bluuebunny/crossref_metadata_2025 huggingface dataset:
Pengaruh Rasio Keuangan Terhadap Return Saham Pada Perusahaan Real Estate And Property Yang Terdaftar Di Bursa Efek Indonesia Periode Tahun 2017-2021
Authors: Christopher Steward , Putri Mega Amelia , Jessica Jessica , Putri Arie Pratania , Ovami Debbi Chyntia
Published: October 2023

The research objective was to test and analyze Return On Assets (ROA), Earning Per Share (EPS), Debt to Equity Ratio (DER) and Price to Book Value (PBV) affecting Stock Returns. The research method uses quantitative. The population of this study were all Real Estate and Property companies listed on the Indonesia Stock Exchange during the 2017-2021 period, totaling 81 companies and 7 companies as samples and 35 observations, and sampling was determined by the purposive sampling method. Data analysis used multiple linear regression analysis. Partial test results obtained t count value obtained t count 2.255019) > t table (2.042) and a significant value obtained 0.0335 <0.05, so Return On Assets (ROA) has a positive and significant effect on stock returns. Value t count is obtained for t count (-1.675670) > t table (2.042) and a significant value is obtained for 0.1068 > 0.05 then Earning Per Share (EPS) has no effect on Stock Returns. The t count value is obtained for t count 0.822924) > t table (2.042 ) and a significant value is obtained for 0.4187 > 0.05, then the Debt to Equity Ratio (DER) has no effect on Stock Returns. The t count value is obtained for t count 0.014168) > t table (2.042) and a significant value is obtained 0.9888 > 0.05, then the Price to Book Value ( PBV) has no effect on stock returns. The calculated F value is obtained for F count (1.732305) < Ftable (2.5335) and a significant value is obtained 0.175771> 0.05 then Return On Assets (ROA), Earning Per Share (EPS), Debt to Equity Ratio ( DER) and Price to Book Value (PBV) have no effect on Stock Return.

Keywords: Return On Assets (ROA), Earning Per Share (EPS), Debt to Equity Ratio (DER), Price to Book Value (PBV), Stock Return
Pengaruh Capital Intensity Dan Leverage Terhadap Tax Avoidance Pada Perusahaan Sektor Property Dan Real Estate Yang Terdaftar Di Bursa Efek Indonesia (BEI) Pada Tahun 2019-2021
Authors: Hutabarat Evelyn Tio Rizki , Yuliati Anik
Published: October 2023

This study aims to determine and analyze the effect of capital intensity, profitability, and leverage on tax avoidance in companies listed on the Indonesia Stock Exchange in the property and real estate sector during 2019-2021. The research method used is quantitative and uses research variables including "Capital Intensity" (X1), "Leverage" (X2), and "Tax Avoidance" (Y). The sample of companies using purposive sampling method in this study obtained 22 property and real estate companies during the 2019-2021 period. The research data used is secondary data with a Structural Equation Modeling (SEM) approach based on Partial Least Squares (PLS). This study has results that show, a) p-value capital intensity on tax avoidance 0.014 < 0.05; c) p-value leverage on tax avoidance 0.003 > 0.05. Conclusion, capital intensity and leverage can significantly affect the increase in tax avoidance in property and real estate sector companies.

Keywords: Tax Avoidance, Capital Intensity, Leverage, Property and Real Estate
Pengaruh Volume Perdagangan, Earning Per Share (EPS), Price To Book Value (PBV), Net Profit Margin (NPM), Terhadap Harga Saham (Perusahaan Manufaktur, Bursa Efek Indonesia Sub Sektor Makanan Dan Minuman)
Authors: Hutasoit Sehat Mikael Pahottua , Sipayung Rohhiasni , Liliat Wirda , Ginting Bena br
Published: October 2023

Stockf  investment is one investment that attracts a lot of investor interest. Even though there is a riskf  becausef   stocksare very sensitive to changesf  that can have anf  impact on stockf        prices.   However,  stockf        investment   offersf        benefitsf        and   very   high   return opportunities. The purpose of this research was conducted to determine and analyze the effect oftradingf  volume, earningsf  per share, pricef   tof  bookf  value, net profit margin on stock prices. The population of this studyaref   food and beverage sub-sector companies listed  on  the  Indonesian  stock exchange  in  2017-2021.  Thef   number ofsamples in  this researchf were 14 companies with purposive sampling method, namely sampling based on certain criteria.Thef analysisf uses multiple choicef regressionf with thef results showing that trading volume, earnings per share, price bookf  value, and netf  profit margin affect stockf prices.  Based  onf   the  resultsf   of  research  that  has  been  conducted  on  stock prices,  the following conclusions can be drawn. From the simultaneous test results with the F testf  it can  be  concluded thatf    thef    company's  financialf    performance  as  measured  by  trading volume, EPS,f  PBV, andf  NPM have an influencef  onf  stockf  prices. From thef  results of the partialf  test or t test, it can be concluded that partially tradingf  volumef  and PBVvariables dof   not  significantly  influence  stockf   prices.  Whilef   the  EPSf   and  NPM  variablesf   have  a significant influenceon stock prices.

Keywords: trading volume, earningf  per share, price to book value,f  net profit margin to stockf price.
Pengaruh Karakteristik Pekerjaan, Motivasi Dan Disiplin Kerja Terhadap Kepuasan Kerja (Studi Pada Karyawan Kantor Kecamatan Semarang Utara)
Authors: Kirana Melisa Candra , Rijanti Tristiana
Published: October 2023

This study aims to analyze the effect of job characteristics, motivation and work discipline on job satisfaction at the Kantor Kecamatan Semarang Utara. The population of this study were all employees of the Kantor Kecamatan Semarang Utara and the sample used was 82 employees. Sampling using Random Sampling and collection methods using a questionnaire. The analysis in this study uses multiple linear regression analysis with the help of SPSS version 25. Based on the results of the study that job characteristics have a positive and significant effect on job satisfaction, motivation has a positive and significant effect on job satisfaction, and work discipline has a positive and significant effect on job satisfaction.

Keyword: Job Characteristics, Motivation, Work Discipline, And Job Satisfaction.
Pengaruh Karakteristik Individu, Lingkungan Kerja Dan Komitmen Terhadap Kinerja Pegawai Pada Dinas Badan Pengelola Keuangan Dan Aset Daerah (BPKAD) Rantauprapat
Authors: Harahap Baharuddin Yusuf Irianda , Haraha Nova Jayanti , Halim Abd.
Published: October 2023

This study aims to analyze the effect of individual characteristics, work environment and commitment to employee performance at the Regional Financial and Asset Management Agency (BPKAD) Rantauprapat. The research method used in this research is quantitative. In this study, the population was 40 employees of the Regional Financial and Asset Management Agency (BPKAD) Rantauprapat. The research sample used saturated sampling technique by drawing the entire existing population to serve as a research sample with a total of 40 people. The data collection techniques used are observation, documentation studies and questionnaires. The method of analysis of this research is multiple linear regression with the SPSS program. The results of the study prove that Individual Characteristics have a positive and significant effect on Employee Performance at the Regional Financial and Asset Management Agency (BPKAD) Rantauprapat. Work Environment has a positive and significant effect on Employee Performance at the Regional Financial and Asset Management Agency (BPKAD) Rantauprapat. Commitment has a positive and significant effect on Employee Performance at the Regional Financial and Asset Management Agency (BPKAD) Rantauprapat. Individual Characteristics, Work Environment and Commitment simultaneously have a positive and significant effect on Employee Performance at the Regional Financial and Asset Management Agency (BPKAD) Rantauprapat. The coefficient of determination of 0.585 means that employee performance can be explained by the variables of Individual Characteristics (X1), Work Environment (X2) and Commitment (X3) by 58.5%, while the remaining 41.5% can be explained by other variables not examined in this study.

Keywords: Individual Characteristics, Work Environment, Commitment, Employee Performance
Was King David an Exorcist?
Authors: Biegas Marcin
Published: October 2023

This article analyses the image of David as an exorcist. The choice of the research topic has been inspired by the fact that in the literature, more specifically, in an article by Kenneth E. Pomykala, this issue is presented in a very general way, by indicating only texts where such an image of David can be found, without entering into their deeper interpretations. Also, no scientific article covering this topic in detail has been published to date. The paper is divided into three parts. The first part presents biblical texts in which – as Pomykala has proven – one can talk about this characteristic of David. In the second part, fragments of two Qumran manuscripts, 11Q5 and 11Q11, are analysed. Finally, an analysis of the literaturę of early Jewish writings, portraying David as an exorcist, is provided.
Wpływ lockdownu na rozwój energetyki prosumenckiej i zapotrzebowanie na energię elektryczną w gospodarstwie domowym
Authors: Czupińska Katarzyna , Chodorowska Dorota
Published: October 2023

W artykule przedstawiono wpływ pandemii na zapotrzebowanie energii elektrycznej dla typowego polskiego gospodarstwa jednorodzinnego. W tym celu posłużono się metodą studium indywidualnego przypadku. Materiały pobrane zostały z  indywidualnego konta PGE eBOK oraz aplikacji do fotowoltaiki Solis Home. Analiza porównawcza zapotrzebowania na energię elektryczną obejmowała dwa okresy: 20–31 marca 2020 r., czyli okres pierwszego lockdownu, oraz 20–31 marca 2021 r. W 2021 r. zaobserwowano znaczne obniżenie się zapotrzebowania w stosunku do tego samego okresu z roku poprzedniego. W prezentowanej pracy przedstawiono również strukturę produkcji energii elektrycznej w Polsce oraz wpływ pandemii na rozwój energetyki prosumenckiej, w szczególności na fotowoltaikę.
THE PERFORMANCE OF PACIFIC WHITE SHRIMP INFECTED BY Vibrio harveyi AFTER MANGROVE LEAF EXTRACT SUPPLEMENTATION
Authors: Linayati Linayati - , Maghfiroh Maghfiroh , Prasetyo Adhitya Wisnu , Yahya M. Zulkham
Published: October 2023

This research investigated the advantages and determined the optimal dosage of mangrove leaf supplementation to enhance growth and disease resistance in shrimp. PL-20 Pacific White Shrimp were given different doses of mangrove leaf extract added to their feed: 0 ppm/500 g (A), 225 ppm/500 g (B), 250 ppm/500 g (C), and 275 ppm/ 500 g (D), over a 30-day period. This experimental research was conducted using a completely randomized design with four treatments and three replications each. Several parameters were observed: growth, feed conversion ratio (FCR), energy protein productivity (EPP), and subsequent exposure to Vibrio harveyi to assess survival rate (SR). The obtained data underwent ANOVA analysis, which results demonstrated significant influence in shrimp growth, with the most notable improvement observed in treatment D. Treatment D also exhibited the highest SR value following the challenge test. Throughout the study, water quality parameters remained within the suitable range for fostering shrimp growth
Pemberdayaan Pada Remaja Putri dan Wanita Usia Subur Dalam Mengatasi Nyeri Menstruasi Dengan Pemanfaatan Tanaman Herbal Daun Pepaya
Authors: Abidah Siska Nurul , Rahayu Esty Puji , Rizki Lailatul Khusnul , Safitri Yati Isnaini , Syarifah Mustika Chasanatusy
Published: October 2023

Remaja maupun wanita usia subur saat menstruasi kebanyakan mengalami nyeri menstruasi. Masalah ini jika tidak segera di tangani akan menganggu aktivitas dan berlanjut pada masalah kesehatan reproduksi lainnya. Sehingga perlu strategi dalam penanganan masalah tersebut salah satunya menggunakan terapi herbal yaitu menggunakan daun papaya. Masalah prioritas mitra saat ini masih banyak remaja putri yang mengeluh nyeri menstruasi, masih rendahnya pengetahuan remaja putri akan pemanfaatan tanaman herbal daun papaya untuk mengurangi nyeri menstruasi dan penyuluhan kesehatan secara aplikatif tentang alternative mengurangi nyeri menstruasi sama sekali belum pernah dilakukan Tujuan kegiatan pengabdian kepada masyarakat ini adanya peningkatan pengetahuan melalui upaya kegiatan pemberian edukasi tentang pemanfaatn tanaman herbal daun papaya untuk mengurangi nyeri dismenorea. Kegiatan pengabdian masyarakat dilaksanakan selama 1 bulan dengan peserta remaja putri dan wanita usia subur di Komunitas Wepose Wonokromo Surabaya sebanyak 28 orang. Kegiatan ini dengan cara memberikan Pendidikan Kesehatan menggunakan media power point, LCD dan leaflet tentang penanganan dismenorea menggunakan daun papaya dengan metode ceramah dan tanya jawab. Pengukuran tingkat pengetahuan dengan cara melakukan pre test sebelum pemberian edukasi selanjutkan setelah pemberian edukasi dilakukan post test. Hasil kegiatan pengabdian masyarakat ini didapatkan tingkat pengetahuan saat pre test didapatkan skor 32,1% sedangkan saat post test tingkat pengetahuannya meningkat menjadi 89,3%. Kesimpulan kegiatan pengabdian masyarakat ini adalah terdapat peningkatan pengetahuan remaja putri dan wanita usia subur dalam melakukan penanganan nyeri dismenorea dengan menggunakan tanaman herbal salah satunya menggunakan daun pepaya. Sehingga diharapkan remaja dan wanita usia subur dapat secara mandiri mengatasi nyeri menstruasi dengan minim efek samping
Implementasi Terapi Komplementer Dalam Mengatasi Emisis Gravidarum
Authors: Anggasari Yasi , Mardiyanti Ika , Handayani Nanik , Ariesta Ratna , Puspitasari Renny Novi
Published: October 2023

Pada Trimester 1 hampir 50 % Wanita hamil akan mengalami mual muntah atau disebut dengan emisis gravidarum, ketidaknyaman ini juga dialami oleh hampir sebagian besar ibu hamil di Wilayah Posyandu RW 2 Kelurahan Pacar Kembang. Apabila tidak segera ditangani ketidaknyaman tersebut dapat menyebabkan dampak yang serius bagi ibu dan janin. Emisis gravidarum ini dapat ditangani dengan cara berkomunikasi, memberi informasi serta memberikan obat atau vitamin B kompleks ataupun vitamin B6 dan beberapa tindakan non farmakologis juga dapat digunakan dalam penanganan emisis gravidarum tersebut diantaranya yaitu pemberian aroma terapi, hypnosis, akupresure dan yoga. Kegiatan PKM ini bertujuan untuk meningkatkan pengetahuan serta ketrampilan ibu hamil tentang emisis gravidarum dan cara penanganannya dengan menggunakan teknik self hypnosis dan prenatal yoga. Kegiatan PKM ini dilakukan di Wilayah Posyandu RW 2 Kelurahan Pacar Kembang dengan melibatkan ibu hamil dan kader  sebanyak 30 orang , selama 1 bulan. Metode yang digunakan pada Pengabdian Masyarakat ini menggunakan metode ceramah, tanya jawab serta memberikan edukasi dalam bentuk video tentang self hypnosis dan prenatal yoga. Tingkat pengetahuan ibu hamil dan kader diukur Prepost pemberian edukasi dengan  menggunakan kuesioner. Hasil kegiatan ini menunjukkan bahwa ibu hamil dan kader mempunyai tingkat pengetahuan yang baik setelah diberikan edukasi tentang emisis gravidarum dan penanganannya dengan self hypnosis dan prenatal yoga, hal ini dapat terlihat dari skor rata-rata pre test sebesar 33,3% dan skor rata-rata post test sebesar 73,3% sehingga diharapkan Ibu hamil dapat melaksanakan teknik self hypnosis dan prenatal yoga secara mandiri untuk mengurangi emesis gravidarum
Sosialisasi Penggunaan Anggaran Dana Desa Untuk Meningkatkan Pembangunan Infrastruktur Desa Molowahu
Authors: Hidayat Andi Sahrul , Djau Rahman A , Gobel Fendi Faisal , Talango Novriyanti , Rauf Wawan , Palilati Mifidyah Putri , Saleh Mohamad Mirza
Published: October 2023

Pengabdian kepada masyarakat ini bertujuan untuk meningkatkan pemahaman dan kesadaran warga terkait penggunaan anggaran dana desa dalam pembangunan infrastruktur desa. Penelitian ini mengidentifikasi sejumlah masalah yang dihadapi oleh masyarakat terkait pengelolaan dana desa, antara lain kurangnya pengetahuan warga terkait mekanisme penggunaan dana desa, arogansi Kepala Desa, ketidaksesuaian Rencana Anggaran Belanja (RAB) dengan pelaksanaan, ketidaksesuaian pekerjaan dengan spesifikasi yang telah ditetapkan, tidak adanya nota pembelian bahan, manipulasi nota, item pekerjaan yang tidak dikerjakan, pekerjaan yang tidak selesai, pekerjaan yang tidak dapat digunakan, aliran keuangan yang tidak jelas, penggunaan alat berat yang berlebihan, dan perubahan pekerjaan yang tidak jelas. Berdasarkan permasalahan tersebut di peroleh solusi antara lain pekerjaan yang akan dikerjakan harus berdasarkan permusyawaran dan permufakatan, penjelasan teknis pekerjaan, keterlibatan ruang lebih fasilitator teknis, keterlibatan tenaga teknis yang memahami RAB dalam pelaksanaan pekerjaan, laporan teknis, serta pengawasan dan Monitoring
Pemanfaatan Limbah Kulit Kopi sebagai Pupuk Kompos di kelompok Tani LMDH Campaka Bentang Desa Loa Majalaya
Authors: Wahyuni Dwi , Darliana Ina , Srimulyaningsih Reni , Purwanto Asep , Tan Ishak
Published: October 2023

Limbah dari produksi olahan kopi adalah kulit kopi. Jumlah kulit kopi berkisar antara 50 – 60 persen dari hasil panen. Kulit kopi merupakan limbah yang belum dimanfaatkan petani secara optimal. Salah satu upaya yang dapat dilakukan untuk penanganan jumlah limbah kulit kopi yang semakin meningkat yaitu dengan cara mengolah limbah kulit kopi menjadi kompos. Oleh karena itu dilakukan kegiatan pengabdian pengolahan kompos berbahan limbah kulit kopi   di kelompok Tani LMDH Campaka Bentang Desa Loa Majalaya yang bertujuan untuk memberikan pengetahuan tentang cara membuat kompos berbahan kulit kopi yang bisa digunakan sebagai pupuk bagi petani kopi dan juga untuk tanaman pertanian lainnya, serta memberikan informasi yang terkandung dalam kulit kopi yang menjadi potensi bagi limbah kulit kopi sebagai pupuk kompos. Kegiatan pengabdian meliputi penyuluhan, pengamatan lapang, praktik, dan uji lab limbah kulit kopi. Keberhasilan yang diperoleh dari kegiatan pengabdian ini adalah kegiatan penyuluhan berjalan lancar dan kelompok Tani LMDH Campaka Bentang Desa Loa Majalaya memperoleh informasi yang terkandung dalam limbah kulit kopi yang menjadi potensi menjadi pupuk kompos.

Kata kunci: limbah kulit kopi, pupuk kompos
Upaya Peningkatan Pemasaran Industri Kecil Menengah Dodol Mangga Hj Darmen
Authors: Nurhayati Nunung
Published: October 2023

Pada bidang pertanian dan horikultura, Indramayu merupakan salah satu penghasil mangga. Mangga Di Indramayu sangat bervariasi, antara lain mangga gincu, bapang, gajah, cengkir, arum manis, golek, dan lain - lain. Salah satu olahan mangga adalah dodol mangga. Dalam dunia usaha, saat ini pemasaran online sangat diperlukan untuk mengembangkan perusahaan, tidak terkecuali usaha dodol mangga. Salah satu Industri Kecil Menengah (IKM) yang bergerak di bidang produksi pengolahan produk mannga adalah IKM Hj. Darmen. Permasalahan yang dihadapi IKM ini adalah permasalahan pemasaran. Tujuan pengabdian ini adalah mengenalkan pemasaran secara online melalui aplikasi Online sehingga dapat meningkatkan jumlah produksi. Hasil pengabdian adalah perbaikan desain atau logo, perbaikan kemasan, dan pemasaran melalui instagram.
Analisis Kelayakan Usaha Budidaya Porang (Amorphophalus muelleri Blume) di Desa Bero Kecamatan Manyaran Kabupaten Wonogiri
Authors: Ma'arif Syafii , Dewati Rosita , Retnaningsih Nugraheni
Published: October 2023

Porang adalah jenis tanaman umbi yang dapat tumbuh dengan baik pada keadaan tanah kering dan banyak ditemukan  pada daerah yang beriklim tropis. Kecamatan Manyaran merupakan Daerah dengan jenis tanah didominasi oleh tanah merah, lahan pertanian kering, dengan sumber air yang relatif jarang dan kondisinya sesuai dengan syarat tumbuh tanaman porang. Tujuan penelitian untuk mengetahui kelayakan usahatani umbi porang di Desa Bero Kecamatan Manyaran Kabupaten Wonogiri. Metode dasar yang digunakan yaitu deskriptif. Pemilihan lokasi penelitian dilakukan dengan sengaja di Desa Bero. Jumlah petani sampel adalah 30 orang petani pemilik penggarap yang sudah melakukan panen porang. Metode analisis yang digunakan yaitu analisis R/C Ratio, B/C Ratio dan BEP. Hasil penelitian menunjukan bahwa 1) rata-rata petani porang memerlukan biaya tetap Rp. 196.467 dan biaya variabel Rp. 2.940.767 dengan total biaya produksi sebesar Rp. 3.137.234 per usahatani atau sebesar Rp. 8.963.525/Ha. Penerimaan   sebesar Rp. 15.615.284  per usahatani atau sebesar Rp. 44.615.097/Ha. 2) Pendapatan petani porang sebesar Rp. 12.478.049 per usahatani atau Rp. 35.651.570/Ha dalam satu kali musim tanam. 3) Hasil analisis usahatani porang menunjukan jika nilai dari R/C Ratio sebesar 4,98 dan analisis B/C Ratio sebesar 3,98 yang artinya usahatani layak untuk diusahakan dan di kembangkan. Besarnya nilai analisis BEP produk umbi batang adalah 59,4 Kg atau 169,7 Kg/Ha dan BEP harga sebesar Rp. 4.315/Kg. Analisis BEP produk bulbil sebasar 2,3 Kg atau 6,6 Kg/Ha dengan BEP harga sebesar Rp. 36.650/Kg.
Kontribusi dan Trend Produksi Jagung di Kabupaten Banyumas
Authors: Saputro Wahyu Adhi , Viana Candarisma Dhanes Noor , Rosyid Ali Hasyim Al
Published: October 2023

Jagung merupakan pangan alternatif selain nasi yang masih dikonsumsi oleh sebagian besar masyarakat di Indonesia. Kebutuhan akan jagung tidak hanya bersumber pada konsumsi masyarakat saja namun juga adanya permintaan dari industri pakan ternak. Perkembangan komoditas pertanian di Indonesia penting untuk diketahui terutama mengenai permasalahan naik turunnya produksi komoditas sehingga bisa ditentukan langkah antisipasinya. Penelitian ini bertujuan untuk mengetahui kontribusi dan trend produksi jagung di Kabupaten Banyumas. Penelitian ini merupakan penelitian deskriptif analitik menggunakan data sekunder berbentuk time series yang berasal dari Badan Pusat Statistika. Data yang digunakan berasal dari tahun 2012 hingga tahun 2021. Metode analisis data yang digunakan adalah analisis kontribusi dan analisis trend produksi. Hasil penelitian menyatakan bahwa Produksi jagung di Kabupaten Banyumas tertinggi terjadi pada tahun 2019 dengan capaian produksi lebih dari 34 ribu ton jagung sedangkan pencapaian produksi terendah terjadi pada tahun 2014 hanya mencapai 14 ribu ton jagung saja. Berdasarkan hasil penelitian juga dapat diketahui bahwa kontribusi produksi tertinggi terjadi pada tahun 2020 yaitu sebesar 1,09 persen. Peramalan produksi jagung di Kabupaten Banyumas bernilai positif sehingga diproyeksikan produksi jagung akan meningkat pada beberapa tahun ke depan.
Carotid Doppler Study in Patients with Cerebral Infarction
Authors: Ahmed Laith , Abdullah Noori Firas
Published: October 2023

Background: Duplex ultrasound is inexpensive, non-invasive and can provide functional and anatomical information about vessel stenosis and plaque morphology. Color duplex flow ultrasonography has thus become the most widely used noninvasive method of assessing extra cranial cerebrovascular occlusive disease.Objectives:To find the relation of the severity of carotid artery stenosis, intima media thickness, and atheromatous plaque morphology with the size of cerebral infarction.Patients and Methods: A prospective study, conducted from September 2010 to May 2011, in Department of Radiology in Baghdad Teaching Hospital. A total of 62 Patients with clinical & radiological (brain CT) diagnosis of acute stroke, (42 males & 20 females) had been referred from Medical & Neurological units to the Radiology Department / Ultrasound Unit for carotid arteries examination.Results: Thirty out of 62(48.4%) patients had evidence of ipsilateral carotid stenosis distributed as: 18 out of 30 patients (60%) had < 50% stenosis, 8 patients (26.7%) had 50-69% stenosis, and 4 patients (13.3%) had > 70% stenosis. Also in our study we found that homogenous hypoechoic and ulcerated plaques were more frequent in patients with large size infarcts.Conclusion: From this study we concluded that the size of cerebral infarction is related to degree of ipsilateral carotid artery stenosis, especially when the plaque is soft with irregular or ulcerated surface, and that increased intima media thickness of common carotid artery is strongly associated with stroke and its risk factors.
Stability Analysis of Stilling Basin Slope on the Left Bank of Kala Hydropower Station
Authors: Cheng Yongjin , Pan Bing , Chu Weijiang , Cao Aiwu , Wu Jiayao , Wang Can
Published: October 2023

A stable slope is a crucial factor for water reservoir in a hydropower station regarding power generation. This paper mainly uses FLAC3D to analyze the slope stability and excavation with reinforcement support of stilling basin on the left bank of Kala Hydropower station regarding different operation cases. The numerical analysis reveals that the slope stability meets the design specification of class A and II slopes, while the potential instability area is mainly located in fragmented structural rock mass and class IV rock mass. After the excavation and reinforcement, the stability of the slope is improved to a certain extent, and Sericitolited Sand Slate is located at the foot of the slope, which basically has no effect on the slope stability. The slope unloading and toppling deformation of the left bank regarding the engineering area is obvious, and the shallow surface rock mass is prone to relaxation and damage during the slope excavation process. Therefore, it is recommended that the support should be on time, and according to the geological situation revealed, appropriate reinforcement treatment can be taken to ensure the safety and stability of the construction period. Sericitolited Sand Slate has a certain range of exposure during the excavation process, resulting in slightly higher slope deformation, so it should be carefully excavated. The slate is easy to soften when exposed to water, so attention should be paid to the timeliness and effectiveness of drainage measures during the construction period to avoid local collapse damage caused by softening of rock mass.
Disturbance of Neutron Flux Measurement Under Post-Accident Conditions in Nuclear Power Plant
Authors: Jiao Zhenying , Li Xiaobo , Kong Kaihe
Published: October 2023

Sub-criticality monitoring under post-accident conditions is of great significance for emergency operations in nuclear power plants, as many post-accident physical phenomena may disturb the measurement process of neutron flux outside the reactor, how to quantitatively evaluate the disturbances is therefore becoming a key issue for core reactivity monitoring in post-accident conditions. In this paper, the Monte Carlo model is established based on the actual neutron diffusion process to quantitatively evaluate the disturbance to neutron flux measurement outside the reactor considering the following post-accident physical phenomena: group (N-1) control rod assembly dropped after shutdown, reactor cavity flooding, core cavitation, core draining. The amplification and attenuation factors due to these physical phenomena are obtained, based on which proposals are suggested to realize an accurate diagnosis of the core sub-criticality state and to prioritize the nuclear power control in post-accident conditions, this is essential for operating strategy orientation and fuel clad barrier integrity control in the emergency operation of nuclear power plants.
Simulation of Design and Operation of a Hybrid PV (Photovoltaic)/PEMFC (Proton Exchange Membrane Fuel Cell)/Battery Power System for a Tugboat
Authors: Xin Rongbin , Wang Zongyu , Zhai Jinguo , Zhang Jifeng , Cui Daan , Ji Yulong
Published: October 2023

For greener and more sustainable offshore operations, the optimal design of a renewable energy hybrid power system for a tugboat was presented in this paper. Its working performance and cost were analyzed. The structure and daily operating characteristics of the hybrid system, including power distribution, energy capacity limitation, and state of charge (SOC), were studied through simulation modeling by MATLAB software. The total power of the hybrid power system was provided respectively from the solar PV, PEMFC, and battery. By analyzing the energy contribution from various renewable energy systems at different times and operating conditions, the daily electricity demand, hydrogen consumption, and costs of the tugboat were obtained. The integration of renewable power systems such as solar PV and PEMFC is an attractive solution for onboard power generation. Especially for the tugboat working in offshore operations, it can effectively reduce the pollutant emissions in areas such as coastal and inland ports where atmospheric pollutant emissions are controlled.
A Hybrid Detection Approach for Carbon Emission Intensity Reduction Mechanism Under Environmental Regulations
Authors: Wang Jing , Yi Xiang
Published: October 2023

In this paper, an action mechanism of the carbon emission intensity (CE) reduction relevant to the level of industrial agglomeration (IA), scientific and technological progress (TECH), foreign direct investment (F), and environmental regulation (ER) is studied by applying a hybrid framework driven by the K-means clustering algorithm and the stepwise multiple linear regression (SMLR)-based models. To concisely clarify the relationship between the objected variable and impact factors, three echelons of urban agglomerations are summarized in this study from the different industry characteristics of the whole 21 cities in Guangdong, which exhibits a strong growth of the secondary industry in China. Stepwise multiple linear regression (SMLR) analysis is proposed to reveal that strict environmental regulations for the urban agglomeration with low overall development level and weak industrial foundation are more likely to stimulate the “innovation compensation” effect. For the urban agglomeration in the growth stage of industrial economic development or distributed in the developed region, strengthening the level of IA and highlighting the core guiding role of environmental regulation seems to make more sense to reduce the carbon emission intensity and promote the regional industrial green upgrading.
Research on Wind Turbine Maintenance Based on Data-Physical Fusion Modeling
Authors: Wang Weilong , Cai Hongxia
Published: October 2023

With the large-scale application of wind power generation technology, its maintenance and repair have received extensive attention. Since wind turbines are complex equipment coupled with multiple fields, the faults are sudden and diverse, and the fault samples are scattered. At the same time, wind turbine operation data has non-linear and unstable time-series characteristics. Single data-driven and physics-driven methods can no longer well meet the current wind turbine maintenance needs. This paper proposes a wind turbine maintenance method with data-mechanism fusion modeling. A data-driven algorithm considering the time-series characteristics of wind turbine operation data is designed. The fusion strategy for updating the boundary parameters of the machine physical model is proposed. Simulation calculations are completed using a fluid-solid coupling model. Simulation results optimize the wind turbine maintenance strategy to guide wind farm maintenance activities.
A Relation Extraction Method for GIS Defect Text Based on Self-Attention
Authors: Kong Lingming , Wang Yong , Chen Yilong , Chen Jun , Ji Wangwei
Published: October 2023

During the daily inspection and maintenance of distribution networks, gas insulated switchgear (GIS) accumulates a significant amount of defect texts. Extracting structured knowledge from these texts can considerably enhance equipment operation and maintenance efficiency. Accordingly, this paper proposes a relation extraction method for GIS defect text based on a self-attentive neural network. Firstly, a pre-trained language representation model is employed to acquire the word embedding vectors of the input sentences and entity pairs. Next, a self-attentive neural network is utilized to analyze the extracted sentence embeddings and extract sentence feature vectors. Then, the entity feature vectors are obtained by pooling the embedding vectors of the entity pairs, and the position features are acquired by encoding the entities’ positions in the sentences. Ultimately, the sentence features, entity features, and location features are classified to determine the entity pairs’ relation. The experimental results demonstrate the efficacy of the proposed algorithm, with an accuracy rate of over 70% on the dataset. This achievement provides a potent tool for constructing large-scale operation and maintenance knowledge graphs.
Visualization Experiment of Condensation in Expansion and Contraction Microchannels
Authors: Liu Weihong , Ling Xiang
Published: October 2023

This paper conducted visualization experiments on condensation heat transfer of three different types of microchannels with periodic expansion and contraction structures. The difference in microchannels lies in the relative lengths of the expansion and contraction sections. Using pure steam as the experimental working fluid, the visualization experiment observed dropwise condensation, annular condensation, injection condensation, and intermittent condensation. Besides, different phenomena of “gasping” and “breakpoint antedisplacement” were observed in the injection flow, which was different from those in straight microchannels. In addition, a two-phase flow map was established for three kinds of microchannels. The findings indicated that under the same steam mass flux, increasing the length of the expansion section of the microchannels and reducing the length of the contraction section led to an augmented annular flow area within the microchannels. Increasing the length of the microchannel expansion section and reducing the length of the contraction section are beneficial for reducing the frictional pressure drop of vapor condensation, but maintaining the same length of the microchannel expansion section and contraction section can achieve the best condensation heat transfer effect.
Preparation and Characterization of 4-Methylumbelliferone-β-Cyclodextrin Inclusion Complex Based on Computer Hydrogen Spectroscopy
Authors: Yan An , Chen Yajun , Che Hao , Zhu Chenhao , Liu Xia
Published: October 2023

With the development of the times, there are more and more researches on 4-Methylumbelliferone (4-MU). Now the problem of 4-MU research is that the water solubility of 4-MU is poor, leading to its low bioavailability. It is necessary to improve the water solubility of 4-MU by β-Cyclodextrin (β-CD) inclusion complex prepared by computer hydrogen spectroscopy technology. In this paper, the optimum preparation process was selected by an orthogonal test. 4-Methylumbelliferone-β-Cyclodextrin inclusion complex (MCIC) was characterized by computer hydrogen spectroscopy using ultraviolet spectrum, infrared spectrum, X-ray diffraction and nuclear magnetic resonance hydrogen spectrum. And its solubility was determined. The results showed that MCIC was confirmed by ultraviolet spectrum, infrared spectrum, X-ray diffraction and hydrogen magnetic resonance spectroscopy. The solubility test showed that the water solubility of 4-MU increased by nearly 20 times after the inclusion complex was formed. Therefore, it can be concluded that the preparation process of MCIC based on computer hydrogen spectrum technology is simple, cheap and stable. The solubility and bioavailability of 4-MU were significantly improved by the preparation of the inclusion complex.
Chromium Substituted Heteropolyanion PW11O39Cr(III)(H2O)4- Visible Light Catalytic Degradation of Rhodamine B
Authors: Li Meiyi , An Changwei , Liu Tong
Published: October 2023

In order to utilize solar energy to remove organic dye pollutants from water, Kegn type chromium was used to replace heteropoly anion PW1O39Cr (H2O) (PW1Cr) is a photocatalyst. The photocatalytic degradation of Rhodamine B (RhB), an organic dye pollutant in water, by PW11Cr under visible light irradiation was studied in detail, The aqueous solution containing 50 umol·L-1 PW11Cr and 10mol·L-1 RhB was irradiated under visible light at 200W for 120 minutes, and the degradation rate of RhB reached 100%. The total organic carbon removal rate was about 32%. Under acidic conditions with high PWCr concentration and pH<3.5, PW11Cr and RhB were prone to complexation, resulting in a slower photodegradation rate of RhB. However, under conditions with PW11Cr concentration of 50 umoL·L-1 and solution approaching neutral, the photodegradation rate of RhB was faster.
Research on Pricing Strategy of Trench-Cutting Re-Mixing Deep Wall Construction Method for the Fuxinyuan Project
Authors: Liu Hui , Wang Yiting , Ding Jiajia , Sun Yong , Zhao Yanfeng
Published: October 2023

TRD construction method is also known as the Trench-Cutting Re-mixing Deep wall construction method, continuous wall pouring under cement reinforced land construction method, etc. It was developed by Japan in the early 90s of the last century and introduced into China in 2007. In 2018, it was introduced into Yunnan Province and is applied to the deep foundation pit support system of the Kunming Fuxinyuan project. Since the pricing document of Yunnan Province does not have the calculation method of this construction method, how to accurately determine the costs of this construction method has become one of the difficulties in the project management of the construction project. This paper discusses the pricing strategy of the TRD construction method of the Fuxinyuan project and intends to provide experience references for similar projects.
Preliminary Study on the Technical Solution of Highway Plant Protection Guided by the Ecological Protection of the Yellow River Basin: A Case Study of the First Phase of Zhuoni-Hezuo Expressway Project in Gansu Province
Authors: Hou Jihong , Li Dongrui , Wang Liang
Published: October 2023

Based on the ecological protection and high-quality development strategy of the Yellow River Basin, starting from the actual requirements of ecological protection of the Yellow River Basin in Gannan City, Gansu Province, combined with the Zhuoni to Hezuo highway project phase I, the design of highway slope greening plant protection measures was evaluated. According to the actual needs of the project, the plant protection technology is proposed from the aspects of plant grouping, vegetation protection technology, topsoil utilization, etc. The results of this paper can provide a reference for the project and the environmental protection technology of the expressway construction project in the Yellow River Basin of Gansu Province.
Source Contributions to PM2.5 in Three Megacities of Beijing, Tianjin and Shanghai in China
Authors: Li Bohan , Fu Kai
Published: October 2023

This study quantifies the source contributions to PM2.5 in three major Chinese cities of Beijing, Tianjin, and Shanghai during the period of June to August 2016. The sensitivity analysis is employed by individually eliminating each sector to identify their respective contributions. The numerical simulations reveal that industry is the dominant contributor to PM2.5 pollution in all three cities with contributions ranging from 41.01% to 53.42%. The contributions of residential-commercial, energy and transportation are in the range of 11.25% to 27.21%, 17.45% to 20.61%, and 5.89% to 15.02%, respectively. Agriculture and deforestation-wildfire are found to contribute 4.23% to 7.28% and 2.60% to 5.30%, respectively.
Study on the Spatial Conflict Measure and Action Mechanism of Man-Land System in Three-River-Resource National Park
Authors: Hu Xiwu , He Fujie , Ma Juan
Published: October 2023

The balance of man-land relationships is at the heart of national park construction, and alleviating spatial conflicts is key to achieving man-land coexistence in national parks. In this paper, based on the 2020 sampling survey and ecological monitoring data, we use the coupling degree model, the barrier degree model, and the regression model to measure the level of spatial conflict in the man-land system and explore its mechanisms of action. The study shows that: (1) The spatial conflict in the man-land system of Three-River-Resource National Park is apparent, and the coupling coordination degree of 98.11% of 53 administrative villages belongs to the type of near disorder and mild disorder. (2) From the perspective of internal action mechanism, the severe obstacle factors of spatial conflict of the man-land system have green development mode and soil-water resources conservation, the moderate obstacle factors have the ability of asset accumulation ability, competition and cooperation ability, and the ability to continue to increase income, and the mild obstacle factors have the ability of health security. (3) From the perspective of external direct action mechanisms, the government’s ecological governance capacity and the degree of resource dependence have a significant effect on the spatial conflict of the man-land system, and the per capita disposable income has significantly aggravated the conflict. (4) From the perspective of external indirect action mechanism, environmental pressure has a significant regulatory effect on the government’s ecological governance ability and the spatial conflict between the man-land system, and the intensity of economic activity has a significant intermediary effect on the relationship between resource dependence and the spatial conflict of man-land system.
Spatial and Temporal Variation of Soil Microbial Biomass Phosphorus in Apple-Pear Orchard in Yanbian Area
Authors: Bai Yuting , Zhang Qing , Zhang Ziqing , Yang Tingshuo , Liang Yunjiang
Published: October 2023

The soil microbial biomass acts as a vital source and reservoir of available nutrients in the soil, displaying a high degree of sensitivity to environmental conditions. It serves as a dynamic supplier of nutrients for plant uptake, making it an invaluable indicator to gauge changes in soil quality. This study aims to explore the influence of temporal and spatial succession on soil microbial characteristics by examining apple and pear orchard samples of varying cultivation durations (10, 25, 40, and 60 years) in the Yanbian area. The research focuses on analyzing and investigating the alterations in microbial biomass across different seasons (spring, summer, and autumn) and soil depths (0–20 cm, 20–40 cm, and 40–60 cm). The findings reveal noteworthy disparities in the content of microbial biomass phosphorus (MBP) concerning the seasons, cultivation years, and soil layers. Notably, the MBP content in the soil experiences a significant decline with increasing soil depth. MBP content increased first and then decreased with seasonal change. The soil MBP content was higher in the strong orchard (25 years and 40 years). The significant differences between different seasons, planting years, and different soil layers indicate that soil has different reserves of P under different spatiotemporal conditions. Therefore, our results help to develop guidelines for long-term sustainable land management in orchards.
Sponge City Renewal Strategy of the Old Urban Areas Under the Background of Systematic and Full-Field Promotion
Authors: Wang Yu , Liu Huifang , Zhang Wei , Wei Huijiao , Feng Lufei
Published: October 2023

The construction of the old urban areas is closely related to urban development. Problems are common in old urban areas in China, such as water logging, lack of green space and poor space environment. Sponge city construction is an effective measure to adapt to the rapid urban development and solve a series of problems in the old urban areas. The renewal and transformation of sponge cities in old town is problem-oriented and people-centered. It proposes sponge city renewal strategies such as “systematic” pattern, “acupuncture” implant and “demand-oriented” design to alleviate urban water logging from the source, reduce urban runoff pollution load and improve urban ecological environment. At the same time, green facilities complement gray facilities are in line with the requirements of the national dual-carbon target which effectively controls the “urban disease” of the old urban areas through sponge city.
Temperature Effects of Greening-Related Indices: A Case Study in China University of Mining and Technology in Xuzhou City, China
Authors: Zhou Hongxuan , Wang Chenrui , Yan Xinye
Published: October 2023

In order to regulate the urban thermal environment, scientific greening has become a hot spot in many fields. In this study, a mobile meteorological station and infrared thermal imaging camera were used to collect air temperature (Ta) and land surface temperature (TS) in various green spaces at the China University of Mining and Technology in the summer of 2020. Greening indices were obtained via field investigation and analyzed with Ta and TS statistically. The results showed that green view index, tree coverage (TC), and green volume were negatively correlated to both Ta and TS (P<0.05); while sky view factor was positively correlated to the two parameters (P<0.01). The joint effects of the above four indices were greater than the independent ones. Besides, the analytic hierarchy process and stepwise regression both indicated that the sky view factor was the most important factor to influence Ta and TS.
PCGM Model: Seeking the Best Light Pollution Intervention Strategy
Authors: Shen Siyao , Ma Long , Yan Tingting , Xin Jiayi , Chen Tianyou
Published: October 2023

In recent years, the increasingly serious problem of light pollution has attracted worldwide attention. The Proposed People Climate Geography Medium (PCGM) model is dedicated to providing quantitative analysis of light pollution in most parts of the world and to measure the risk level of light pollution in a certain place. The work selected the medium, human, climate, and geography to quantify the indicators, and used the Entropy Weight Method (EWM) and the Analytic Hierarchy Process (AHP) to measure the direct influencing factors. According to the experiment, the weight of geographical index is 0.7625, which is an important index to evaluate the intensity of light pollution. Through calculation, you can conclude that the corresponding weight of the number of enterprises (Gnobu) in the geographical index is 43% which means that the number of enterprises is directly related to the degree of light pollution. At the same time, the paper described three possible intervention strategies to solve light pollution: increasing forest coverage, reducing urban area, and reducing the number of enterprises.
Impact of Wind Loads on the Mechanical Behaviors of Prefabricated Partition Walls in Underground Stations
Authors: Shen Xiaoming , Xie Jun
Published: October 2023

Considering the factor of wind load, this study explores the engineering application of prefabricated assembled partition walls in underground stations. Using the finite element analysis software ANSYS, we simulate the displacement deformation and mechanical behavior of the assembled partition wall in the station under the action of wind load. At the same time, the mechanical characteristics of the assembled partition wall under the consideration of only self-weight factors are also used as a comparison to further analyze the main cause of partition deformation. We also extract the displacement data of the assembled partition wall in actual engineering and compare it with the numerical values obtained from the simulation software, providing theoretical support for actual engineering, and verifying the feasibility of ANSYS in engineering applications. The following conclusions are drawn self-weight is the main cause of partition deformation; the position and size of the holes directly affect the structural performance of the wall; the prefabricated assembled wall can meet the actual engineering needs of the subway.