNH  , LÝ THANH BÌNH
Published: March 2023

Hàm lượng kim loại nặng trong đất trồng có thể ảnh hưởng đến chất lượng nông sản và sức khỏe người tiêu dùng. Sử dụng than sinh học được sản xuất từ các phế phẩm nông nghiệp nhằm làm giảm hàm lượng kim loại nặng trên đất canh tác nông nghiệp là giải pháp tiềm năng cần được nghiên cứu. Nghiên cứu này có mục đích đánh giá khả năng cải thiện hàm lượng kim loại nặng trong đất phèn nhiễm mặn của các loại than sinh học được sản xuất từ vỏ trấu và thân cành nhãn. Nghiên cứu sử dụng đất phèn nhiễm mặn phối trộn với hai loại than ở các tỉ lệ khác nhau là 0,7; 1,5; 3,0 và 6,0%. Thí nghiệm được tiến hành trong nhà kính trong thời gian là 60 ngày và đất trong các chậu được lấy sau 5 và 60 ngày để phân tích hàm lượng trao đổi của các kim loại nặng. Kết quả nghiên cứu cho thấy than sinh học đã làm giảm hàm lượng trao đổi của các kim loại Cd, Ni, Pb, Sr và Zn tùy theo tỷ lệ sử dụng. Ở tỷ lệ than sinh học là 6 % thì khả năng cải tạo kim loại nặng tốt nhất. Loại than từ vỏ trấu có khả năng cải tạo tốt hơn loại than từ thân cành nhãn. Giá trị pH của đất cũng tăng lên theo tỷ lệ than sử dụng. Việc giảm hàm lượng trao đổi của các kim loại phân tích có thể có liên quan đến khả năng hấp phụ của than cũng như việc tăng giá trị pH của đất. Cần có các nghiên cứu tiếp theo trên các loại than khác nhau cũng như trên đồng ruộng thực tế để đi đến các kết luận chính xác hơn phục vụ phát triển bền vững.
Cops and Robbers on Dynamic Graphs: Offline and Online Case
Authors: Balev Stefan , Jiménez Laredo Juan , Lamprou Ioannis , Pigné Yoann , Sanlaville Eric
Published: March 2023

We examine the classic game of Cops and Robbers played on models of dynamic graphs, that is, graphs evolving over discrete time steps. At each time step, a graph instance is generated as a subgraph of the underlying graph of the model. The cops and the robber take their turns on the current graph instance. The cops win if they can capture the robber at some point in time. Otherwise, the robber wins. In the offline case, the players are fully aware of the evolution sequence, up to some finite time horizon T. We provide a O(n 2k+1 T) algorithm to decide whether a given evolution sequence for an underlying graph with n vertices is k-cop-win via a reduction to a reachability game. In the online case, there is no knowledge of the evolution sequence, and the game might go on forever. Also, each generated instance is required to be connected. We provide a nearly tight characterization for sparse underlying graphs, i.e., with at most linear number of edges. We prove λ + 1 cops suffice to capture the robber in any underlying graph with n − 1 + λ edges. Further, we define a family of underlying graphs with n−1+λ edges where λ−1 cops are necessary (and sufficient) for capture.
A Study on Meta- Efficiency Comparison Between Korean and Japanese Banking Industries: Based on Profit
Authors:   The Korean-Japanese Economics & Management Association, Kim Hyoung-Tae , Cho Il-Gum , Kang Sang-Mok
Published: March 2023

Purpose: This study aims to improve the competitiveness of the domestic banking industry by diagnosing the efficiency of the Japanese and Korean banking industries, which have similar financial environments such as long-term low growth and low interest rates.
Research design, data, and methodology: The research method uses probabilistic frontier analysis (SFA) and the form of a profit function based on five years (2015- 2019) data for 35 banks in Korea and Japan. This study estimates the individual frontiers of Korean and Japanese banking groups, and estimates the meta-frontiers that encompass the individual frontiers of Korean and Japanese banks operating with different technologies. In addition, the international technology gap between two countries is measured and meta-profit efficiency is calculated using the profit efficiency of each country and the international technology gap. Through this verification process, the management characteristics of countries leading the meta-frontier and the banking industry in that country are confirmed.
Furthermore, we regressively analyze the determinants of inefficiency for the profit and technology gap of the two national banking groups and draw implications. This study differs from previous studies in that it uses a probabilistic frontier analysis and a profit function for the international banking industry from a profit perspective.
Results: As a result of empirical analysis, first, in terms of profit efficiency by country, the Bank of Korea group is more efficient. However, in the international technology gap, the Japanese banking group is considerably ahead of Korea. Accordingly, in terms of meta profit efficiency, the Japanese banking group is ahead of Korea, which is due to the international technology gap. Second, the meta profit efficiency of Japan’s three major urban banks is the highest with an average of 0.91 for five years, and among them, Mitsubishi UFJ Bank was found to be the leading bank among all the research target banks. Third, it was analyzed that the profit efficiency improvement effect occurs only when the market concentration (HHI index) of both countries’ banking groups is increased and the net loan ratio is lowered.
Implications: Therefore, it was suggested that the banking industry of the two countries should increase their market dominance by increasing the beneficiary assets other than loans, because the increase in bad debts due to credit risk increases as the amount of loans increases and negatively affects the efficiency of banks.
Effects of low-level laser therapy and therapeutic ultrasound on Freund’s complete adjuvant-induced knee arthritis model in rats
Authors: Okur Sıtkıcan , Okumuş Zafer
Published: March 2023

Objectives: The aim of this study was to evaluate and monitor the effect of low-level laser therapy (LLLT) and therapeutic ultrasound (TU) alone, or combined with intra-articular prednisolone (P) in Freund’s complete adjuvant (FCA)-induced knee arthritis model in rats.

Materials and methods: A total of 56 adult male Wistar rats were divided into seven groups: control (C), disease control (RA), P, TU, LLLT (L), P + TU (P+TU), P + LLLT (P+L) groups. The skin temperature, radiography, joint volume, serum rheumatoid factor (RF), interleukin (IL)-1β, serum tumor necrosis factor-alpha (TNF-α), and histopathological evaluation of joint were performed.

Results: Thermal imaging and radiographic examination provided results consistent with the severity of the disease. The mean joint temperature (°C) was the highest in the RA (36.2±1.6) group on Day 28. The P+TU and P+L groups significantly decreased radiological scores at the end of the study. The rat serum TNF-α, IL-1β, and RF levels in all groups were significantly higher compared to the C group (p<0.05). Compared to the RA group, serum TNF-α, IL-1β, and RF levels were significantly lower in the treatment groups (p<0.05). The P+TU and P+L group was showed minimal chondrocyte degeneration and cartilage erosion and mild cartilage fibrillation and mononuclear cell infiltration of synovial membrane compared to the P, TU, and L group.

Conclusion: The LLLT and TU effectively reduced inflammation. In addition, a more effective result was obtained from the use of LLLT and TU combined with intra-articular P. This result may be due to insufficient dose of LLLT and TU, thus further studies should be focus on at higher dose ranges on FCA arthritis model in rats.
Clinical course and prognostic factors of COVID-19 infection in patients with chronic inflammatory-rheumatic disease: A retrospective, case-control study
Authors: Nas Kemal , Güçlü Ertuğrul , Keskin Yaşar , Dilek Gamze , Kalçık Unan Mehtap , Can Nurselin , Tekeoğlu İbrahim , Kamanlı Ayhan
Published: March 2023

Objectives: This study aims to investigate the prognosis of novel coronavirus disease-2019 (COVID-19) infection in patients with the chronic inflammatory-rheumatic disease and evaluate the effects of immunosuppressive drugs on the prognosis, clinical characteristics, laboratory findings and hospitalization periods of the rheumatic patients with COVID-19 infection.

Patients and methods: Between April 2020 and March 2021, a total of 101 patients (30 males, 71 females; mean age: 48±14.4 years; range, 46 to 48 years) with the rheumatic diseases diagnosed with COVID-19 infection were included. A total of 102 age- and sex-matched patients (35 males, 67 females; mean age: 44±14.4 years; range, 28 to 44 years) who were diagnosed with COVID-19 infection and had no history of rheumatic disease in the same period were included as the control group. Data including demographic characteristics of the patients, presence of any symptoms of COVID-19 disease, laboratory data at the time of diagnosis, and treatments administered were collected.

Results: The rate of hospitalization was higher in 38 (37%) patients without rheumatic diseases than in 31 (31%) patients with rheumatic diseases (p=0.324). The rate of lung infiltration on radiographic examination was higher in patients without rheumatic diseases (40% vs. 49%) (p=0.177). COVID-19 infection symptoms such as anosmia 45 (45%), ageusia 51 (50%), shortness of breath 45(45%), nausea 29 (29%), vomiting 16 (16%), diarrhea 25 (25%) and myalgia-arthralgia 81 (80%) were higher in patients with rheumatic diseases. In terms of laboratory values, lymphocyte count (p=0.031) was statistically higher in patients without rheumatic diseases. Hydroxychloroquine (35%), oseltamivir 10 (10%), antibiotics 27 (26%), acetylsalicylic acid 52 (51%), and supplementary oxygen 25 (25%) treatments which used to cure COVID 19 infection were administered more in patients without rheumatic diseases. The number of treatments administered was higher in patients without rheumatic diseases (p<0.001).

Conclusion: Patients with the chronic inflammatory-rheumatic disease have more symptoms due to COVID-19 infection, but the disease course is not poor and hospitalization rates are lower.
Art history research in scientific discourse
Authors: Bilozub Liydmyla , Tymoshenko Maksym , Bedrina Nadiia , Voronova Nadiia , Andrushchenko Tetiana
Published: March 2023

It is noted in the article that art historical research occupies a prominent place in the scientific discourse. The work on the identification of obscure views on music as a phenomenon in the cultural and anthropological tradition of music is carried out. It is proved that scientists interpret the painting as a semiotic system with its special image code, the information of which can be decoded. The secondary verbal expression of such messages in the text of art is possible due to the mechanism of interpretation. It is concluded that the non-verbal type of artistic creativity is comprehended by the subject in the form of the inclusion of the mechanism of reception, evaluated, transformed into a verbal code, and thus interpreted.
The use of pedagogical technologies for the organization of the educational process in institutions of higher education
Authors: Strelnyk Olha , Kosarevska Raddamila , Lysenko Galyna , Kampi Yuriy , Golovchak Nataliya
Published: March 2023

Currently, the educational and training process is characterized by the search for such pedagogical technologies that would maximally contribute to forming a socially active, creative personality capable of independently regulating his life activities. The purpose of the academic paper is to study the theoretical fundamentals of the features of applying various pedagogical technologies. In the course of the present research, analysis, synthesis, induction and deduction were used to process scientific information. Based on the research results, the existing pedagogical technologies of organizing the educational process in the higher education sphere were studied from the perspective of their effectiveness.
Methodical training of teachers working with schoolchildren with intellectual development disabilities
Authors: Torop Kristina , Yarmola Nataliia , Dergach Marharyta , Kvitka Nataliia , Trykoz Snizhana , Vasylenko Bohdana
Published: March 2023

Working with children with special educational needs requires a high level of the teacher’s competence and high-quality organizational work to constantly improve the educational process’s effectiveness. The purpose of the academic paper is to determine the main features of the pedagogical workers’ readiness to work with schoolchildren with intellectual disabilities, to study the success factors of this process and to highlight the effectiveness degree of its components. Several general and special methods of studying analytical information were used during the research. As a result the success features and individual characteristics of the pedagogical staff’s readiness to work with schoolchildren with intellectual development disorders were determined.
Study of Power Flow and Harmonics when Integrating Photovoltaic into Microgrid
Authors: Kurniawan Robi , Daud Muhammad , Hasibuan Arnawan
Published: March 2023

Power system stability issues and the lack of studies of the impact of relevant renewable energy networks are factors hindering the use of large-scale integration of renewable energy sources. This study focuses on examining the impact of photovoltaic system integration on the power stability of the power grid. The integration of this photovoltaic involves the analysis of the static and dynamic state of the electrical network. Load flow simulation is performed to assess the performance of static conditions of the power grid. Furthermore, dynamic analysis is carried out by applying 3-phase short circuits at critical points of the network and observing how harmonic and stability in the system. The simulation was carried out using the ETAP 19.0. Simulations of existing conditions and after penetration of the photovoltaic system showed the buses had THDv and THDI values below the permissible standards, respectively. In addition, the existing power flow simulation experiences a voltage drop from the nominal voltage.

Masalah stabilitas sistem tenaga dan kurangnya studi akan dampak dari jaringan energi terbarukan yang relevan merupakan faktor yang menghambat penggunaan integrasi skala besar dari sumber energi terbarukan. Penelitian ini fokus mengkaji dampak integrasi sistem fotovoltaik pada stabilitas daya jaringan listrik. Integrasi sistem fotovoltaik ini melibatkan analisis keadaan statis dan dinamis dari jaringan listrik. Simulasi aliran beban dilakukan untuk menilai kinerja kondisi statis dari jaringan listrik. Selanjutnya, analisis dinamik dilakukan dengan menerapkan hubung singkat 3 fasa pada titik-titik kritis jaringan dan mengamati bagaimana harmonisa dan stabilitas pada sistem. Simulasi dilakukan dengan menggunakan perangkat lunak ETAP 19.0. Simulasi kondisi sebelum dan setelah penetrasi sistem fotovoltaik menunjukkan bus masing-masing memiliki nilai THDv dan THDI dibawah standar yang diperbolehkan. Selain itu, simulasi aliran daya kondisi sebelum integrasi mengalami jatuh tegangan dari tegangan nominal.
The Effect Of Leadership Style And Career Development On Employee Performance At Cv Setia Kawan Medan
Authors: Suherman Suherman , Syaifuddin Syaifuddin , Faris Salman
Published: March 2023

The purpose of the study was to determine the effect of leadership style and career development on employee performance at CV Setia Kawan Medan. The data analysis method used in this study is a statistical analysis method using multiple linear regression equations. The research population is 45 employees who work in CV Setia Kawan. So the number of samples is the same as the population of 45 employees. Researchers tested the classical assumptions first before doing regression testing. The results showed that the calculated F value (8.907) was greater than the F table value (3.214), and sig.α (0.000a) was smaller than 5% alpha (0.05), so that leadership style and career development had a simultaneous effect. on employee performance at CV Setia Kawan Medan. Leadership style has an effect on employee performance at CV Setia Kawan Medan. Career development affects employee performance at CV Setia Kawan Medan. The influence of leadership style and career development on employee performance at CV Setia Kawan Medan is 80.2% while 19.8% is explained by other variables not included in this research model such as training, job stress and motivation.
Attitude Components Towards Online Purchase Intention
Authors: Wicaksono Teguh , Syahrani  , Shahrial Putra Defin
Published: March 2023

As the behaviour main foundation, intention gives a strong contribution in leading behaviour to perform certain actions. It is necessary to prove empirically the psychological factor towards online purchase intention through attitude components, which are cognitive, affective, and conative. The aim of this study is to empirically describe and give evidence about the impacts of cognitive, affective, and conative levels on online purchase intention. The data is collected using survey and statistically analysed with multiple linear regression, engaging 150 respondents. The results of the study prove that cognitive and conative levels have a significant impact on online purchase intention, while the affective level does not give any impact towards it. The conative level is a factor that gives the greatest impact on online purchase intention, which means that the conveniences offered on online purchasing are the biggest aspects that lead to a desire to do online purchasing. The willingness to do online purchasing will result to a strong online purchase intention.
Improvement of Designing Laboratory Scale Plastic Chopping Equipment with the TRIZ Method (Theorija Rezhenija Izobretatelskih Zadach)
Authors: Fijra Rafiqa , Saleh Zulkiffli , Rifqi Adinugraha M. , Hastarina Merisha , Wahyudi Bayu
Published: March 2023

The practical use of plastic increasing the demand for plastic. Plastic waste is difficult to decompose, currently many efforts have been made to reduce this plastic waste. A plastic chopping machine is a tool used to produce shredded plastic items into small pieces of a certain size, which can later be used for further processing as a recycling effort. This study improves the design of an existing plastic chopper that focuses on increasing reliability and convenience by the user. The analysis was carried out using a fishbone diagram and the TRIZ design method. The research resulted in a number of causes for the emergence of problems in the operation of the plastic chopper and a new design for the tool, namely improvements in terms of the type of blade, type of motor, and size of the tool.

 

Keywords: Improvement designing, plastic chopper, fishbone diagram, and TRIZ method.
Implementation Of Work Stress In Moderating Work-Life Balance And Flexible Work Arrangements For Job Satisfaction During The Covid-19 Pandemic
Authors: Butarbutar Marisi , Kurnia Lubis Abdi , Tua Siregar Robert , Supitriyani Supitriyani
Published: March 2023

Teachers as human resources in schools have demands that the implementation and work-life balance and flexible work arrangement can be balanced and minimize work stress. The implementation of online learning systems that can make teachers do work-life balance and flexible work arrangements should be able to reduce stress and increase job satisfaction. But the reality in the field is that many teachers do not get job satisfaction. The purpose of this study was to analyze the description and effect of work-life balance, flexible work arrangement, job satisfaction and job stress. The object of this research is the State Senior High School PNS Teachers in Pematang Siantar City who have been certified as many as 168 people. Data analysis techniques used are normality test, regression analysis, correlation coefficient and determination and hypothesis testing. The test was carried out using the SPSS Statistic version 20 program. The results showed are Jjb satisfaction, work-life balance, flexible work arrangement and work stress were in the answers with the criteria of agree/satisfied. The practice of flexible work arrangements affects work-life balance. The results of the regression have a positive influence between each variable. The results of the correlation coefficient analysis obtained a strong and positive relationship. The results of hypothesis testing show a positive and significant effect. Work stress variable is not a moderating variable. It is concluded that the application of work-life balance and flexible work arrangements can increase job satisfaction and work stress is a debilitating variable.
The Effect Of Third Party Financing And Funds On Total Assets In Sharia Financing Banks In Indonesia 2016-2020 Period
Authors: Arfa Syera Inda , Affiah Hajar
Published: March 2023

The specific purpose of this study is to determine the effect of Financing and Third Party Funds on the Total Assets of Islamic People's Financing Banks. The approach used in this research is a quantitative approach. The data used in the form of secondary data from the website of the Financial Services Authority (OJK). The population is monthly data from January 2016 to December 2020 period while the sample is annual data from 2016 to 2020. The research analysis carried out is multiple linear regression, classical assumption test (normality test, heteroscedasticity multicollinearity test and autocorrelation test), and test statistics (coefficient of determination (R2), statistical F test, and statistical t test). The results of this study are the variables of Financing and Third Party Funds have a significant effect simultaneously (simultaneously) on the variable Total Assets of Islamic People's Financing Banks.
Analysis of Factors Affecting the Utilization of PTM Posbindu at the Jailolo Health Center, West Halmahera Regency
Authors: Tuharea Rosmila , Yusnita Yusnita , La Patilaiya Hairudin , Sumaryati Sumaryati , Amin Sahril
Published: March 2023

Backgroud : Posbindu PTM is a form of service that involves community participation through promotive and preventive efforst to detect and control early on the presence of PTM risk factors in an integrated manner. The purpose of this study was to determine the factors that influence the utilization of PTM Posbindu at the Jailolo Health Center, West Halmahera Regency. This type of research uses cross sectional approach with a cross sectional study. The population was 201 participants with the sampling technique using the Slovin formula,namely 134 pasticipants. Data obtained by conducting interviews using a questionnaire. Data analysis was univariate and bivariate with che square statistical test with a value of=0,05. Based oh the results of the study, it can be concluded that there is a significant relationship between knowledge p-value=0,001<alpha (α=0,05), family support p-value=0,004<alpha (α=0,05), while the unrelated is attitude p-value=1.568<alpha value (α=0.05), health worker support p-value=1.249<alpha value (α=0.05) and PTM cadre support p-value=0.941<alpha value (α=0.05) on the utilization of PTM Posbindu at the Jailolo Health Center, West Halmahera Regency. It is recommended that participants take part in PTM Posbindu activities so that they can prevent PTM disease from an early age. Health workers and PTM cadres are more active in approaching or coordinating so that participants want to visit PTM Posbindu.
Framing TOWS as Marketing Strategy Determiner of Medical Equipment in PT. Tawada Healthcare Jakarta Indonesia
Authors: Asari Asari , Puspitaloka Mahadewi Erlina , Marti Ayu Ira , Shorayasari Susi
Published: March 2023

The present study reports the comprehensive framing study around healthcare marketing stategy, inside the era of globalization has led to intense competition in various industrial fields, including the medical equipment in healthcare industry. PT. Tawada Healthcare was founded in 1999 with the aim of becoming the most integrated, reliable and customer-based healthcare provider in Indonesia. Over the years the company added a variety of different brands and products to its portfolio to serve a wider customer base, the company focused on providing the best customer experience and offering the highest quality products to customers in Indonesia. currently represents 20 major international principals and has a network to market its products throughout the country, covering provinces and major cities. It has 13 branches including its head office in Jakarta. The decline in sales of orthopedic implant medical devices at PT. Tawada Healthcare Jakarta in 2020 due to the pandemic impact of 41% of the total sales target of orthopedic implants in 2020 of 120,000,000,000 IDR. The cause of the decline in sales of orthopedic implant medical devices at PT. Tawada Healthcare is the rise of competitors of similar orthopedic implant medical device companies. The covid19 pandemic that hit the world, including Indonesia, resulted in a decrease in the budget for the procurement of orthopedic implant medical devices from the government because the budget was allocated for handling the covid19 pandemic and the decreasing demand for orthopedic implant medical devices from users due to the covid19 pandemic. This study aims to provide an overview of the TOWS (threat, opportunity, weakness and strength) method approach as an alternative solution and determine the strategy for selling medical devices at PT. Tawada Healthcare in 2021-2022.
The Effect Of Return On Assets, Laverage And Earnings Per Share On Stock Prices With Dividend Policy As Moderating Variables On Property And Real Estate Companies Listed On The Indonesia Stock Exchange For 2016-2019 Period
Authors: Sari Manullang Nova , Pakpahan Efendy , Br Tarigan Aremi , Noviyanti Simorangkir Enda
Published: March 2023

This study aims to examine and analyze the effect of Return On Assets, Laverage, Earning Per Share on Stock Prices with Dividend Policy as moderating variables in property and real estate companies listed on the Indonesia Stock Exchange during the 2016-2019 period. Sample selection was done by using purposive sampling method. The data used is secondary data obtained from the website www.idx.co.id. Data analysis was carried out by calculating the PLS Algorithm using SmartPLS and then testing the hypothesis. The results show that Return On Assets and Earning Per Share have a significant effect on the direction of a positive relationship to Stock Prices, while Laverage has no effect on Stock Prices, and Dividend Policy is able to moderate the effect of Return On Assets on Stock Prices, while Dividend Policy is not able to moderate the influence of Laverage. and Earning Per Share to Share Price.
Design And Build A Double Roll Type Pecan Breaking Machine With A Power Of 0.5 Hp
Authors: Marslino Simanjuntak Arion , Sahat  , Naibaho Winfrontstein
Published: March 2023

Pecan is one of the spices that become an ingredient in the process of the food and cosmetic industry. The pecan separator machine is made to facilitate and speed up the process of breaking the pecan fruit in order to increase work efficiency in the hope that the machine can achieve high efficiency in the form of good fruit yields. The purpose of this pecan fruit separator machine is to help facilitate the community in processing pecan fruit to the maximum of its production, and the community can also increase the processing productivity of pecan fruit, which can improve the community's economy. The research method applied in this study is an experimental method, namely the initial stage of designing a double roll type pecan breaking machine using Auto CAD. Then build the machine in the workshop based on the design that has been done before. The stages passed are making design drawings in Auto CAD and analyzing the components used in the pecan breaking machine. Such components are the frame, inlet funnel, shaft, breaker roller, bearing and outlet funnel. From the results of the analysis, the motor power is 0.5 HP with a rotation of 1400 rpm. The belt length used from the calculation of the pulley size on the 3" machine and the pulley on the 10 breaking roll is 42". For breaking rollers the outer diameter of the roller = 120 mm, the inner diameter of the roller = 100 mm, and the length of the roller = 190 mm. The shaft on the drive motor is 24 mm in diameter. The shaft isestimated to be of S30C carbon steel with tensile strength = 48 kg/mm².
Formulation And Evaluation Of Nanoemulgel Clove Leaf Oil (Sygyzium Aromaticum) (L.) Merr & Perry As Anti-Acne
Authors: Dasawanti Yoan , Reveny Julia , Sumaiyah Sumaiyah
Published: March 2023

Acne also known as acne vulgaris, is an inflammatory condition of the polysebaceous layer that is brought on by the buildup of keratin. Active oil glands under the skin cause acne. Androgen hormones function as a stimulant for this activity. Cloves are herbal plants that contain essential oil chemicals. The chemical composition of clove leaf oil is mainly composed of eugenol. Eugenol has pharmacological effects as antibacterial, analgesic and anti-inflammatory. Nanoemulsion is a nanocarrier that gets a lot of attention, because of its small particle size so that it can be thermodynamically stable and can increase drug penetration. Recent advances in nanoemulsion research have created new prospects in a number of industries, including pharmaceuticals, biotechnology, food, and cosmetics. This research was conducted by formulating clove leaf oil into nanoemulgel preparations, followed by evaluation of the preparations and testing of antibacterial activity against acne-causing bacteria. The result of the nanoemulgel formulation is yellow, smells of clove leaf oil, is transparent and homogeneous. Nanoemulgel viscosity 3434-3109 M.Pas, pH 6.15-6.41 and particle size 12.3-13.3 nm. Physical studies of nanoemulgel been carried out for three cycles and there is no change in color, change in odor and phase separation. The results of the antibacterial activity of Staphylococcus epidermidis at NEG1 12.03 mm, NEG2 16.93 mm, NEG3 18.96 mm and EG 18.03 mm. The results of the antibacterial activity of Propionibacterium acnes at NEG1 11.50 mm, NEG2 16.16 mm, NEG3 18.03 mm and EG 17.33 mm. The results of the study concluded that clove leaf oil nanoemulgel with a concentration of 7% was the best formula, because it is stable during storage and has the greatest antibacterial activity compared to emulgel.
Analysis of Readiness for Implementation of the Smart City Masterplan in Wonogiri Regency
Authors: Manggalou Singgih , Uang Yulinda , Azizatun Binti , Bataha Katerina
Published: March 2023

The development of the world's digital governance era has reached the development of smart city 4.0. Not many cities can make that happen. In Indonesia, the movement towards smart cities is still starting to be echoed. So it is necessary to prepare and have the will of the region to implement a smart city because of the difficulty in preparing to implement a smart city. Wonogiri Regency is one of the districts selected for smart city implementation because the achievement of the Electronic-Based Government System (SPBE) indicator has increased. The purpose of this study was to analyze the readiness of implementing a smart city master plan in the Wonogiri Regency. This research is a qualitative type with data collection techniques through in-depth interviews with 8 purposively selected informants. The researcher found that the readiness of the five components (nature, structure, infrastructure, superstructure, and culture) was 51% in good condition, 32% in moderate condition, and 17% in poor condition. This means that it is necessary to increase the structural and superstructure components where conditions are still bad. Recommendations in increasing readiness for smart city implementation include making regional smart city policies; improving the quality of the relevant apparatus to improve the quality of ICT capabilities; increasing the amount of budget in the smart city program; and preparing supporting institutions
Maximal Flow of Transportation Network in Medan City Using Ford-Fulkerson Algorithm
Authors: Marpaung Faridawaty , Arnita Arnita , Sari Nila
Published: March 2023

Transportation is a major component of living, government, and social systems. Tsocio-demographic conditions influence the performance. In this study has a purpose as an investigation of an event that measures the maximal capacity of the road as a way to overcome congestion. Searching for the maximal flow based upon the graph formed using the Ford-Fulkerson Algorithm with numerous stages, namely determining the possible pathway through the source point to the main point arranged in numerous iterations by analyzing the graph formed. Then the initialization process is given by zero flow from each side of the graph, then the search for maximal flow is obtained after doing as many as 16 iterations. The residual flow results from subtracting the total number of flows by the number of flows at each iteration. The iteration will stop if no more augmenting pathway is found. Cuts will occur if the amount of flow equals the amount of capacity. Research data is in the form of public transportations in Medan and routes. The data was obtained directly from the archives of the Transportation Service in Medan City. The search for the maximal flow of the transportation network is carried out by observing the public transportation route in the city of Medan, namely the public transportation route through Jalan Jamin Ginting to Jl. Various types of public transportation traverse Williem Iskandar. Based upon the research, the maximal capacity can be exceeded through the transportation network. There are 5 types of public transportations. The pathway through City Hall - Jl. Putri Hijau and the pathway through Jl. Perintis Kemerdekaan–Jl. HM. Yamin has exceeded capacity because the types of public transportation that pass through the two roads are 15 and 9. However, the other lanes are still low, so it should divert some types of public transportation overload to empty roads.
Estimation Of Greenhouse Gas Emissions At Gunung Kupang Final Processing Site Landfill Using The IPCC Method
Authors: Yulianto Khenza Atthaya Namira , Abrar Firdausy Muhammad , Riduan Rony , Puteri Mahyudin Rizqi
Published: March 2023

Methane gas (CH4) is one of the main Greenhouse Gases (GHG), which contributes 14.5% to global warming. The methane gas potential that can be created from final processing site landfills in 45 big cities in Indonesia in 2010 reached 11,390 tons of CH4/year or the equivalent of 239,199 tons of CO2/year. The decomposition process that occurs in the waste pile will produce methane emissions and be released into the atmosphere by 50-60%. Gunung Kupang final processing site is a final processing site that serves the Banjarbaru City area in addition to the Banjarbakula Regional final processing site, with waste coming in every day which continues to increase and has the potential to generate emissions. The purpose of this research is to analyze the characteristics in the form of waste generation and composition at the Gunung Kupang final processing site and to analyze the estimation of methane gas from the Gunung Kupang final processing site landfill activities using IPCC methods. The methods used in this study are the Intergovernmental Panel on Climate Change (IPCC). Total greenhouse gas emissions produced in the IPCC method from 2014-2020 were 1.49 Gg/year. In 2021-2024, it is estimated that methane produced using the IPCC method is 0.528 Gg/year
Isolation of Chitosan From Dogol Shrimp Skin (Parapenaeopsis sculptilis)
Authors: Anggreini Dea , Yuandani Yuandani , Sinaga Siti Morin
Published: March 2023

In Indonesia, shrimp underwent a "cold storage" process where the heads, tails, and shells were discarded as waste. This shrimp waste could pollute the environment around the factory so it needed to be utilized. So far, shrimp shells had only been used as ingredients for making crackers, shrimp paste, and animal feed supplements. The remaining shrimp shells that had been separated were made into chitosan which was then subjected to characterization tests. The three steps of the chitosan isolation process were deproteinization, demineralization, and deacetylation. The analytical tests carried out were testing the water content, ash content, and functional groups contained in chitosan which were identified using the Fourier Transform Infra Red (FT-IR) Spectrophotometer. Based on the test results, there was a moisture content of 9.27% ​​and an ash content of 1.69% in the chitosan samples made from shrimp shells. Functional groups of shrimp shell chitosan were identified using FT-IR characteristics. The -NH- group, which was represented by the N-H and O-H stretching groups, could be seen in the absorption band 1456.26 in the wave range 3000–30500. The conclusion of this study was that chitosan could be extracted from shrimp shells and meet the characterization criteria.