bluuebunny/crossref_metadata_2025 huggingface dataset:
EVALUASI KUALITAS PELAYANAN KESEHATAN DASAR TERHADAP KEPUASAN PASIEN DI PUSKESMAS KOTA BUKITTINGGI TAHUN 2020
Authors: Angelia Sriyus Yus , Utami Sari Asih , Yanti Mezza , Willys Ratna , Sumihardi Sumihardi
Published: December 2020

This research was based on the results of the BPJS assessment of the Guguk Panjang Health Center where the impression value of the Guguk Panjang Health Center was 66.25%. The research method used is a quantitative approach. The data collection technique used was questionnaire distribution. Data analysis used Outer Loading and Inner Loading analysis, while data processing was assisted by using SemPLS software. Based on the results of the study, the authors concluded that the quality of basic health services has a relationship with patient satisfaction. There is a relationship between the dimensions of service quality simultaneously. From the research results, it was obtained that the dimension of the service quality variable that had the greatest impact on patient satisfaction was the dimension of Assurance (Keteramplan) with an Original Sample value of 0.22. (p. Value 0.50%). Whereas for the officer reliability dimension there is no relationship with patient satisfaction with a hypothesis value of 0.449 0.05 as well as the dimensions of responsiveness and information provision there is no relationship with patient satisfaction with a value of 0.535 0.04. Thus, patient satisfaction with services at the Puskesmas Kota Bukittinggi is prioritized for improvement in the dimensions of reliability and responsiveness of officers.Penelitian ini dilatar belakangi dari hasil penilaian BPJS  terhadap Puskesmas Guguk Panjang dimana Nilai Kesan terhadap Puskesmas Guguk Panjang 66,25%. Metode penelitian yang digunakan adalah dengan pendekatan kuantitatif. Teknik pengumpulan data yang digunakan adalah penyebaran kuesioner. Analisis data menggunakan Analisis Outer Loading dan Inner Loading, sedangkan pengolahan data dibantu dengan menggunakan software SemPLS. Berdasarkan hasil penelitian, penulis membuat kesimpulan bahwa kualitas pelayanan kesehatan dasar ada hubungan dengan kepuasan pasien. Ada hubungan antara dimensi-dimensi kualitas pelayanan secara simultan. Dari hasil penelitian diperoleh data bahwa dimensi variabel kualitas pelayanan yang paling besar terhadap kepuasan pasien adalah dimensi Assurance (Keteramplan) dengan nilai Original Sampel 0, 222 yang kedua adalah kenyamanan lingkungan dengan hasil hipotesa (p value 0,017), sedangkan dimensi yang kecil adalah dimensi Empathy (p. Value 0.50%). Sedangkan untuk dimensi Kehandalan Petugas tidak ada hubungan dengan Kepuasan Pasien dengan nilai hipotesa 0,449 0,05 begitu juga dengan dimensi Daya tanggap dan pemberian informasi tidak ada hubungan dengan kepuasan pasien dengan nilai 0,535 0,04. Dengan demikian kepuasan pasien terhadap pelayanan di Puskesmas Kota Bukittinggi diutamakan peningkatan pada dimensi Kehandalan dan Daya Tanggap Petugas.
KOMUNIKASI DIGITAL PADA PEMBELAJARAN SECARA DARING DIMASA PANDEMI COVID-19
Authors: Chrisnatalia Sandra Grace , Rahadi Dedi Rianto
Published: December 2020

The COVID-19 pandemic or Corona Virus Disease-19 has directly disrupted the conventional learning process around the world, especially in Indonesia. As a result of this pandemic, a solution is needed to answer the problems that arise as a result of learning that carried out online. It is hoped that the communication that exists between students and lecturers can still be carried out even though the implementation must be done through digital media and means. This study aims to determine what obstacles students experience when communication must be done digitally and what students can do so that communication and learning can run properly and smoothly as it should. Informants will fill out open-ended questions related to this research through an online form. The result showed that the obstacles commonly experienced by students were lack of understanding of the material, inadequate networks, difficulty doing assignments, too fast task deadlines and difficulty buying quotas. And, the efforts made to overcome the obstacles are discussed with friends, studying independently, consulting with lecturers and finding a place with a good internet connections. Pandemi COVID-19 atau Corona Virus Disease-19 secara langsung telah mengganggu proses pembelajaran secara konvensional diseluruh dunia khususnya di Indonesia. Akibat dari adanya pandemi ini, maka diperlukan solusi untuk menjawab permasalahan yang timbul akibat dari pembelajaran yang dilakukan secara daring. Diharapkan komunikasi yang terjalin antara mahasiswa dengan dosen pengajar bisa tetap terlaksana walaupun pelaksanaannya harus dilakukan melalui media dan sarana digital. Penelitian ini bertujuan untuk mengetahui kendala apa saja yang dialami mahasiswa pada saat komunikasi harus dilakukan secara digital serta hal apa saja yang bisa dilakukan oleh mahasiswa agar komunikasi dan pembelajaran bisa berjalan dengan baik dan lancar sebagaimana mestinya. Informan akan mengisi pertanyaan terbuka terkait penelitian ini melalui formulir daring. Hasil penelitian menunjukan bahwa kendala yang biasa dialami oleh mahasiswa ialah kurang memahami materi, jaringan yang kurang memadai, sulit mengerjakan tugas, deadline tugas yang terlalu cepat dan kesulitan membeli kuota. Dan, upaya yang dilakukan untuk mengatasi kendala ialah berdiskusi dengan teman, belajar mandiri, konsultasi dengan dosen dan mencari tempat dengan koneksi internet yang bagus.
HUBUNGAN PENDIDIKAN, SIKAP, DAN DUKUNGAN SUAMI DENGAN KEBERHASILAN PEMBERIAN ASI EKSLUSIF DI KOTA BUKITTINGGI
Authors: Gusrinawati Gusrinawati , Hardisman Hardisman
Published: December 2020

Indonesia's health development plan according to the National Medium Development Plan (RPJMN) for 2015-2019 states that the target for infant mortality is 24 per 1,000 live births while by 2018 the infant mortality rate in Indonesia is still high at 31 per 1,000 births. There are various causes of infant death, one of which is an infectious disease. Provision of breast milk (ASI) is one thing that can prevent infants from infectious diseases. Exclusive breastfeeding for infants up to 6 months of age is very important. however, exclusive ASI coverage in Bukittinggi city has decreased from year to year. The research method in this study is a mixture / combination (mixed methods). Data collection methods in quantitative research using questionnaires while qualitative research uses in-depth interviews (indepth interview) to find problems more openly and make observations and study documents. It is expected that the baby's mother should be more active in seeking information about Exclusive ASI and the benefits of Exclusive ASI so that awareness arises to make every effort to continue to provide Exclusive ASI to the child even if the mother is working or outside the home.Rencana pembangunan kesehatan Indonesia menurut Rencana Pembangunan Menengah Nasional (RPJMN) tahun 2015-2019 disebutkan bahwa target untuk angka kematian bayi adalah 24 per 1.000 kelahiran hidup sedangkan samapai tahun 2018 angka kematian bayi di Indonesia masih tinggi yaitu 31 per 1.000 kelahiran. Ada berbagai macam penyebab kematian bayi, salah satu diantaranya adalah penyakit infeksi. Pemberian air susu ibu (ASI) merupakan salah satu hal yang dapat mencegah bayi dari penyakit infeksi Pemberian asi ekslusif pada bayi hingga usia 6 bulan merupakan hal yang sangat penting. akan tetapi cakupan asi ekslusif di kota bukittinggi dari tahun ke tahun mengalami penurunan. Metode penelitian dalam penelitian ini adalah campuran/kombinasi (mixed methods). Metode pengumpulan data pada penelitian kuantitatif dengan menggunakan kuesioner sedangkan penelitian kualitatif menggunakan metode wawancara mendalam (indepth interview) agar ditemukan permasalahan secara lebih terbuka serta melakukan observasi dan studi dokumen. Diharapkan Ibu bayi hendaknya lebih aktif mencari informasi tentang ASI Eksklusif dan manfaat dari ASI Eksklusif sehingga timbul kesadaran untuk berupaya semaksimal mungkin untuk tetap memberikan ASI Ekslusif kepada anak walaupun ibu tersebut bekerja atau berada di luar rumah.
Influence of Contract Administration on Performance of Parastatals in Kenya
Authors: Kimeo Josphat Mutua , Achuora Dr. John
Published: December 2020

Purpose: The study helped to unearth the influence of contract administration on performance of parastatals in Kenya.Methodology: This study employed descriptive research design. The study reviewed both theoretical and empirical literature and then proposed the research methodology that addressed the gaps identified in literature as well as to validate the statistical hypotheses. The study preferred this method because it allows an in-depth study of the subject. The target population was all the 187 parastatals in Kenya. Questionnaires were administered to collect qualitative and quantitative data from a sample of 127 heads of procurement, who were selected using simple random sampling, from the four strata. After data collection, quantitative data was coded using Statistical Package for Social Science (SPSS) version 22. Data was analyzed through descriptive statistical methods such as means, standard deviation, frequencies and percentage. Inferential analyses were used in relation to correlation analysis and regression analysis to test the relationship between the four explanatory variables and the explained variable.Results and conclusion: The results of regression analysis revealed there is a significant positive relationship between dependent variable and the independent variable. R square value of 0.647 means that 64.7% of the corresponding variation in performance of parastatals in Kenya can be explained or predicted by (management strategy, monitoring and evaluation, shareholder management and conflict resolution) which indicated that the model fitted the study data. The results of regression analysis revealed that there was a significant positive relationship between dependent variable and independent variable at (β = 0.647), p=0.000 <0.05).Based on the study findings, the study concludes that performance of parastatals can be improved by management strategy, monitoring and evaluation, shareholder management and conflict resolution. First, in regard to management strategy, the regression coefficients of the study show that it has a significant influence on performance of parastatals.Unique contribution to theory, policy and practice: The study recommended that public institutions should embrace contract administration so as to improve performance and further researches should to be carried out in other public institutions to find out if the same results can be obtained.
ETIKA BISNIS ISLAM DI KALANGAN PEDAGANG PASAR MANAQIB TQN SURYALAYA
Authors: Jamaludin Jamaludin , Gozali Dudang
Published: December 2020

Business ethics is a study of true or false moral. People doing business aims to findas much profit as possible, even using unethical means. The conventional classic economiclaw controls the capital as small as possible and dredge profits as good as possible. Thusmaking the business people to justify everything. It's no surprise that business people donot pay attention to social responsibility and business ethics. This research aims to knowthe Islamic business and to know the attitudes of the traders in the market Manaqibalready in accordance with Islamic business ethics. Research is done by collecting datafrom a variety of sources: books, magazines, journals or other writings and is supported by direct observation or observation and interviews and then then Symbolisions. The methodused in this research is a descriptive method with a normative juridical approach. Anormative juridical approach is an approach made based on key legal materials byexamining theories, concepts, principles of law and legislation. From the results of theresearch found that traders understand the ethical selling good by offering goods in anhonest, trustworthy, polite, and do not conceal the defective goods. When it is stored byother merchants they keep it well. Traders are traders who are ethics of Islamic business,because almost all traders in the market Manaqib have applied the foundations of Islamicbusiness ethics on the implementation of its businesses
HUKUM PENERAPAN PRINSIP TRANSPARANSI DALAM PENGELOLAAN DANA ZAKAT
Authors: Rahayu Solihah Sari
Published: December 2020

One measure of the management of good Zakat fund is to set the principle oftransparency. Transparency means openness and convenience for stakeholders inaccessing the information needed. This study tried to analyze the application oftransparency principle in the management of Zakat funds at the Amil Zakat Institute ofZakat Center people Panumbangan Unit. The purpose of this research to know theapplication of the principle of transparency in the management of Zakat funds in the AmilZakat Institute of Zakat Center people Panumbangan Unit. The methods used aredescriptive analysis, while data collection is done with interviews, observations anddocument studies and library data. The results of this research is openness and ease inobtaining information about the management of zakat funds in the Amil Zakat Institute ofZakat Center people Panumbangan Unit can only be accessed through monthly reports inthe form of newsletters and Facebook. This is due to lack of capital and human resourcesin the institution of Amil Zakat Central Zakat people unit Panumbangan less. Applicationof the principle of transparency in the management of Zakat funds in the Amil ZakatInstitute of Zakat Center people Panumbangan Unit is not optimal, because access to information is still limited that only through monthly reports in the form of newslettersand Facebook
Alternative Historiography
Authors: Kamal Noura
Published: December 2020

To obtain a deeper understanding about a society, it is important to look beyond the formal production of history and literature and consider fables, songs, folk poems, and proverbs which can reflect dimensions of the society that are usually neglected or forgotten about. Focusing on popular literature and folk art as a source of epistemological knowledge contributes to the construction of counter-narratives in Yemen. One of the major proponents of popular literature whose works serve as a key to understanding the conceptual worlds of the Yemeni people is the poet ʻAbd Allāh al-Baraddūnī (1929–1999). This blind scholar explored various types of popular literature and folk art in order to highlight the knowledge that generally is not documented but is an essential part of everyday life. Each of his genres has the ability to provide us with insights about Yemeni society such as forgotten historical events, the role of women in society, cultural beliefs, customs, practices, and historical events and circumstances that the society had to face. It is argued that, by focusing on the subaltern and marginal, al-Baraddūnī was anticipating trends in Western social science scholarship that have been apparent since the 1970s.
Imaginaries of the Future City in Kuala Lumpur, Singapore, and Vienna
Authors: Götsch Barbara
Published: December 2020

Today, cities the world over are entangled in aspirational future visions, as regions compete with others in different parts of the world for investment, tourists, and talent to guarantee economic growth. This paper approaches the cities of Kuala Lumpur, Singapore, and Vienna via their self-presentations and projections of the future. It sees cities as learning assemblages and pays attention to the narrative construction of imaginaries and future trajectories, as depicted in the respective city galleries and planning museums. All cities are found to be entangled in international policy trends and, in their unique ways, strive for recognition, competitiveness, and conviviality. Singapore emerges as torn between ambition, transparency, and control, while wanting to foster creativity and revive its cultural heritage; Kuala Lumpur appears simultaneously geared by boosterism and at home in opacity and multiplicity, privileging Malays while trying not to alienate other ethnic groups; and Vienna ambivalently projects a future that reconciles nostalgia for monarchic splendor and the social-democratic heritage of egalitarian urbanism with ambitions for international recognition and newly popular trends for citizen participation and “rights to the city.”
FOREIGN AID, DEBT RELIEF AND AFRICA’S DEVELOPMENT: PROBLEMS AND PROSPECTS
Authors:   Department of Public Administration  Federal Polytechnic Oko, Anambra State, Adaobi Elota
Published: December 2020

In recent years, the Paris club granted a number of African countries, including Nigeria, debt relief. This elicited widespread celebration in the capital cities of affected countries, where it was portrayed asaveritable launchpad to Africa’s development.This paper takes a critical look at the debt relief, with emphasis on its problems and prospects for Africa’s development. It is argued that while debt relief does offer some prospects for development, there is little or no evidence to suggest that such an outcome is automatic. The conditions that precipitated the debt crisis in the first instance, including an inequitable international economic order and political conditions tied to aid, are still very present in the debt relief regime. Corruption of the foreign aid regime by both internal and external actors has been compounded by the recent global economic crisis, posing further constraints on the effectiveness of foreign aid in Africa. If debt relief must yield the desired result, it has to be accompanied by a sustainable campaign to fundamentally reform the world order to make it more equitable, together with a drive for good governance that is not only democratic, but also efficient and development-oriented in Africa.
COVID-19 AND REGIONALISM IN AFRICA: THE SOUTHERN AFRICAN DEVELOPMENT COMMUNITY (SADC) RESPONSE
Authors:   Department of Political Science Federal University Otuoke, Bayelsa State, Chigozie Chilaka
Published: December 2020

This paper x-rayed COVID-19 and regionalism in Africa focusing on the response of the Sothern African Development Community (SADC). It tried to examine the trend of COVID-19 on the SADC sub-region; the impact of COVID-19 on the sub-region and responses by SADC member states. The paper notes that COVID-19 pandemic has had a deleterious effect on SADC member states with many lives lost and more still recovering from the virus. The pandemic no doubt has impacted considerably on economic activities such as tourism, education, aviation, and other major sectors of the region’s economy. It may be too early to know the full impact of COVID-19 on the SADC sub-region. To date the experience of member states are varied. While the SADC member states have responded well to the pandemic, member states should among others prioritize testing for persons exhibiting symptoms, including health workers and others who are in the line of the fight against COVID-19 and monitor ongoing services rendered by health workers in other to identify gaps to be filled.
COVID-19 PANDEMİSİ ve BEDEN-İKTİDAR İLİŞKİSİ: FOUCAULTCU BİR ANALİZ
Authors: KONAK Nahide , ERTAN Cihan
Published: December 2020

Bu makalenin temel amacı, Foucault’un cüzzam-egemen iktidar, veba-disiplin iktidarı ve çiçek hastalığı-güvenlik iktidarı kavramlaştırmaları temel alınarak, küresel bir salgın haline gelen Covid-19 pandemisi bağlamında iktidar-beden ilişkisini analiz etmektir. Makalenin temel sorusu: Covid-19 salgını bağlamında iktidarların beden üzerindeki denetimleri Foucault’un egemen, disiplin ve güvenlik yönetim iktidarı kavramlaştırmalarını ne derece yansıtmaktadır ve Covid-19 salgını yeni bir iktidar formunun ortaya çıkacağının ipuçlarını vermekte midir? Makalenin temel iddiası, Covid-19 uygulamaları ülkeden ülkeye değişim göstermesine rağmen Foucault’un bahsettiği üç iktidar mekanizmaları hibrit bir şekilde kullanmakta ve aynı zamanda yeni bir iktidar formunun ortaya çıkmasına öncülük etmektedir. Günümüz devletleri bilgi ve teknolojik gelişmeler sayesinde Foucault’un yönetimsellik teknolojilerine akışkan siber-biyogözetim iktidarı ve refleksif disiplin diye adlandırdığımız bir yenisini de eklemiştir.
The Influence of Motivation and Work Environment on Nurses Performance in Public Hospitals Sundari Medan
Authors: Waruwu Liferman , Asriwati Asriwati , Daryanto Eka
Published: December 2020

Hospital is a means of health efforts that carry out health service activities and is an institution for providing services. Complex services need to be managed professionally for human resources. One of the service providers at the hospital is a nursing staff. The purpose of this study was to determine the effect of motivation and work environment on the performance of nurses at RSU Sundari Medan in 2020. The research method used was an analytic survey with a cross sectional approach. The sample in this study were 60 nurses at Sundari Hospital Medan. The sampling method using the total population. The results of the study prove that motivation has a significant effect on the performance of nurses at Sundari Hospital Medan. This shows the results with a P-value (0.000) which is significantly smaller than α = 0.05. The work environment has a significant effect on the performance of nurses at Sundari Hospital Medan, showing the results with a p-value (0.081) which is significantly smaller than α = 0.05. The conclusion from the results of this study shows the influence of motivation, work environment on the performance of nurses in the hospital. Sundari Medan in 2020. It is hoped that the nursing managers can improve the quality of hospital services both in quality and quantity and minimize work stress and workload for nurses.
ANÁLISE DOS FATORES QUE SÃO CONSIDERADOS NA TOMADA DE DECISÃO DE COMPRA DO CONSUMIDOR DE PRODUTOS DERIVADOS DA ERVA- MATE (ILEX PARAGUARIENSIS A. ST. - HIL.)
Authors: SILVEIRA C. S. , CUNHA C. N. , SCHULTZ G.
Published: December 2020

A erva-mate (Ilex paraguariensis A. St. - Hil.), um dos principais produtos florestais não madeireiros do agronegócio florestal, é considerada nativa do Brasil e Paraguai, produzindo folhas que são utilizadas para diversos fins, principalmente in natura para o consumo do chimarrão e do tereré, além da fabricação de produtos que vêm se diversificando e atendendo novas oportunidades de mercado (SILVEIRA, 2017; SILVEIRA e SCHULTZ, 2019).
Swearing in The Wolf of Wall Street: A Pragmatic Study
Authors: Saffah Mariam D.
Published: December 2020

Although swearing is considered as an offensive act, it frequently occurs in movies which represent an instance of everyday conversation. It is the use of language to express a spectrum of emotions such as anger, frustration and annoyance. It also infuses intimacy, solidarity and jocularity. The present study tries to explore swearing from a pragmatic perspective taking the context in which it occurs into account. It also investigates its pragmatic functions, the reasons underlie the use of swear words and the different categories of swearing used in Martin Scorsese’s The Wolf of Wall Street. Besides, the study aims at developing an eclectic model to be used for data analysis.
Importance of Social Workers in Multidisciplinary Frontline Environment During Pandemics
Authors: Ahmed Dunya
Published: December 2020

This pandemic was exaptational for lots of professions; however, the focus was mainly on medical staff front-liners. In this paper, we explore the different role of the social workers in alleviating the human-factor of the COVID-19 patients and their familiesThe methodology of this study considers the multidisciplinary approaches that could enhance the social workers' role; since COVID-19 pandemic was not only a medical issue, but also a social issue. The study recommends a national governing body is set and to enforce standard practices as per the guidance of the social workers. The implication of the study shows the need for social workers in the new normal and the type of training and competency needed. A framework is proposed to prepare social workers pre-, during- and after-pandemics.
Prólogo
Authors: Perera Lumbí Juan Francisco
Published: December 2020

Este volumen número 25 comparte la compilación de 13 artículos divididos en 7 sesiones; de estos, 3 están vinculados a la Educación, uno en la sección de Salud, tres artículos en Historia y Actualidad de URACCAN, un artículo en Género e Interculturalidad; un artículo en Autonomía de la Costa Caribe; dos en la sección de Medio Ambiente y Recursos Naturales: y dos en la sesión Agropecuaria.
Aprendizaje de la matemática en primer año de Ingeniería Agroforestal, I semestre 2019
Authors: Artola García Javier Osmar
Published: December 2020

Esta investigación analiza el aprendizaje de la matemática en estudiantes de primer año de Ingeniería Agroforestal, para el análisis del aprendizaje se tomaron en cuenta los indicadores sexo, edad, etnia, estado civil, situación laboral, número de hijos, tiempo semanal para estudiar matemática, cantidad de consultas semanales hechas al docente de la asignatura y calificación de una serie de estrategias relacionadas con el aprendizaje. La investigación es de enfoque cuantitativo; ya que, se aplican técnicas estadísticas para organizar, representar datos y hacer resúmenes estadísticos de las variables del estudio, el alcance es correlacional; porque, se cuantifica la relación entre la actitud hacia la matemática y el rendimiento en la misma. También valora la actitud hacia el estudio de la matemática, identificando primero la actitud media de cada estudiante, posteriormente se calcula la actitud promedio colectiva. Para hacer un análisis más exhaustivo se comparó la actitud y la calificación por sexo, al final se correlacionó la actitud media con la calificación de la primera evaluación parcial.
TEACHER AND STUDENT IN THE AGE OF MEDIA CONVERGENCE
Authors: Wrońska Marta
Published: December 2020

The school’s task is to motivate and activate students to learn and work on themselves. Unfortunately, we still have too many teaching elements and unambitious tasks at school. That is why modern school education needs another transformation, which is forced by digital media, modern information technologies and related media convergence processes. A contemporary school should develop the passions and interests of its students. The digital environment cannot be underestimated, as it is an attractive non-school place for adolescents. In the article I present the theoretical outline of the concept of convergence and describe key forms of convergence. I conduct discourse in the area “Contemporary school versus media convergence” and present the results of my own research on the preparation of teachers and students to operate in the era of media convergence.
PARENTS IN SCHOOL SPACE
Authors: Lulek Barbara
Published: December 2020

All social groups as well as parents’ communities at school pursue their own social space reflecting values, preferences and objectives of each of the groups. However, the same space considered in physical and symbolic categories will have different meaning for each of the groups and units functioning at school. Learning, maintaining sensitivity and experiencing in the space takes time and requires socialising through interactions with other partners from the group. Sometimes the space evokes positive feelings, other times individuals may feel alienated and lost. This article presents space and place for parents in primary school. The author focuses on ways of domesticating, experiencing and exploiting the space, in the context of parents’ ritual behaviour. Using her own qualitative measures, the author seeks to determine parental space at school, suspended between two fields. Place for parents at school as well as a space expressing school and being affected with it.
SUICIDAL IDEATION AND SUICIDE THREATS AS ELEMENTS OF SUICIDAL BEHAVIOUR OF PEOPLE DEPRIVED OF LIBERTY
Authors: Cudak Sławomir
Published: December 2020

Suicidal ideation and suicide threats as elements of suicidal behaviour may occur in every social group, to a small extent though. Negative behaviour of this type increases among people in penal institutions. 112 prisoners took part in a study conducted in a detention center. The results of the study show that suicidal ideation is present among people in prison to a large extent and range. The length of the prison sentence causes a higher frequency of suicidal
ideation. Suicide threats occur among prisoners, however, with a much lower frequency than suicidal ideation. They are manifested for the purpose of manipulating the prison staff and gaining better living conditions in penal institutions.
Cytotoxic and Apoptotic Effects of Ferulic Acid on Renal Carcinoma Cell Line (ACHN)
Authors: Naseri Karimvand Mahshid , Kalantar Hadi , Khodayar Mohammad Javad
Published: December 2020

Background: Polyphenolic compounds have anti-proliferative effects and can trigger apoptosis in cancer cells. Ferulic acid is excessively found in various herbal products and fruits. Ferulic acid plays a role in the treatment of neurodegenerative diseases, cancer, diabetes, cardiovascular disease, inflammation, and bacterial and viral infections. Objectives: The purpose of this study was to evaluate the anticancer effect of ferulic acid on renal carcinoma cells (ACHN). Methods: To assess the anti-proliferative effect of ferulic acid, the renal carcinoma cell line (ACHN) was treated with different ferulic acid concentrations (10, 20, 40, 80, and 160 μM) for 24, 48, and 72 hours. Cell viability was measured using the MTT assay. The apoptosis of cancer cells was evaluated by flow cytometry and real-time PCR. Results: The IC50 of ferulic acid against ACHN cells was determined to be 30 μM at 72 hours with the MTT assay. The treatment of cells with ferulic acid concentrations of 30 and 60 μM caused a significant increase in the apoptosis index. The Bcl-2 gene expression level was significantly lower in the treated group than in the control group, and the Bax gene expression level was significantly higher in the treated group than in the control group (P < 0.001). Conclusions: The results of this study showed the apoptotic activity of ferulic acid against ACHN cells. These results can be helpful in the better understanding of the anticancer mechanism of ferulic acid, suggesting this substance as an alternative drug or in combination with conventional chemical treatments for cancer treatment.
Reasoning about Composite Shapes with Transformations
Authors: Lo Jane-Jane , Cox Dana C.
Published: December 2020

Flexible tasks increase students’ understanding of the properties of triangles, quadrilaterals, and transformations as well as provide opportunities for making and testing conjectures and arguments.
Recommendations for Teaching Division with Remainders
Authors: Lerner Joshua
Published: December 2020

Using lesson study, a team of educators teaches a carefully designed unit on division  with remainders to a class of third-grade students.
Reimagining Homework to Connect to Home and Community Knowledge
Authors: Bartell Tonya Gau
Published: December 2020

This is one of many practices to support teachers in assessing students’ mathematical thinking and better understanding students’ lived experiences that they can then draw on in mathematics instruction. This article highlights four examples of teachers’ efforts to reimagine homework for K–2 students.
Histopathological examination and evaluation of serum vitamin D levels in alopecia-is it necessary?
Authors: Bachaspatimayum Romita , Bishurul Hafi N.A , Thingujam Bipin
Published: December 2020

Background: Alopecia or hair loss may be of several types depending upon various etiological factors. Clinical and histopathological lapses have been encountered. Vitamin D has been found to have a role in the etiopathogenesis of alopecia. With this background, the study was undertaken to corroborate the histopathological and the clinical diagnosis and to find out the association between vitamin D levels and alopecia. Material and Methods: All patients of alopecia, attending out-patient Department of Dermatology in a tertiary care centre who were willing to participate were included while those due to infective causes or with incomplete reports were excluded from the prospective study of two years (January 2015-December 2016). Histopathological examination of skin biopsy was done and corroborated with the clinical diagnosis along with measurement of serum vitamin D levels by electrochemiluminescense immunoassay (ECLIA). Data was analyzed by spss20v; Fischer’s Exact test was used and a p value of 0.05 was taken as significant. Results: Out of total 50 patients, 20 (male:female=1.5:1) patients had both HPE and serum vitamin D reports and their results were analyzed. HPE and clinical diagnosis matched in only 10 patients (50%) with a significant p-value (p=0.007; p<0.05). Sufficient levels (>/= 30 ng/ml ) of serum vitamin D were found in only three (15%) with p value >0.05 (0.421) which was not significant. Conclusion: H.P.E. finding was significantly variable compared to clinical diagnosis. Hence, we should opt for a confirmatory skin biopsy wherever feasible. Evaluation of vitamin D is suggested with studies on a larger scale.
Form invariance of Hamilton's canonical equations of a nonholonomic mechanical s ystem
Authors: Qiao Yong-Fen  , Zhang Yao-Liang  , Han Guang-Cai  ,   (1)东北农业大学工程学院,哈尔滨  150030; (2)哈尔滨工程大学二系,哈尔滨  150001
Published: December 2020

In this paper,a form invariance of Hamilton's canonical equations of a nonholonomic mechanical system is studied.First,the definition and criterion of the form invariance in the system under infinitesimal transformations of groups are given .Next,the relation between the form invariance and the conserved quantity of the system is established.Finally,an example is given to illustrate the application of the result.
The influence of particle beams on the criterion of Bohm sheath
Authors: Gu Yun-Peng  , Ma Teng-Cai  ,   大连理工大学三束国家重点实验室,大连  116024
Published: December 2020

A twofluid model has been used to study the influence of the existence of the directive ions and directive electrons on the Bohm criterion of sheath. The main collisions included in this study consist of the charge exchange collision, ionization collision and total energy loss collision. The operated gas is argon with a gas pressure 101325 Pa. Numerical calculation results are obtained, which show that the minimal speed at which drift ions enter into the sheath for directive ions is decreased. This is also valid for the charge exchange collision. The directive electrons make this speed increase, but the ionization collision related to directive electrons makes the speed decrease obviously.
Magnetic properties and magnetic entropy change of Ce2Fe16Al near Curie temperature
Authors: Shen Jun  , Li Yang-Xian  , Hu Feng-Xia  , Wang Guang-Jun  , Zhang Shao-Ying  ,   (1)河北工业大学材料学院，天津  300310; (2)河北工业大学材料学院，天津  300310;中国科学院物理研究所，北京  100080; (3)中国科学院物理研究所，北京  100080
Published: December 2020

The magnetic properties and magnetic entropy change near Curie temperature TC have been investigated for the Ce2Fe16Al compound with a rhombohedral Th2Zn17type structure. The magnetic behaviour is found to obey the secondorder phase transition laws near TC which is 2758K. The critical indices β＝044±001， γ＝130±001， δ＝383±001 are obtained by calculating the field and temperaturedependences of magnetization. The critical indices satisfy the scaling law γ=β(δ-1), but these values deviate the threedimensional Heisenberg model. The maximum entropy change at TC under a field of 2T is 195J/kgK.
Evaluation of the contribution fraction of close collision to the backward electron emission induced by He+ ion
Authors: Lu Qi-liang  , Zhao Guo-Qing  , Zhou Zhu-Ying  ,   复旦大学现代物理所应用离子束物理实验室，上海  200433
Published: December 2020

Electron emission for He+ incident on solid surfaces of C, Cu and Al was simulated with the MonteCarlo method.The backward electron emission yields are calculated.The contribution fraction of electrons emitted by close collision to the total backward emission yield is evaluated with this code, and contribution fraction is 0.5,0.55 and 0.42 for C, Cu and Al, respectively. The effect of highenergy (E＞100eV) δ electrons on the backward electron yield is also considered in detail, and only those δ electrons with an energy of a few hundred eV plays an important role in the backward electron emission. For C, δ electrons will affect the behaviour of electron emission yield near the maximum electronic stopping power. Results of yield obtained are compared with experimental data of other authors, and a good agreement is found.
Ion acoustic solitary waves in a weakly relativistic plasma under transverse p erturbations
Authors: Duan Wen-Shan  , Hong Xue-Ren  ,   西北师范大学物理与电子工程学院，兰州  730070
Published: December 2020

Kadomtsev-Petviashvili(KP) equation is derived for unmagnetized,relativistic and hot ion plasmas.The result suggests that the nonlinear ion acoustic solitary waves in a relativistic hot ion plasma are stable even when there are some higher-order transverse perturbations.There are only compressive solitary waves in the relativistic hot ion plasmas,this has been vertified analytically in this paper.
Improved tanh-function method and the new exact solutions for the general variab le coefficient KdV equation and MKdV equation
Authors: Li De-Sheng  , Zhang Hong-Qing  ,   (1)大连理工大学应用数学系，大连  116024; (2)大连理工大学应用数学系，大连  116024;沈阳工业大学理学院，沈阳  110023
Published: December 2020

In this paper, by using the extended tanh-function method,the general variable coefficient KdV and MKdV equations are reduced to first-order variable coefficient nonlinear ordinary differential equations,and then the new exact solutions for these equations,which include exact soliton-like,rational formal and triangle function solutions,are obtained through solving these ordinary differential equations-
Infrared analysis on hydrogen content and Si-H bonding configurations of hydrogenated amorphous silicon films
Authors: Luo Zhi  , Lin Xuan-Ying  , Lin Shun-Hui  , Yu Chu-Ying  , Lin Kui-Xun  , Yu Yun-Peng  , Tan Wei-Feng  ,   汕头大学物理系，汕头  515063
Published: December 2020

The Fourier transform infrared (FTIR) spectrum is an effective technology for studying the hydrogen content (CH) and the silicon-hydrogen bonding configuration (Si-Hn) of hydrogenated amorphous silicon (a-Si∶H) films. In this paper, CH and Si-Hn of a-Si∶H films, fabricated at different substrate temperatures (Ts) by plasma enhanced chemical vapor deposition method, have been obtained by analyzing their FTIR spectra that are treated by baseline fitting and Gaussian function fitting. The effects of Ts on CH and Si-Hn are studied.
Study of optical properties in GaAs1-xSbx/GaAssingle quant um wells
Authors: Luo Xiang-Dong  , Bian Li-Feng  , Xu Zhong-Ying  , Luo Hai-Lin  , Wang Yu-Qi  , Wang Jian-Nong  , Ge Wei-Kun  ,   (1)香港科技大学物理系，香港; (2)中国科学院半导体研究所超晶格国家重点实验室，北京  100083
Published: December 2020

GaAsSb/GaAs single quantum wells (SQWs) grown by molecular beam epitaxy are studied by selectively-excited photoluminescence (SEPL) measurement. For the first time, we have simultaneously observed the PL from both type Ⅰ and type Ⅱ transitions in GaAsSb/GaAs heterostructure in the SEPL. The two transitions exhibit different PL behaviours under different excitation energy. As expected, the peak energy of type I emission remains constant in the whole excitation energy range we used, while type Ⅱ transition shows a significant blue shift with increasing excitation energy.The observed blue shift is well explained in terms of electron-hole charge separation model at the interface. Time-resolved(TR) PL exhibits more type Ⅱ characteristic of GaAsSb/GaAs QW. Moreover, the results of the excitation-power-dependent PL and TRPL provide more direct information on the type-Ⅱ nature of the band alignment in GaAsSb/GaAs quantum-well structures. By combining the experimental results with some simple calculations, we have obtained the strained and unstrained valence band offsets of Qv＝1.145 and Q0v＝0.76 in our samples, respectively.
Some new soliton wave solutions for (2+1)-dimensional Broer-Kaup equations
Authors: Zhao Xi-Qiang  , Tang Deng-Bin  , Wang Li-Min  , Zhang Yiao-Ming  ,   (1)南京航空航天大学空气动力学系,南京  210016; (2)南京航空航天大学空气动力学系,南京  210016;山东理工大学，淄博  255049; (3)山东理工大学，淄博  255049
Published: December 2020

By a simple transformation, (2+1)-dimensional Broer-Kaup equations are turned to a simple equation. Some new soliton solutions are obtained by combining the tra nsformation with the homogeneous balance method. The method given in this paper can be used to solve other nonlinear physical model.
Exact solution of a kind of n-dimensions non-spherical harmonic oscillator p otential
Authors: Long Chao-Yun  , Chen Ming-Lun  , Cai Shao-Hong  ,   (1)贵州大学物理系,贵阳  550025; (2)贵州师范大学物理系，贵阳  550002
Published: December 2020

In this paper,the Schrdinger equation with a non-spherical harmonic oscillator potential in n-dimensions is solved.The exact energy equation and the normalized wave function are obtained.The general formulas of matrix elements of op erator rs are presented.
Theoretical study of the infrared spectrum of clusters
Authors: He Chun-Long  , Wang Feng  , Li Jia-Ming  ,   (1)清华大学物理系原子分子纳米科学研究中心, 北京  100084; (2)清华大学物理系原子分子纳米科学研究中心, 北京  100084;中国科学院物理研究所, 北京  100080
Published: December 2020

According to the time correlation function theory, the infrared spectrum of clu sters can be calculated by using the molecular dynamics simulation. As an examp le, the infrared spectrum of C60 is calculated using orthogonal tight -bind ing molecular dynamics simulation. The calculated infrared spectrum is sufficien t to identify the experimental infrared spectrum. The above method is a powerful tool for the study of nano systems.
Two-dimensional periodically poled LiNbO3 nonlinear photonic crystal
Authors: Ni Pei-Gen  , Ma Bo-Qin  , Cheng Bing-Ying  , Zhang Dao-Zhong  ,   中国科学院物理研究所和凝聚态物理中心光物理实验室,北京  100080
Published: December 2020

A two-dimensional periodically poled lithium niobate crystal with a 13.64 μm period was fabricated. The inverted duty cycle was about 23%. The second harmonic output for the second-order quasi-phase-matching (QPM) against the input was measured. The maximum second harmonic internal conversion efficiency was higher than 40%. All results implied that the second-order QPM could be used to obtain high-frequency conversion efficiency. Compared with the first-order QPM, the second-order QPM can reduce the requirement for the poling technique and the mask fabrication.
Threshold analysis for the limit cycle and chaotic oscillation of the radiation field in a traveling wave tube amplifier
Authors: Hao Jian-Hong  , Ding Wu  , Zhang Zhi-Chou  ,   (1)北京应用物理与计算数学研究所,北京  100088; (2)中国工程物理研究院研究生部,北京  100088;石家庄师范专科学校物理系,石家庄  050801
Published: December 2020

In terms of the coupled equations of the radiation field and motion of the electron in a traveling wave tube amplifier, the threshold current at which the limit cycle or chaotic oscillation of the radiation field starts occurring is obtained. The result of numerical calculation shows that the nonlinear unsteady states may appear in a certain range of the parameters for the radiation field. The eff ect of the detuning on the threshold is relatively strong when the interaction r egion is longer. The relations of the output power with the three parameters (de tuning, current and interaction length) become chaotic when the device operates in the highly nonlinear regime, and the higher output power can be obtained if t he parameters are controlled suitably.
Anomalous thermal conductivity enhancement in the mixed state of MgB2
Authors: Yang Dong-Sheng  , Wu Bai-Mei  , Li Bo  , Zheng Wei-Hua  , Li Shi-Yan  , Chen Xian-Hui  , Cao Lie-Zhao  ,   中国科学技术大学结构分析研究开放实验室,物理系,合肥  230026
Published: December 2020

The thermal conductivity of MgB2 polycrystalline sample in the mixed state has been investigated as a function of magnetic field (0-7 T) and temperature (5-45 K). The thermal conductivity increased rapidly in low magnetic fields, and became saturation in higher fields. This behaviour correlates with the two-gap electronic structure of MgB2. Analysis indicates that the remarkable en hancement of thermal conductivity of MgB2 polycrystalline sample in the mixed state cannot be completely attributed to the electronic contribution.
Structure and magnetic properties of Nd0.5Sr0.4Pb0.1MnO3 manganites
Authors: Lu Yi  , Li Qing-An  , Di Nai-Li  , Cheng Zhao-Hua  , Xue Yan-Jie  , Zhang Li  , Chen Na  , Xiao Hong-Wen  , Zhang Bai-Sheng  , Chen Dong-Feng  ,   (1)中国科学院物理研究所磁学国家重点实验室，北京  100080; (2)中国原子能科学研究院，北京  100240
Published: December 2020

Structure,magnetic and transport properties of polycrystalline Nd0.5S r0.4Pb0.1MnO3 were experimentally studied by ne utron powder diffraction at room temperature and magnetic measurement.The neutron diffraction shows that the space group of this orthorhombic structure is Pnma,i.e.its structure exhibits crystal field distortion.Its Curie temperature TC equals 273K by the M-T curve.According to the R-T curve,it shows a ferromagnetic metal- paramagnetic semiconductor transition as temperature increases and Tp =225 K.Using the competing between manganites crystal field and double exchange inter action explains the metal property at room temperature.
Fabrication of silicon-on-insulator-multilayer structure by epitaxial layer transfer
Authors: Xie Xin-Yun  , Lin Qing  , Men Chuan-Ling  , Liu Wei-Li  , Xu An-Huai  , Lin Cheng-Lu  ,   中国科学院上海微系统与信息技术研究所信息功能材料国家重点实验室,上海  200050
Published: December 2020

Due to the very low thermal conductivity of the thick-buried oxide layer, the silicon-on-insulator(SOI) power devices have an inherent self-heating effect, which limits their operation at high current level. Adopting the new silicon-on-insulator-multilager (SOIM) structures is a good solution to reduce the self-heating effect. In this paper, the SOIM structures were successfully produced by electron beam evaporation of silicon on porous silicon and epitaxial layer transfer. The quality of the structures was investigated by XTEM and SRP. Experimental results show that the buried Si3N4 layer is amorphous and the new SOIM sample has good structural and electical properties.
Time-resolved study of the random lasing in ZnO powder
Authors: Sun Tao  , K.S.Wong  , Zhang Wei-Li  , Chai Lu  , Wang Qing-Yue  , K.L.Wong  ,   (1)天津大学精仪学院超快激光研究室，光电信息技术科学教育部重点实验室，天津  3 00072; (2)天津大学精仪学院超快激光研究室，光电信息技术科学教育部重点实验室，天津  3 00072;俄克拉荷马州立大学电气与计算机工程系，激光与光子学研究中心，斯帝尔沃特，O K 74078; (3)天津大学精仪学院超快激光研究室，光电信息技术科学教育部重点实验室，天津  3 00072;香港科技大学物理系，九龙清水湾，中国香港; (4)香港科技大学物理系，九龙清水湾，中国香港
Published: December 2020

In this letter, we investigated random lasing phenomenon in ZnO powder using the pump_probe technique. Under 267nm laser pumping, supernarrow single_mode emission and multi_mode emission were observed by precisely controlling the pumping intensity and the excitation beam size on the sample. The supernarrow emission peaks are much narrower than the normal luminescence and ASE spectra. The time_resolved pump_probe measurement shows that the lifetime of the emission state above the lasing threshold is only a few picoseconds which demonstrates that the formation of supernarrow random lasing bandwidth is due to stimulated emission.
Multi-wavelength laser based on SOA and cascaded sampled fibre gratings
Authors: Zhang Xin-Liang  , Zhang Ying  , Sun Jun-Qiang  , Liu De-Ming  , Huang De-Xiu  ,   华中科技大学光电子工程系，武汉  430074
Published: December 2020

Novel multi-wavelength laser, based on semiconductor optical amplifier (SOA) and cascaded two-stage sampled fibre gratings, is theoretically and experimentally investigated in this paper. The reflection spectrum of the sampled fibre grating and lasing output spectrum are calculated. Exploiting SOA and sampled fibre grating manufactured by our laboratory,a multi-wavelength laser with 11 wavelengths, in which the output power difference is smaller than 1dB, is achieved. Compared with the scheme based on the ordinary sampled fibre grating, more lasing wavelengths and more uniform lasing output power can be achieved in the novel scheme, which can be concluded from both theoretical calculation and experimental analysis.