bluuebunny/crossref_metadata_2025 huggingface dataset:
Finite Element Modeling and Visualization of Additive Ring Growing by 3DMP Method
Authors: Kirichek Andrey , Barinov Sergey , Fedonina Svetlana
Published: December 2020

The aim of the work is to obtain a finite element model of the additive growing process in the general case of a complex-shaped product using the 3DMP (3D Metal Print) method of wire deposition / surfacing by gas metal arc welding, visualization of the forming temperature fields. The problem is solved using the example of an elementary ring by creating a scalable model in the Ansys software package. The stages of creating a finite element model as well as the results of its approbation in the analysis of temperatures are given. The model visualizes the nature of the influence of the deposition / surfacing parameters on the temperature fields that are formed and dynamically change with the movement of the wire feedstock. In this case, the conditions of additive free shaping of a closed-form product are of no small importance. It becomes possible to visually assess the degree of heating and the volume of heated metal in the hazardous area, proceed further to the calculation of stress and strain fields in the grown product, and choose the correct technological parameters of the process. The obtained visual information makes it possible to perform a qualitative and quantitative assessment of the additive shaping result, to determine the required intensity of heat removal, which contributes to the grown product quality improvement as a whole.
Laparoscopy - Assisted pancreatoduodenectomy in the treatment of Peri - Ampullary tumors
Authors: Trần Hiếu Học ,   Trần Quế Sơn, Trần Mạnh Hùng, Vũ Đức Long, Nguyễn Ngọc Hùng, Trần Thanh Tùng, Triệu Văn Trường
Published: December 2020

Tóm tắt
Đặt vấn đề: Đánh giá kết quả bước đầu, chỉ định và biến chứng trong phẫu thuật nội soi hỗ trợ cắt khối tá tràng đầu tụy.
Phương pháp nghiên cứu: Mô tả tiến cứu 15 trường hợp được phẫu thuật tại Bệnh viện Bạch Mai từ 9/2016 – 9/2017.
Kết quả: Chỉ định mổ bao gồm: u bóng Vater (12 người bệnh), u đầu tụy (2 người bệnh), u nang đầu tụy (1 người bệnh). Tuổi trung bình: 53,6 + 11,8 (dao động 37 – 72 tuổi), thời gian mổ trung bình 265,3 + 55 phút trong đó thời gian mổ nội soi 139,5 + 44,3 phút với đường mổ mở dài 8,6 + 3,4 cm, tổng số hạch nạo vét trung bình 9+ 2,6 hạch. Ba người bệnh chuyển mổ mở (20%) với lượng máu mất trong mổ trung bình 438 + 305 ml, thời gian nằm viện 18,3 ngày. Tai biến và biến chứng gặp: 1 người bệnh cắt phải động mạch mạc treo tràng trên (6,7%), 6 người bệnh rò tụy (40%) chủ yếu mức độ A (26,6%), 4 người bệnh rò mật (26,7%), 3 người bệnh chậm lưu thông dạ dày (20%), 1 người bệnh tử vong (6,7%).
Kết luận: Phẫu thuật nội soi hỗ trợ có thể áp dụng điều trị các khối u vùng bóng Vater trên những người bệnh được lựa chọn. Hiệu quả và mức độ an toàn của phẫu thuật cần theo dõi thêm với số lượng lớn hơn.
Abstract
Introduction: We report the clinical short-term outcomes of laparoscopic-assisted pancreatoduodenectomy (LAPD) for periampullary tumors.
Material and Methods: A retrospective review of patients who underwent LAPD from 9/2016 to 9/2017 at Bach Mai University Hospital.
Results: Fifteen patients were included in this study. The preoperative diagnoses were ampullary carcinoma (n = 12), pancreatic head tumors (n = 2) and intraductal papillary mucinous neoplasm (n = 1). The median age was 53.6 years (range 37 – 72 years). The median operating time was 265.3 minutes (range 180 – 360 minutes) with the median time of laparoscopic approach was 139.5 mins and the median estimated blood loss was 438 ml (range 150 - 1241 ml). The median incision length for laparotomy was 8.6 cm (range 5 – 15 cm). The averaged lymph node collection was 9 + 2.6 nodes. The median hospital stay was 18.3 days with three patients that underwent conventional open surgery. One patient with injury superior mesenteric artery (SMA) during laparoscopic approach that needed be to repaired. Postoperative complications were pancreatic fistula (40%), bile leakage (26.7%), delayed empty gastric (20%) and mortality (6.7%).
Conclusion: LAPD is a technically safe and feasible alternative treatment for selected patients with periampullary tumors. The long-term outcomes and potential benefits of this technique need to be obsevered in a larger patient population.
Keyword: Pancreatoduodenectomy, Laparoscopic-assisted pancreatoduodenectomy, Laparoscopic pancreatoduodenectomy assisted by mini laparotomy.
Efficacy of Inhaled Salbutamol in the Management of Transient Tachypnoea of Newborn
Authors: Hussain Shaukat , Arslan Muhammad , Tayyab Muhammad , Yar Khan Isfand
Published: December 2020

Objective: To compare the outcome of salbutamol nebulization with controls (normal saline) in transient tachypnea of newborn. Methods: In this randomized controlled trial 284 (142 in each group) neonates were included with gestational age above 35 weeks of any gender. Study was conducted in Department of Pediatrics Holy Family Hospital Rawalpindi. Sampling technique was consecutive non probability sampling. Duration of study was 6 months. Sample size had been calculated using WHO calculator; Significance level 5%, Power of test 80%, Population mean 5.4, Test value of population mean 4.8, Standard Deviation 1.8. At admission complete blood picture, C-reactive protein and chest x-ray were done. Group-1 received salbutamol nebulization at a dose of 0.15mg / kg / dose for 10 minutes in 2ml normal saline QID while Group-2 received only normal saline nebulization 2ml QID in 24 hours. Double blinding was ensured and in case of any side effects of salbutamol (tachycardia, arrhythmias and hypoglycemia) treatment was stopped immediately and managed accordingly. Results: In this study, comparison of outcome of inhaled salbutamol with controls in transient tachypnea of newborn shows that respiratory rate per minute was 50.15+2.34 in Group-1 and 64.92+2.70 in Group-2, p value was 0.0001, heart rate per minute in Group-1 was recorded as 120.08+2.36 and 134.79+3.27 in Group- 2, p value was 0.0001, oxygen saturation(%) was 97.27+0.92 in Group-1 and 83.28+1.81 in Group-2, p value was 0.0001, duration of oxygen therapy(hours) was recorded as 15.49+1.84 in Group-1 and 27.78+5.57 in Group-2, value of p was 0.0001, duration of hospitalization(days) was recorded as 2.03+0.45 in Group-1 and 5.07+0.72 in Group-2 while value of P was 0.0001 Conclusion: Salbutamol Nebulization is more effective than normal saline in TTN. Key Words: Transient Tachypnea of newborn, management, inhaled salbutamol, outcome.
Implementasi Pembelajaran Tajwid dan Ketrampilan Membaca Al-Qur’an dalam Materi Al-Qur’an Hadist
Authors: Khamid Abdul , Prasmanita Dea , Munawaroh Rif’ah , Zamroni Ahmad , Nasitoh One Emi
Published: December 2020

This research is an attempt to implement recitation and reading skills of the Qur'an in the material of the Qur'an in class VII students at Al Manar Bener Tengaran MTs. In a teaching and learning activities it is not enough just to transfer knowledge and lecture only. As a teacher must have the skills and methods of learning that are fun so that learning can be achieved effectively and efficiently. The main questions to be answered through this research are (1) How is the implementation of recitation and reading skills of the Qur'an in learning the Qur'an ' an Hadith of grade VII students at MTs Al Manar Bener Tengaran ?, and (2) What are the Obstacles and Solutions in the implementation of recitation and reading skills in the Qur'an in learning the Qur'an Hadith of grade VII students at MTs Al Manar Bener Tengaran ?. To answer these questions, this research uses a qualitative approach by sharing the stages in its research. Based on literature review and research results in the field, the research can conclude that the results of research on the implementation of recitation and reading skills of the Qur'an in learning the Qur'an Hadith VII grade students at MTs Al Manar Bener Tengaran in planning, implementing, evaluating as well as obstacles and solutions in the learning process in accordance with the material taught namely recitation and the skills in reading the Qur'an.

Keywords: Tajwid Learning, Reading Skill of Al Qur]an
Sistem Zonasi Sebagai Solusi Bagi Orang Tua untuk Mendapatkan Pendidikan Anak Yang Bermutu Di Kota Kupang
Authors: Datuk Amirulah
Published: December 2020

Pendidikan adalah sesuatu yang dinamis, kedininamisasian itu membutuhkan agenda-agenda yang matang dalam menghadapi setiap perubahan yang akan datang. Topik permasalahan yang menjadi kajian dalam penelitian ini dikarenakan  setiap awal-awal tahun ajaran baru pemerimaan peserta didik baru (PPDB) sering dijumpai perdebatan, pro dan kontra dari orang tua terkait sistem zonasi. Penerapan sistem zonasi sebagai solusi bagi masyarakat menegah ke bawah sebagai konsesus dalam dunia pendidikan untuk mendapat pendidikan yang bermutu. Tujuan penelitian ini adalah bagaimana melihat peran pemerintah dengan segala bentuk otoritas kekuasannya hadir untuk memenuhi hak setiap warga negara dalam memperoleh layanan pendidikan guna meningkatkan kualitas hidup bangsa Indonesia. Metode Penelitian ini, peneliti menggunakan metode penelitian deskriptif dengan pendekatan penelitian kualitatif yang berlandaskan pada filsafat postpositivisme. Temuan dasar dalam kajian penulis soal analisis kebijakan sistem zonasi masih terdapat kesenjangan anatara negeri maupun swasta. Kurang sinergi pemerintah pusat dan daerah dalam menyiapkan tenaga pendidik yang professional yang tersebar di sekolah-sekolah yang ada di Kota Kupang, penyedian fasilitas pembelajaran dan ruang bermain di sekolah yang belum memadahi, serta proses pelayanan dalam dunia pendidikan harus dipermudah.

Keywords: Sistem Zonasi, Mutu Pendidikan, PPDB Sistem Zonasi
Meningkatkan Hasil Belajar Siswa pada Materi Transformasi Melalui Media Geogebra Kelas IX di SMP N 2 Banjit Way Kanan
Authors: Yunita Sri
Published: December 2020

Artikel ini bertujuan untuk mengaktifkan siswa dalam pembelajaran matematika dan meningkatkan hasil belajar siswa pada materi transformasi dengan menggunakan media geogebra  kelas IX di SMP Negeri 2 Banjit.  Metode penelitian yang digunakan adalah Penelitian Tindakan Kelas (PTK) yang terdiri dari empat tahapan, yaitu 1) perencanaan, 2) pelaksanaan, 3) observasi dan 4) refleksi. Penelitian ini dilaksanakan di SMP Negeri 2 Banjit. Subjek dalam penelitian ini adalah siswa kelas IXC yang berjumlah 27 orang. Penelitian ini dilaksanakan selama dua kali tindakan (siklus). Teknik pengumpulan data melalui wawancaara, angket,observasi dan tes hasil belajar.  Dari hasil penelitian menunjukan adanya peningkatan hasil belajar siswa pada materi transformasi melalui penggunaan media Geogebra. Pada siklus I, perolehan ketuntasan belajar klasikal sebesar 63% dan pada  siklus II menjadi 85%. Dengan peningkatan dari siklus I ke II sebesar  22%. Sedang untuk rata-rata pada siklus I sebesar 68,8 pada siklus II  sebesar 76,3 dengan peningkatan nilai rata-rata dari siklus I ke II sebesar 7,5. Aktivitas siswa dalam pembelajaran pada siklus I 70% dan siklus II menjadi 81%, meningkat 11%. Berdasarkan hasil pelaksanaan tindakan yang mengalami peningkatan setiap pelaksanaan siklus, maka dapat disimpulkan bahwa hasil belajar siswa meningkat pada materi transformasi melalui media geogebra  Kelas IXC di SMP Negeri 2 Banjit Way Kanan tahun pelajaran 2019/2020.

Kata Kunci: Media Geogebra, Materi Transformasi, Hasil Belajar
Peningkatan Kemampuan Menulis Puisi dengan Model Pembelajaran Telisik (Tentukan, Analisis, Tampilkan)
Authors: Wicaksono Helmi , Tabrani Akhmad
Published: December 2020

The aim of this article was to improve the ability in writing poetry through model of Telisik (Tentukan, Analisis, Tampilkan). The research method was Classroom Action Research (CAR) which consisted of four stages, namely 1) planning, 2) implementation, 3) observation and 4) reflection. The subjects in this study were 18 first semester students of language and literature study program at Universitas Islam Malang. This research was conducted during two actions (cycles). Data collection techniques was interviews, questionnaires, observation and test results. From the results of the study showed that there was increasingthe ability to write poetry with the Telisik model. Student mastery learning increased from 39% up to 66%. The implementation of the second cycle showed success. A significant increase was also seen from the results of the second cycle. The level of completeness of students reached 88%. Learning model of Telisik (Tentukan, Analisis, Tampilkan) which is supported by effective media and teacher attention, was an important factor supporting the success of learning activities.

Keywords: Telisik (Tentukan, Analisis, Tampilkan), Learning Model, Increasing Writing Poetry
Supervisi Korektif untuk Menemukan Kekurangan – Kekurangan Guru Kelas dalam Malaksanakan Pembelajaran di SD Negeri 173105 Tarutung
Authors: Tampubolon Junikaya
Published: December 2020

The purpose of this article was to find the shortcomings of teachers’ class in carrying out learning State of Elementary School (SDN) 173105 Tarutung, Tarutung District. This research was a qualitative field study with descriptive approach. The target of this research was the the teachers’ class at SDN 173105 Tarutung. The data obtained in the form of formative test results, observation sheets of teaching and learning activities. The results of analysis found that in the initial cycle of research: the teacher still had shortcomings in carrying out learning. Some of these errors such as old lesson plans were still used by the teachers, learning that is not in accordance with planning, lack of resources and learning media, and conventional learning models. Furthermore, the researchers conducted guidance in an effort to overcome teacher shortcomings. In the final cycle the teacher shortages overcome very well. From this research, it was concluded that the implementation of collaborative supervision was very effective in finding teacher shortcomings in learning, hence improvements can be made (revised). Keywords: Corrective Supervision, Teacher Quality, Learning Activity
Implementasi Kurikulum Muatan Lokal Tahfidz Qur’an di SMA Istiqomah Bandung
Authors: M Muhammad Mirwan , Sofia Wida Nafila
Published: December 2020

educational activities. The local content curriculum includes curricular activities (activities related to the curriculum) which are used to develop student competencies that are tailored to regional characteristics and potential, including regional excellence. The aim of this article was to anlyze how the implementation of local content curriculum Tahfidz Qur'an at Senior High School  Istiqomah Bandung, to analyze the obstacles factors in the implementation of the local content curriculum of Tahfidz Qur'an, and to analyze how to face the problem in implementing local content curriculum Tahfidz Qur'an. The researchers used qualitative methods. Using Interview, observation, and documentation data was collected. The result showed that the implementation of local content curriculum at Senior High School Istiqomah Bandung used three methods, namely sabak, sabki, manzil. The evaluation of Tahfidz Qur'an activities was done regularly either daily, weekly, monthly, and in each semester by submitting the real data about assessments and program activities as well as student memorizing developments. In implementing Tahfidz Qur'an, there were several factor obstacles, namely: laziness and lack of enthusiasm in memorizing, lack of concentration and weakness in memorizing. In responding to the existing obstacles, the teacher or ustadz has taken several actions, include providing motivation to keep the spirit of memorizing the Qur'an, giving rewards or gifts, extracurricular Tahfidz Qur'an, and conducting evaluations.

Keywords: Local Content Curriculum, Tahfidz Qur’an, Educational Curriculum
Manajemen Pemanfaatan Sarana Dan Prasarana Pembelajaran
Authors: Herawati Sri , Arafat Yasir , Puspita Yenni
Published: December 2020

This study aimed at finding out management of the use of facilities and infrastructure in learning, obstacles and the solutions in Elementary School of 25 Betung. This research used a qualitative method. Subject in this study was the principal, teachers, infrastructure coordinator, school committee and supervisor. Technique of collecting data employed observation, interview and documentation. The technique of data validity used triangulation of methods and sources. Data analysis techniques used interactive model. The management of learning facilities and infrastructure is utilized through planning, implementing and controlling facilities and infrastructure. The obstacles are the storage area requires funds for expansion and repair, and a lack of administrative personnel, especially for the management of facilities and infrastructure. Solving budget problems by optimizing the limited personnel is to be more observant in determining the priority scale according to the existing budget, then involving existing personnel in formal courses or training.

Keywords: Management Facility, Management Infrastructure, Learning
Applying Hassle Lines Strategy to Improve the Students’ Speaking Skill
Authors: Kholid Mohammad Ridho , Noviyandi Andi
Published: December 2020

This article was to improve the students’ speaking skill at the eleventh grade at sate senior high school 10 Bandar Lampung through Hassle Lines Strategy. Classroom Action Research was used in this method, with the sample of twenty six students that consist of 8 male and 18 female.In cycle of Hassle Lines Strategy, 81% the students prepare the conversation actively, 92% students practice orally, 65% students can mention the body language, and 85% students share to the teacher. From questionnaire, the researcher got the data Hassle Lines Strategy implementing was 91% of student agree and 9% of student disagree, the positive respond accomplished. From the test, 81% of students passed the KKM in post Hassle Lines Strategy implementing.

Keywords: Hassle Lines Strategy, Speaking Skills, Learning Strategy
The Impact of “Product Planning and Design” and “Sales Ability” on Financial Performance by Taiwan-Listed Construction Companies: an Intervening Variable of Macro Environmental Factors
Authors: Tsai Kuo Wei , Chou Huei Jeng , Tseng Hsing Chau
Published: December 2020

With the rapid change of the macro environmental factors, the operation and organization of Taiwan's overall construction industry has also been greatly affected. In addition, looking back on the past the companies often encounter the phenomenon of Real Estate Bermuda Effect. Are the key factors for the successful operation of Taiwan's publicly-listed construction companies-good Sales Ability (SA) and Product Planning and Design (PD) can better respond to the above-mentioned adverse environmental changes? This study mainly aims to verify the impact of Taiwan's publicly-listed construction company's Sales ability (SA) and Product planning and design (PD) on Financial performance (FP) by using Macro environmental Factors (ME) as an interference variable. In this study, the population was sampled by Purposive Sampling and the directors or above as the research interview object. In addition, this study used the database of Taiwan Economic Journal (TEJ) to obtain the company's EPS information, and Linear Structural Equation Modeling (SEM) was used to verify the fitting effect of the Whole model, Structural model and Measurement model.The results show that Taiwan's publicly-listed construction company’s Sales Ability (SA) and Product Planning and Design (PD) , both of which have positive effects on Financial Performance (FP) respectfully, but not significant; however, adding the Intervening variable of Macro Environmental Factors (ME), both has a positive and significant interactive effect on Financial Performance (FP). This means that Macro environmental factors (ME) plays a very important positive impact role in promoting Financial Performance (FP), but Financial Performance (FP) is also affected by the aggregation of other factors such as both of Sales Ability (SA) and Product Planning and Design (PD) which were combined or to be considered at the same time.This finding can be used at least as a reference for the business decision makers of Taiwan publicly-listed construction companies as sustainable business management and development.
Sustainability Analysis in Agricultural Policies in Benin
Authors: Bio N’Goye Clotilde Gnon , Egah Janvier , Baco Mohamed Nasser
Published: December 2020

Agriculture in Benin is confronted with new problems which require more sustainable and resilient strategies for its development. The question of its sustainability is thus at the center of agricultural policies. This study analyzed how issues of sustainability of farming systems are taken into account in argicultural policies frameworks.  An analysis and review of the four main agricultural policy documents adopted over the last thirty years being completed to assess the measures taken to ensure the sustainability of farms. It emerges that agricultural policies do not integrate into their framework the pillars on which the development of sustainable agriculture is based. However, in their implementation, they have been strongly oriented towards the pursuit of economic and social objectives, which is reflected in the will to improve the productivity and attractiveness of the agricultural sector. However, the lack of long-term strategies, the lack of coherence between policies and the dependence on the international political context has not allowed interventions in the agricultural sector to be placed in a sustainable perspective.
The Determinants of Risk-Sharing Strategies of Food-Retailers: A Study on Chittagong, Bangladesh
Authors: Sagar Awlad Hosen , Siddik Md Abu Bakkar , Hasan Rubayet
Published: December 2020

Food-retailers have access to various risk management strategies to manage the risks in food processing and trading. Risk-sharing is a powerful instrument amongst risk management strategies. It comprises a negotiation of risk allocation between at least two agents to reduce risk and to increase expected utility. The objective of the study is to identify the factors that affect the selection of risk-sharing strategies of food-retailers. In this regard, the study explains risk-sharing instruments from three perspectives: risk reduction; risk mitigation; and risk coping strategies. Food-retailers choose these risk-sharing strategies according to their preference. We link a theoretical understanding of the existing risk-sharing strategies with an empirical model. For quantitative analysis, primary data encompassing 24 variables is sampled from 109 randomly selected food-retailers from and around the city of Chittagong, Bangladesh. This study uses a multiple regression model to identify the significant factors in selecting risk-sharing strategies. The results infer that Family Employment, Hired Employment, Value Chain Challenges, Institutional Challenges, Societal Challenges, Risk Attitudes on Marketing and Promotion, Risk Attitudes on Innovation, Risk Attitudes on Business-in-General, Gender and Expectation for Succession, have a significant effect on the selection of risk-sharing strategies. The analysis is performed on SPSS (version-26). This study covers only off-business risk-sharing instruments of food-retailing. Consequently, this result is irrespective of on-business risk management strategies.
Selectieve betalingen in het zicht van (mogelijke) insolventie – ruim baan voor de bestuurder?
Authors: Linskens L.M. , van Thiel S.C.M.
Published: December 2020

Selectieve betalingen in het zicht van (mogelijke) insolventie – ruim baan voor de bestuurder?

Een bestuurder van een bv of nv wordt in tijden van financiële krapte veel vrijheid gegund om zelf te bepalen welke schuldeisers hij wel en welke hij (nog) niet voldoet. Deze vrijheid wordt slechts begrensd door de wet (pauliana) en door de jurisprudentie omtrent selectieve betalingen. Op grond van die jurisprudentie is een bestuurder die in een situatie waarin er blijvend meer schulden dan middelen zijn gelieerde crediteuren boven andere crediteuren behandelt, in beginsel persoonlijk aansprakelijk jegens die andere crediteuren. In de literatuur is bepleit dat deze ‘in beginsel’-regel zou moeten gelden voor alle betalingen die een bestuurder verricht nadat het faillissement van de vennootschap onvermijdelijk is geworden. Uit het arrest Ingwersen q.q./Kromme Leek c.s., dat eerder dit jaar werd gewezen, volgt dat de Hoge Raad hier echter geen aanleiding voor zag. In deze bijdrage staat de vraag centraal of dit betekent dat de Hoge Raad de bestuurder zelfs in een dergelijke situatie nog ruim baan geeft om zijn eigen keuzes te maken. Aan het einde wordt bezien hoe de lagere jurisprudentie tot nu toe hierop heeft gereageerd.
Clinical and Economic Rationale for the Early use of SGLT2 Inhibitors in Patients with Type 2 Diabetes
Authors: Mannucci Edoardo , Mangia Pier Paolo , Pradelli Lorenzo
Published: December 2020

Type 2 diabetes (T2D) is a chronic disease associated with a high epidemiological and economic burden. It is associated with a high risk of developing both macrovascular and microvascular complications and cardiovascular diseases represent the main cause of mortality and morbidity in T2D patients. The economic impact of diabetes is primarily due to the cost and duration of treatment and secondary complications of diabetes and associated costs. Sodium-glucose co-transporter-2 (SGLT2) inhibitors are an effective therapy for providing a long-term improvement of glucose control, thus contributing to the long-term prevention of diabetic (particularly microvascular) complications. Furthermore, SGLT-2 inhibitors seem to lead to significant reductions in hospital admissions due to heart failure and progression of renal disease, regardless of baseline atherosclerotic risk category or history of heart failure. Evidence from randomized controlled trials, observational and pharmacoeconomic studies suggest that SGLT2 inhibitors should be considered not only in patients with established cardiovascular disease and incipient nephropathy but also in earlier stages of T2D in order to prevent the first onset of cardiovascular and renal complications and contain the cost of illness.
Nonlinear feature extraction and chaos analysis of flow field
Authors: Xu Zi-Fei , Miao Wei-Pao , Li Chun , Jin Jiang-Tao , Li Shu-Jun ,   Energy and Power Engineering Institute, University of Shanghai for Science and Technology, Shanghai 200093, China,   Shanghai Key Laboratory of Multiphase Flow and Heat Transfer for Power Engineering, Shanghai 200093, China
Published: December 2020

A novel signal processing method named adaptive variational mode decomposition with the fractal (AFVMD), which is based on variational mode decomposition and fractal theory, is proposed in this paper for solving a problem that it is easy to misjudge the working conditions of the centrifugal compressor. The measured signal of a compressor is unstable, so a traditional method is used to analyze the nonlinear phenomenon of the stall flutter. Owing to the fact that the robustness of VMD method is strong and its combination with the fractal dimension can accurately describe self-similarity and fractal characteristics of a measured signal, the proposed AFVMD method can not only achieve noise reduction, but also extract nonlinear feature from a complex signal. Taking the dynamic pressure data of the impeller during the instability of a centrifugal compressor as an object to verify the effectiveness and superiority of the proposed AFVMD method, the results are obtained as follows. Firstly, compared with the wavelet noise reduction method, the proposed AFVMD method has both noise reduction and feature extraction functions, and the compressor pressure pulsation spectrum has more significant stall characteristics. Secondly, none of the traditional nonlinear analysis methods can reflect the stall process, so the chaotic phase space attractor is used to visualize the flow field changes. Due to the reasonable choice of the delay time and the embedding dimension, the physical information originally mixed in the signal is separated, so that the attractor phase diagram method has a better process of judging the flow stall than the frequency spectrum method. The results show that the proposed AFVMD method can judge the compressor about to enter into the deep surge earlier. Thirdly, In order to quantify the superiority of the proposed method, if the process of surging and the occurrence of deep wheezing can be predicted in advance, the largest Lyapunov exponent is used as an evaluation index. The above results show that the largest Lyapunov exponent of the proposed AFVMD is smallest for illustrating that the signal has more accurate flow field nonlinear information, which improves the predictability of the signal.
Gas-liquid two-phase flow of liquid film breaking process under shock wave
Authors: Peng Xu , Li Bin , Wang Shun-Yao , Rao Guo-Ning , Chen Wang-Hua ,   School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China,   School of Mechanical and Electrical Engineering, Jinling Institute of Technology, Nanjing 211169, China
Published: December 2020

The gas-liquid two-phase flow of liquid dispersing and breaking under the action of shock wave includes complex physical phenomena, such as turbulent mixing of gas-liquid two-phase, instability and breakage of liquid interface, and formation of internal cavity structure after atomization. In order to investigate the shock-wave-caused breaking process of the liquid film, a three-dimensional numerical simulation of the gas-liquid two-phase flow process is performed by using the computational fluid dynamics method. In the simulation, the Mach number of shock wave is 1.5 and the thickness of liquid film is 2 mm. The finite volume method is used to solve the three-dimensional Navier-Stokes equation. The volume of fluid model is applied to the gas-liquid two-phase flow. The k-ε double equation turbulence model is selected for the turbulence calculation. The evolution process of the wave system structure of the shock wave and the deformation, breakage and atomization characteristics of the liquid film are obtained, and compared with the experimental results. The results show that the incidence, reflection, and transmission phenomena occur during the interaction between the shock wave and the liquid film, and the intensity of the transmitted shock wave and the liquid surface tension have an important effect on the breaking process of the liquid film. The transmitted shock wave affects the shape of the broken cloud cluster on the left of the liquid film, while the incident shock wave and reflected shock wave affect the shape of the broken cloud cluster on the right side of the liquid film. The volume of the atomized cloud formed in the breaking process of the liquid film increases rapidly, first reaching 6.7 dm3 within 2.5 ms, then keeping stable basically. After the shock wave exits from the tube, a long narrow jet is formed. The maximum velocity reaches 519 m/s and appears in the interior of the jet, and then decreases continuously. Under the action of the jet, an expanding three-dimensional cavity structure is formed inside the atomizing cloud, and an annular vortex with negative pressure in the core area occurs in the cavity structure. Finally, the annular vortex continuously entrains the surrounding fluid in the process of forward movement, the strength of the vortex decreases and gradually dissipates in the space. This work is conducive to further understanding the interaction process of gas-liquid two-phase flow.
Observationer om personuppgiftsskydd i offentlig förvaltning
Authors: Hautamäki Tarja
Published: December 2020

Ingen
Modernare byggregler
Authors: Jääskeläinen Lauri
Published: December 2020

Sveriges regering beslutade i februari 2017 att tillsätta en kommitté för att genomföra en genomgripande översyn av Boverkets byggregler, kontrollen av byggandet med mera. Kommitténs över sex hundra sidors slutbetänkande blev färdigt i december 2019.
En kort, en lang: om høringsfristers udsving og rammerne for det lovforberedende arbejde
Authors: Morten Jarlbæk Morten Jarlbæk
Published: December 2020

Når danske ministerier forbereder nye regler, gør de i stor stil brug af høringssvar, hvor de beder eksperter og interessenter om at forholde sit til et udkast til f.eks. ny lovgivning. Dette sker både for at sikre den løbende dialog mellem beslutningstagerne og det omgivende samfund og for at sikre kvaliteten af de regler, der vedtages. Høringsinstitutionen bliver på den måde en kilde til både input- og output-legitimitet. Det er dog en forudsætning for, at dette system kan virke efter hensigten, at høringsfristerne er tilstrækkelig lange. I denne analyse af samtlige høringer tilgængelige via Høringsportalen – den officielle kanal for høringer i Danmark – vises det, at fristerne med tiden er blevet mærkbart længere. I nyere tid kan vi dog se en pludselig og bemærkelsesværdig bevægelse mod kortere frister. Dette gælder både generelt og på Skatteministeriets område, som undersøges nærmere. Denne udvikling diskuteres i artiklen, og der peges især på, at den politiske prioritering af høringsinstitutionen har afgørende betydning for systemet – og dermed også for høringsinstitutionens bidrag til det politiske systems samlede legitimitet.
Lovkrav og administrationsbyrder blandt frontpersonale – det retlige skøn i praksis.
Authors: Christensen Anders Bøggild , Frandsen Else Marie Dalgaard , Schaldemose Sisse
Published: December 2020

Artiklen skriver sig ind i et tema om omfanget af bureaukrati og ønsket om forenkling i den offentlige sektor, hvor der kan vise sig et spændingsfelt mellem krav til sagsbehandling og dokumentation over for tid til at udføre tilfredsstillende professionelt arbejde. I den forbindelse undersøges administrationen af 225-timersreglen for aktivitetsparate kontanthjælpsmodtagere i tre jobcentre i Danmark. Datamaterialet er 57 journaler og 12 interviews med frontmedarbejdere. Undersøgelsen belyser hvordan der arbejdes med konkrete vurderinger og dokumentation i forhold til 225-timersreglen, og hvordan det opleves som professionel at sidde med den opgave. Analysen af journalnotater viser, at der foretages en standardiseret og ret begrænset faglig argumentation og dokumentation i relation til det konkrete faglige skøn. Interviewanalysen afdækker endvidere, at dette forekommer som en logisk strukturel konsekvens for frontmedarbejdere, der skal prioritere at anvende sin tid mest hensigtsmæssigt for at løse en kompleks opgave. Hvis målet er forenkling kunne det derfor være relevant at overveje 225-timersreglen endnu en gang.
Forord: 100-års jubileum i krise
Authors: Johnsen Åge
Published: December 2020

Det Nordisk Administrative Forbund kunne i 2020 feiret 100-års jubileum siden første utgave av Nordisk Administrativt Tidsskrift i 1920.
Knowledge, Attitudes and Practices towards the Density of Aedes Larvae in a Tourist Destination in Bali
Authors: Purnama Sang Gede , Susanna Dewi , Kardiwinata Made Pasek , Purnama I. Gede Herry , Subrata I. Made
Published: December 2020

Introduction: The lack of information can affect the level of knowledge, attitudes, and practices for dengue control. The purpose of this study was to measure knowledge, attitudes, and practices associated with the larvae density of Aedes sp.

Study Design: This study used a cross-sectional design by sampling as many as 250 households. Data measurements were carried out quantitatively using questionnaires and direct observation. Results: The variable knowledge, attitudes, practices, family income, and door-to-door health promotion associated with Aedes larvae density. People who eradicated mosquito breeding sites were mothers (74.4%), draining mosquito breeding sites routinely once a week (43%). The media favored direct counseling (53%), television as much as (34%). The preferred electronic media was interactive interviews (78.8%). The Aedes sp entomology survey results were house index (HI): 31.2%, container index (CI): 20.4%, and breteau index (BI): 103.6%.

Conclusion: The knowledge, attitude, practice, family income, and door-to-door health promotion variables were associated with the density of Aedes larvae. Education programs in the community could increase awareness of controlling dengue vectors.
Effect of Time Factor on the Battery Voltage State of Charge from Foot Beats Piezoelectric System
Authors: Nworji Godwin Chukwunonyelum , Okpala Uche V. , Okereke Ngozi Agatha , Okoye Peter Uchenna
Published: December 2020

Aim: The study examined the effect of time on amount of voltage generated in a foot beat electricity generating system stored in a battery.

Study Design: A system made of piezoelectric materials was designed such that the foot beats of dancers on a platform would cause a mechanical deformation that would lead to conversion of mechanical energy due to pressure from the foot beats to electrical energy; and can be stored in a rechargeable lead acid battery for future use.

Place and Duration of Study: Awka Anambra State, Nigeria, between November 2018 and April 2020.

Methodology: A sheet of plywood measuring 300 mm x 300 mm x 3 mm thick was placed on a hard wooden board of 300 mm x 300 mm x 25 mm thick where twelve piezoelectric sensors were connected in series with foam spring inserted as separators and to aid in returning after deformation. As the dancers step on the platform, multimeter was used to take the voltage and current readings, while Lead acid rechargeable battery could be connected at the output point to store energy generated in the system and or Light Emitting Diodes (LED) and Universal Serial Bus (USB) outputs. A stop clock was also used to take the time.

Results: The study revealed that it would require 901 seconds for a 50kg dancer to increase a unit voltage state of charge in a battery. It also found that it would require 749 seconds for a 60 kg dancer; and 595 seconds for an 80kg dancer respectively to increase the same 1-unit voltage state of charge in a battery. The study showed that the voltage in the battery would continue to increase until the battery is fully charged at which point it is expected that there would no longer be any increase in charge in the battery irrespective of increase in the number of foot beats or time.

Conclusion: The result implies that the charge in battery caused by pressure from the foot beats is subject to the maximum voltage capacity of the battery in the system. Likewise, the amount of time and number of foot beats required to add a unit voltage state of charge in a battery in the system is subject to the applied pressure from the foot beats. In view of this, the study craves for popularisation of this technology through large scale research supported by government, corporate organisations or international organisations and institutions that will support new products development in the building and construction industry as it is the case in India and other developed countries.
Consumption of Comfortable Foods by Urban Adolescents in Different Socio-Economic Categories
Authors: Chhabra Isha , Kaur Harpreet , Jain Shruti
Published: December 2020

Comfortable foods are chemically processed and made from heavily refined ingredients and artificial additives. These foods are manufactured and distributed in ways that encourage consumption. This study focused on adolescents since they have greater access to comfortable foods, are more free and lesser concerned for their health. Fewer studies have been conducted on adolescents but in present scenario they are more inclined towards unhealthy eating behaviors. Therefore, the present study after careful considerations was attempted to assess the consumption of comfortable foods by urban adolescents in different socio-economic categories. Two hundred subjects in the age group of 16 to 18 years were purposely selected in equal number in the ratio of 1:1 of boys and girls. Findings revealed that majority belonged to high socioeconomic status whereas 52% boys and 44% girls belonged to low socioeconomic status. Respondents from the entire income category mostly consumed comfortable foods because it was either liked by them or they found it good in taste. Consumption of all the comfortable foods was found to be significantly (p≤0.05, p≤0.01) higher in adolescents who had high income and greater access of these food products.  Significant difference was observed in the mean values of consumption of comfortable foods by all the adolescents in different socioeconomic categories.
Some Size Biased Probability Models for Adult out Migration Pattern
Authors: Singh Brijesh P. , Singh Sandeep , Das Utpal Dhar , Singh Gunjan
Published: December 2020

In this paper an attempt has been made to inspect the distribution of the number of adult migrants from household through size biased probability models based on certain assumptions. Size Biased Poisson distribution compounded with various forms of Gamma distribution i.e. Gamma (1,θ) , Gamma (2,θ) and mixture of Gamma (1,θ) and Gamma (2,θ)  has been examined for some real data set of adult migration. The parameters of the proposed model have been estimated by method of maximum likelihood.  test indicates that the distributions proposed here are quite satisfactory to explain the pattern of adult out migration.
Pre Harvest Forecasting of Kharif Rice Yield Using Weather Parameters for Strategic Decision Making in Agriculture
Authors: Garde Y. A. , Thorat V. S. , Pisal R. R. , Shinde V. T.
Published: December 2020

In the recent year, pre harvest crop yield forecasting has been a topic of interest for producers, policy makers, government and agricultural related organizations. Pre harvest crop forecasting is important for national food security. Construction of appropriate yield forecast promotes the output of scenario analyses of crop production at a farm level, which enables suitable tactical and strategic decision making by the farmer. Indeed, considerable benefits apply when seasonal forecasting of crop performance is applied across the whole value chain in crop production. Timely and accurate yield forecast is essential for crop production, marketing, storage and transportation decisions as well as for managing the risk associated with these activities. In present manuscript efforts were made for development of pre harvest forecast models by using different statistical approaches viz. multiple linear regression (MLR), discriminant function analysis and ordinal logistic regression. The study utilized the crop yield data and corresponding weekly weather data of last 30 years (1985-2014). The model development was carried out at 35th and 36th SMW (Standard Meteorological Week) for getting forecast well in advance of actual harvesting of the field crop. The study revealed that method of discriminant function analysis gave best pre harvest forecast as compare to remaining developed models. It was observed high value of Adj. R2= 0.94, low value of RMSE= 164.24 and MAPE= 5.30. The model can be used in different crop for reliable and dependable forecast and these forecasts have significant value in agricultural planning and policy making.
Effect of Institutional and Farmer Based Climate Change Adaptation Measures on Crop Production in Mavuria Ward, Mbeere South Sub-county, Embu County, Kenya
Authors: Nyaga Samuel K. , Gathungu Geofrey K. , Nyaga Justin , Njeru Jafford R.
Published: December 2020

Africa is under pressure from climate stresses and is highly vulnerable to the impacts of climate change. In Kenya, agriculture is the backbone of the economy making it an important contributor to food security of rural households. Currently crop productivity is being affected by continued climate variations and decline in soil fertility. Adaptation to climate change requires to be given high and urgent priority for sustainable crop production. A study was conducted in Mavuria ward, Mbeere South Sub-County, Embu County to evaluate the effects of climate change adaptation on crop production. The study used both descriptive and experimental research designs. The primary data on adaptation measures was collected from farmers and institutions using questionnaires. In the data analysis, descriptive statistics were used to organize the climate data and that of the respondents into frequencies. Further, a Pearson correlation test was done to determine the relationship between farmer and institutional based mechanisms on adaptation to climate change at α=0.05. The main adaptation mechanisms identified were soil fertility improvement, soil and water conservation, early planting, pest and disease control, provision of certified seeds, and awareness creation. In view of these findings, the study recommends continuous implementation of these measures that can help strengthen farmers and institutional adaptation mechanisms towards climate change for improved crop production.
Activities Used in Improving College Retention and Graduation: A Project Focused on Internships, Faculty-Mentoring and Other Career Development Activities
Authors: Robinson Joel , Simplicio Mariah , Dole Jenna , Denman Kristine , Castillo Elsa , Khraishi Tariq , White Graham
Published: December 2020

The University of New Mexico (UNM) embarked on a project funded by the National Science Foundation (NSF) to engage in activities that are believed to support retention and graduation of STEM students (specifically engineering and computer science students). The project focused on the following activities: internships, faculty-mentoring and other career development activities such as conferences, interacting with industry, financial aid info, resume building workshops, interview skills workshops. The project focused on early career students (mostly sophomores and some freshmen). The methods of this research involved data collection and analysis, surveys, bivariate descriptive statistics with statistical significance, and multivariate logistic regression analysis. The authors have found evidence supporting that such activities have played a positive role in student’s continued retention, eventual graduation and overall self-confidence in their engineering/computing persona going forward. Other higher education institutions are encouraged to pursue similar activities.
Effects of Berberine on Bloog Glucose, Glycated Hemoglobin A1, Serum Insulin, C–Peptide, Insulin Resistance and β– Cell Physiology
Authors: Khoharo Haji Khan , Shaikh Din Muhammad , Nizamani Ghulam Shah , Shaikh Tariq Zaffar , Ujjan Ikramuddin , Uqaili Arslan Ahmed
Published: December 2020

Objective: Determine effects of berberine (BBR) on bloog glucose, glycated hemoglobin A1, serum insulin, C – peptide, insulin resistance and β– cell physiology.

Study Design: Experimental study

Place and Duration: Department of Physiology Isra University and Animal house of Sindh Agriculture University, Tando Jam from August 2019 to February 2020.

Methodology: A sample of 100 adult Wistar male rats was selected according to criteria of study and divided into 5 groups through random technique. Group A – negative controls (N/S 0.9%), Group B – positive control (diabetic rats – Alloxan 120 mg/kg) (i.p), Group C – E; Diabetic rat + BBR (50, 100 and 200 mg/kg) respectively. Blood samples were collected from retro-orbital venous plexus by capillary tube. Sera were separated at 3000 rpm (15 minutes). Insulin resistance (HOMA-IR) and β – cell secretory activity (HOMA-β) were calculated by mathematical formula. Statistical analysis was performed on SPSS version 21.0 (IBM, incorporation, USA) at 95% CI (P≤ 0.05).

Results: The present study noted significant improvement of fasting and random blood glucose, glycated HbA1, serum insulin and C –peptide, insulin resistance (HOMA-IR) and β – cell physiology.

Conclusion: Berberine (BBR) ameliorates the bloog glucose, glycated hemoglobin A1, serum insulin, c – peptide, insulin resistance and β– cell physiology.