bluuebunny/crossref_metadata_2025 huggingface dataset:
PENERAPAN MODEL PEMBELAJARAN MID (MEANINGFUL INSTRUCTIONAL DESIGN) BERORIENTASIMIND MAPPING UNTUK MENINGKATKAN PEMAHAMAN KONSEP MATEMATIKA SISWA KELAS VII-C SMP NEGERI 4 SERIRIT
Authors: Sekarini I.G.A , Suparta I.N , Astawa I W. P
Published: September 2019

Penelitian ini bertujuan untuk mengetahui peningkatan pemahaman konsep matematika siswa melalui penerapan model pembelajaran MID (Meaningful Instructional Design) berorientasi mind mapping pada siswa Kelas VII-C SMP N 4 Seririt. Jenis penelitian ini adalah penelitian tindakan kelas yang terdiri atas tiga siklus, yang setiap siklus terdiri atas tahap perencanaan tindakan, pelaksanaan tindakan, observasi dan evaluasi, serta refleksi. Subjek penelitian ini adalah siswa Kelas VII-C SMP N 4 Seririt sebanyak 30 orang. Data pemahaman konsep matematika dikumpulkan dengan tes uraian. Semua data yang dikumpulkan dianalisis secara deskriptif. Hasil penelitian menunjukkan bahwa rata-rata nilai pemahaman konsep matematika siswa padasetiap siklus mampu mencapai nilai KKM 70. Hasil Siklus I mencapai nilai 70,28, Siklus II mencapai 71,11, dan Siklus III mencapai 75,00. Peningkatan pemahaman konsep matematika siswa terjadi karena model pembelajaran MID berorientasi mind mapping memiliki keunggulan yang pada setiap tahapnya memberikan siswa kesempatan untuk menemukan, memahami dan mengerti konsep matematika yang dipelajarinya. Dengan menyelesaikan berbagai permasalahan yang diberikan pada LKS, siswa juga dilatih untuk kesiapan maupun keaktifannya. Hal tersebut disebabkan karena siswa menggunakan pengalaman dan pengetahuan awalnya untuk menerima, memproses, dan menyimpan suatu konsep sehingga lebih bermakna dalam proses belajar mengajar. Di mana hal ini berdampak pada peningkatan pemahaman konsep matematika siswa. Selain itu, respon siswa terhadap penerapan model pemebelajaran MID berorientasi mind mapping  dalam pembelajaran matematika tergolong positif dengan rata-rata skor respon sebesar 59,60. Kata-kata kunci :Model pembelajaran MID, mind mapping,  pemahaman konsep matematika.
PENGEMBANGAN MEDIA PEMBELAJARAN MATEMATIKA BERBASIS GEOGEBRA DENGAN PENDEKATAN TEORI VAN HIELE PADA POKOK BAHASAN NILAI MAKSIMUM DAN MINIMUM
Authors: Kurniawan I G. D , Sugiarta I M , Suweken G
Published: September 2019

AbstrakPenelitian ini adalah penelitian pengembangan yang bertujuan untuk menghasilkan produk media pembelajaran matematika berbasis Geogebra dengan pendekatan teori van Hiele pada pokok bahasan nilai maksimum dan minimum. Model pengembangan yang digunakan adalah Model 4-D (define, design, develop, disseminate) tetapi hanya dilaksanakan hingga tahap 3 (develop).Teknik anaisis data yang digunakan adalah teknik analisis data deskriptif kualitatif dan kuantitatif. Penelitian dilaksanakan di SMA Negeri 2 Negara dengan melibatkan 9 orang sebagai peserta uji coba. Terdapat tiga aspek yang dikaji dalam pengembangan media pembelajaran ini, yaitu: (1) kevalidan, (2) kepraktisan, dan (3) keefektifan. Hasil penelitian menunjukkan bahwa rata-rata skor dari ahli media pembelajaran adalah 4,67(sangat tinggi), oleh pengajar adalah 4,30 (sangat tinggi), persentase kepraktisan oleh guru 97,75% (sangat tinggi),persentase kepraktisan siswa sebesar 90% (sangat tinggi), dan hasil tes efektifitas media pembelajaran adalah 88,89%.Berdasarkan hasil uji coba tersebut media yang dikembangkan memenuhi kriteria valid, praktis, dan efektif dalam pokok bahasan nilai maksimum dan minimum. KataKunci:Geogebra, Maksimum, Media, Minimum, Teori van Hiele  AbstractThis research is a development research that aimed to produce Geogebra-based mathematics learning media based on the van Hiele learning theory, subject of maximum and minimum values. The development model used is the 4-D Model (define, design, develop, disseminate) but the model is only execated up to the third stage (i.e. development stage). Data analysis used are qualitative and quantitative descriptive data analysis techniques. The study was conducted in SMA N 2 Negara involving 9 people as trial participants. There are three aspects studied in the development of this learning media, namely: (1) validity, (2) practicality, and (3) effectiveness. The results showed that the average score of the learning media expert is 4.67 (very high), by the teacher is 4.30 (very high), the percentage of practicality by the teacher is 97.75% (very high), the percentage of student practicality is 90% (very high), and the results of the learning media effectiveness test are 88.89%. Based on the results of the trial, the developed media meets the criteria of validity, practicality, and effectiveness in the subject matter of maximum and minimum values. Keywords: Geogebra, Maxsimum, Media, Minimum, van Hiele Theory
PENERAPAN BLENDED LEARNING BERBANTUAN SCHOOLOGY UNTUK MENINGKATKAN KEAKTIFAN DAN PRESTASI BELAJAR MATEMATIKA SISWA KELAS VIII A1 SMP NEGERI 6 SINGARAJA
Authors: Purwitasari D.I , Astawa I.W.P , Sudiarta I.G.P
Published: September 2019

AbstrakPenelitian dengan menerapkan Blended Learning berbantuan Schoology ini bertujuan untuk mengetahui peningkatan keaktifan dan prestasi belajar matematika siswa. Penelitian ini merupakan penelitian tindakan kelas yang dilaksanakan dalam tiga siklus yang masing-masing siklus terdiri dari empat tahap, yakni (1) perencanaan tindakan, (2) pelaksanaan tindakan, (3) observasi dan evaluasi, serta (4) refleksi. Subjek penelitian ini adalah siswa kelas VIII A1 SMP Negeri 6 Singaraja tahun ajaran 2018/2019 sebanyak 32 orang siswa. Pengumpulan data untuk keaktifan belajar siswa menggunakan lembar observasi sedangkan pengumpulan data prestasi belajar siswa menggunakan tes prestasi belajar berbentuk uraian. Hasil dari penelitian ini adalah persentase skor keaktifan belajar siswa mengalami peningkatan di setiap siklus yaitu 51,08%, 52,08%, dan 62,74%. Skor rata-rata dari tes prestasi belajar siswa dari siklus ke siklus yaitu 52,19; 85,16 dan 95,54 dimana 96,86% siswa memperoleh skor diatas KKM pada akhir siklus. Hal ini menunjukkan bahwa penerapan Blended Learning berbantuan Schoology dapat meningkatkan keaktifan dan prestasi belajar siswa.   Kata Kunci: Blended learning, Schoology, keaktifan belajar, prestasi belajar  AbstractThe research by implementing Schoology's and assisted by Blended learning is aims to find out the improvement of students' activeness and mathematics learning achievement. This research is about class action that conducted in three cycles, define by four stages, which is (1) planning, (2) action, (3) observation and evaluation, and (4) reflection. The subjects of this study were class VIII A1 SMP Negeri 6 Singaraja at period 2018/2019 with total 32 students. Data for student learning activeness collected using observation sheets while data student learning achievement collect using form with detail descriptions. The results of this study are the percentage of students' learning activeness score has increased in each cycle, which is 51.08%, 52.08%, and 62.74%. The average score of the student achievement test from cycle to cycle is 52.19; 85.16 and 95.54 where 96.86% of students score above the standard (KKM) at the end of the cycle. This shows that the application of Schoology-assisted Blended learning can improve student activity and learning achievement. Keywords : Blended learning, Schoology, learning activeness, learning achievement
Upaya Meningkatkan Kemampuan Berpikir Kritis Siswa dan Sikap Demokratis Siswa pada Mata Pelajaran PKn melalui Penerapan Model Pembelajaran Kooperatif Tipe Group Investigation (GI)
Authors: Pater I Made
Published: September 2019

Penelitian ini bertujuan untuk meningkatkan kemampuan berpikir kritis siswa dan sikap demokratis Siswa pada mata pelajaran PKn melalui penerapan model pembelajaran kooperatif tipe Group Investigation (GI) pada Siswa Kelas X TITL 1 SMK Negeri 3 Singaraja. Jenis penelitian ini tergolong penelitian tindakan kelas (PTK). Penelitian dilakukan sebanyak 2 siklus dengan rancangan siklus terdiri dari tahap rencana tindakan, pelaksanaan tindakan, evaluasi/observasi dan refleksi. Subjek penelitian ini adalah siswa kelas X TITL 1 SMK Negeri 3 Singaraja tahun pelajaran 2018/2019 dengan jumlah siswa 35 orang. Data dikumpulkan melalui observasi, tes, angket dan dokumentasi. Data yang didapat selanjutnya dianalisis dengan teknik deskriftif kualitatif dan deskriftif kuantitatif. Hasil analisis menunjukkan bahwa telah terjadi peningkatan kemampuan berpikir kritis kelas X TITL 1 SMK Negeri 3 Singaraja tahun pelajaran 2018/2019 dan terjadi peningkatan sikap demokratis siswa yang berada pada kategori tinggi. Kata Kunci : GI (Group Investigation), Kemampuan Berpikir Kritis, Sikap Demokratis
Korelasi Antara Konsep Diri dengan Kemampuan Pemecahan Masalah IPS
Authors: Ayu Wardani Ni Made , Suniasih Ni Wayan , Sujana Ni Wayan
Published: September 2019

Penelitian ini bertujuan untuk mengetahui korelasi antara konsep diri dengan kemampuan pemecahan masalah IPS siswa kelas V SD Gugus Untung Surapati, Kecamatan Denpasar Timur, pada Tahun Pelajaran 2017/2018. Jenis penelitian ini adalah penelitian ex post facto, korelasional. Populasi dari penelitian ini adalah siswa kelas V yang berada di Gugus Untung Surapati, Denpasar Timur Tahun Pelajaran 2017/2018 yang berjumlah 525 orang siswa. Penentuan sampel menggunakan teknik proportional random sampling dengan taraf kesalahan 5% sehingga diperoleh banyak sampel dari populasi adalah 213 siswa. Data diperoleh melalui hasil angket konsep diri dan tes esai kemampuan pemecahan masalah IPS yang dikerjakan oleh responden. Teknik analisis data pada penelitian ini menggunakan analisis korelasi product moment. Sebagai uji prasyarat analisis adalah uji normalitas sebaran data. Berdasarkan hasil analisis diperoleh rhitung = 0,446. Pada taraf signifikansi 5% dengan n = 213, maka diperoleh rtabel = 0,138. Karena rhitung = 0,446 > rtabel = 0,138 maka dapat diartikan bahwa H0 ditolak dan Ha diterima. Jadi, dapat disimpulkan bahwa terdapat korelasi yang signifikan antara konsep diri dengan kemampuan pemecahan masalah IPS Kelas V SD Gugus Untung Surapati, dengan arah korelasi positif, artinya semakin tinggi konsep diri yang dimiliki siswa maka semakin meningkat pula kemampuan pemecahan masalah IPS siswa. Berdasarkan hasil penelitian tersebut, konsep diri memiliki hubungan dalam kemampuan pemecahan masalah siswa khususnya dalam muatan pembelajaran IPS, sehingga dukungan dari berbagai pihak sangat diperlukan agar konsep diri positif siswa dapat terbentuk dengan baik dan kemampuan pemecahan masalah siswa dapat berkembang secara optimal. Kata Kunci : konsep diri, kemampuan pemecahan masalah
A Comparison of Stochastic Claims Reserving Methods
Authors: Tuysuz Sukriye , Pekel Pervin
Published: September 2019

In order to preserve their solvency, it is very important for insurance companies to accurately estimate their future required reserves. The aim of this article is to determine reserves by using different stochastic models: 1) distribution-free model (Mack's model), 2) probability distribution based models (Normal, Poisson, Gamma and Inverse Gaussian distributions), and 3) these latter probability based models combined with bootstrapping. To implement these models we used data on life-insurance and non-life insurance. Our findings indicate among distribution based methods, Mack's model (dataset 1 and 2) and Gamma probability distribution based model (dataset 3) are the best model in estimating reserves. The model based on Normal distribution produces the worst results, whatever the dataset. Regarding results of bootstrapping based on probability distribution models, they show that method based on Normal probability distribution (dataset 1 and 3) and ODP distribution (dataset 2) fit better. Our results also indicate that bootstrap method based on Chain-Ladder performs quit similarly than the best fitting probability distribution based bootstrap models. Among all retained models, methods based on bootstrapping present higher good-of-fit.
Buddhists’ Motivations for Revisiting Religious Temples in Malaysia
Authors: Shao Zhen Teo , Hassan Siti Hasnah , Mohamad Osman
Published: September 2019

This study aims to unravel the motivations of Malaysian Buddhists in revisiting religious temple. Although there are various sacred sites for Chinese believers, but less writers have tried to draw a systematic research into Chinese religious tourism in Asia. Empirical results from this study discovered that religious value, personal and spiritual growth, as well as the need for social interaction have significant effects on revisit intention. However, the aspects of achievement and cultural value were found to be insignificant. By understanding the underlying motivations, the businessmen and government will be benefited when participating into the religious tourism sector.
Experimental Investigation of the influence of the Cutting Conditions on the Surface Roughness in Hole turning the SCM400 Steel
Authors: Son Nguyen Hong , Thinh Hoang Xuan , Nguyen Nhu-Tung , Trung Do Duc
Published: September 2019

This paper presented the experimental results about investigation of the influence of the cutting conditions on the surface roughness when hole turning the SCM400 steel. Three cutting paramesters that have mentioned in this study included cutting speed, axial feed rate, and cutting depth. The experimental design was chosen following the orthogonal matrix and added the center experiment points. The analyzed results show that the axial feed rate has the greatest degree of impact on the surface roughness. And, the second and third factors have negligible effect on the surface roughness that are cutting speed and cutting depth, respectively. These results will guide the determination of the cutting conditions in order to machining the part surface with roughness that was ensured the setting requirement. Finally, the directions for further research were also mentioned in this paper.
A case of Gastric Sleeve Stricture Resistant to Endoscopic Dilatation
Authors: Gupta Paritosh , Kundra Dhruv Nayan , Khanna Amanpriya , Arora Chinmay
Published: September 2019

Obesity is becoming an increasingly common disease across the world. Various restrictive and malabsorbptive surgical procedures have been developed to tackle morbid obesity. These procedures though efficient in causing weight loss and decrease in co – morbidities present with their own unique complications. Sleeve gastrectomy is one of the more recent, mainly restrictive procedure which has been gaining rapid popularity. Stricture of the gastric sleeve pouch is a rare and distressing complication of this procedure. Here we present a case of a 44-year-old woman who underwent Sleeve gastrectomy in Gulf 5 years back. She developed a stricture of the sleeve pouch for which she underwent two endoscopic dilatations which did not provide much relief. She was finally treated with a Roux – en – y gastro-jejunostomy which finally improved her symptoms.
Analisis Penerimaan Sistem Informasi Rumah Sakit Padma Lalita Menggunakan TAM
Authors: Putra Yusuf Wahyu Setiya , Kusrini Kusrini , Wibowo Ferry Wahyu
Published: September 2019

Tujuan dari penelitian ini adalah untuk menganalisis penerimaan user pada sistem informasi rumah sakit dengan menggunakan variabel Kegunaan yang Dirasakan (Perceived Usefullness), kemudahan yang dirasakan (Percieved Ease of Use) dan variabel sikap pengguna (Atittute toward Using) yang ada pada TAM (Technology Acceptance Model). Sampel pada penelitian ini berjumlah 66 responden. Data diperoleh menggunakan kuesioner yang telah diuji validitas dan reliabilitasnya, kemudian dianalisis dengan teknik regresi linier berganda. Hasil analisis persamaan regresi ke-1 menunjukkan variabel Perceived Usefullness (X1) memiliki pengaruh signifikan terhadap variabel Attitute toward Using (Y) dengan t hitung sebesar 6,551 dengan signifikansi p = 0,000 (<0,05). Variabel Percieved Ease of Use (X2) berpengaruh signifikan terhadap variabel Attitute toward Using (Y) dengan t hitung 1,988 dengan signifikan p = 0,011(<0,05). Hasil analisis persamaan regresi ke-2 menunjukkan bahwa variabel X1 dan X2 secara bersama-sama berpengaruh signifikan terhadap Attitute toward Using (Y) karena nilai statistik F Hitung = 59,712 dengan signifikansi p = 0,000(<0,05).Kata Kunci — Sistem informasi, Perceived Usefulness, Perceived Ease of Use, Attitude Toward Using, TAMThe purpose of this study is to analyze user acceptance in hospital information systems using Perceived Usefulness, Perceived Ease of Use, and Atittute toward Using variables in TAM (Technology Acceptance). Model). The sample in this study amounted to 66 respondents. Data obtained using questionnaires that have been tested for validity and reliability, then analyzed by multiple linear regression techniques. The results of the analysis of the 1st regression equation show that the Perceived Usefulness variable (X1) has a significant influence on the Attitute toward Using (Y) variable with t count of 6.551 with significance p = 0.000 (<0.05). The variable Percieved Ease of Use (X2) has a significant effect on the Attitute toward Using (Y) variable with t count 1.988 with a significant p = 0.011 (<0.05). The results of the analysis of the second regression equation show that variables X1 and X2 together have a significant effect on Attitute toward Using (Y) because the statistical value F count = 59.712 with significance p = 0.000 (<0.05).Keywords — Information System, Perceived Usefulness, Perceived Ease of Use, Attitude Toward Using, TAM
Analisis Return on Investment (ROI) dengan Penelusuran Basis Data Guna Perhitungan Tingkat Keberhasilan Promo
Authors: W Akrilvalerat D , Saputra Joni , Purwanto Irfan , Afriansyah M. , Hasan Nur Fitrianingsih , Wati Vera , Hakim Lukmanul
Published: September 2019

Perusahaan Planet Host adalah perusahaan penyedia layanan pembelian domain dan web hosting untuk menyimpan data website yang dibutuhkan konsumen. Selayaknya perusahaan lain, strategi pemasaran melalui promosi menjadi salah satu hal yang harus dilakukan perusahaan untuk menyediakan penawaran produk yang menarik konsumen dengan tujuan konsumen akan berlangganan secara terus-menerus. Strategi promosi dilakukan pihak perusahaan agar tepat sasaran, sehingga tujuan perusahaan tercapai. Biaya modal pemasaran yang cepat kembali menjadi salah satu tujuan perusahaan. Tingkat kesuksesan dalam kegiatan pemasaran menerapkan perhitungan menggunakan ROI (Return on Investment). Hasil perhitungan ini dibantu penelusuran melalui database untuk mengetahui hasil profitable dari ROI untuk membantu pengambil keputusan mengukur efektivitas dari keseluruhan operasi perusahaan. Hasil dari penelitian setelah penelusuran query basis data dengan View, Store Procedure, Trigger, analisa ROI penjualan produk pada kode promo Harbolnas total pembelian 12 produk, Black Friday total pembelian 23 produk dan total pembelian nonpromo 12 produk. Namun, kode promo Harbolnas lebih signifikan dalam memperoleh laba yaitu 54% selama periode November-Desember, dibanding dengan promo Black Friday yaitu 51,75%.Kata Kunci — web hosting, domain, strategi promosi, basis data, ROIPlanet Host company is a company that provides domain and web hosting services to store website data needed by consumers. Like other companies, a marketing strategy through promotion is one of the things that companies must do to provide product offerings that attract consumers with the aim of consumers going to subscribe continuously. Promotion strategies are carried out by the company to be right on target, so that the company's goals are achieved. The cost of marketing capital is fast becoming one of the company's goals. The level of success in marketing activities applies calculations using ROI (Return on Investment). The results of this calculation are assisted by searching through the database to find out the profitable results of ROI to help decision makers measure the effectiveness of the company's overall operations. Results from research after searching database queries with View, Store Procedure, Triggers, analysis of product sales ROI on Harbolnas promo codes total purchases of 12 products, Black Friday total purchases of 23 products and total purchases of 12 nonpromo products. However, Harbolnas promo code is more significant in gaining profit, which is 54% during the November-December period, compared to the Black Friday promo, which is 51.75%.Keywords — web hosting, domain, promotion strategy, database, ROI
Manajemen Bandwidth Menggunakan Metode Hierarchical Token Bucket (HTB) di Farid.net
Authors: Lukman Lukman , Saputro Arif Marda , Wicaksono Andi Satrio , Hartomo Farid Hakim Tri , Jatun Muhammad Nugraha
Published: September 2019

Pada masa modern seperti ini kebutuhan akan internet semakin meningkat tajam, baik itu untuk bekerja mengolah data dan hiburan. Untuk membangun infrastruktur jaringan yang baik tentunya dibutuhkan penanganan yang tepat sesuai dengan kondisi di lapangan. Dalam penelitian ini kami mengangkat tema penerapan metode HTB yang akan diimplementasikan dalam jaringan RT/RW Net di Farid.net. Dalam analisa jaringan ini terdapat suatu masalah, setelah pengelompokan data dari pelanggan dimana terdapat keluhan tentang bandwidth yang didapat tidak sesuai dengan paket yang dipilih, sehingga hal tersebut menimbulkan ketidaknyamanan pengguna. Untuk mengatasi masalah tersebut kami mendapatkan solusi dengan menerapkan metode HTB. Cara kerja dari metode ini sendiri, membagi bandwidth kedalam beberapa kelas, yang mana terdapat dua kelas utama yaitu parent dan child, metode ini memungkinkan administrator untuk membagi bandwidth berdasarkan besar bandwidth yang diminta pelanggan. Dari penerapan metode HTB dapat diambil kesimpulan bahwa bandwidth yang didapat antar user menjadi lebih stabil dan merata, hal tersebut dapat dibuktikan dengan melalui Speedtest dan pemantauan traffic. Selain itu konektivitas jaringan pun juga lebih stabil dikarenakan bandwidth dari client sudah terkontrol.Kata Kunci — bandwidth, Hierarchical Token bandwidth, HTB.In modern times like this the need for the internet is increasing sharply, both for working on data processing and entertainment. To build a good network infrastructure, of course, proper handling is needed according to the conditions in the field. In this study we raise the theme of applying the HTB method which will be implemented in the RT / RW Net network at Farid.net. In this network analysis there is a problem, after grouping data from customers where there are complaints about the bandwidth obtained that is not in accordance with the package chosen, so that it causes user inconvenience. To overcome this problem, we got a solution by applying the HTB method. The workings of this method itself, dividing bandwidth into several classes, where there are two main classes, namely parent and child, this method allows the administrator to divide the bandwidth based on the bandwidth requested by the customer. From the application of the HTB method, it can be concluded that the bandwidth obtained between users becomes more stable and equitable, this can be proven by Speedtest and traffic monitoring. In addition, network connectivity is also more stable because the bandwidth of the client is controlled.Keywords — bandwidth, Hierarchical Token bandwidth, HTB.
PENGARUH MOTIVASI DAN EFEKTIVITAS KEPEMIMPINAN TERHADAP PRODUKTIVITAS
Authors: Sarjana Sri
Published: September 2019

The objective of this research is to know the effect of motivation and leadership effectiveness to productivity at vocational school in the subdistrict of West Cikarang Bekasi district. The research was conducted using survey method with path analysis technique. Research samples were selected as much as 74teachers using simple random sampling technique. The data obtained through questionnaires and analyzed using path analysis techniques. Based on this research of data obtained the following conclusions: First, the motivation have positive direct effect to productivity. That is, improvement of motivation will lead to increased productivity. Second, the leadership effectiveness have positive direct effect to productivity. That is, improvement of leadership effectiveness will lead to increased productivity. Third, motivation have positive direct effect to the leadership effectiveness. The productivity can be improved by increasing motivation and leadership effectiveness.
SENSATION SEEKING DAN RISK-TAKING BEHAVIOR PADA REMAJA AKHIR DI UNIVERSITAS SURABAYA
Authors: Purwoko Dennis , Sukamto Monique Elizabeth
Published: September 2019

Risk-taking behavior refers to any kind of behaviors that put adolescents in a risky condition involving ethical, financial, health/safety, social, and recreational (Blais & Weber, 2006). The involvement of adolescents in risky behaviors can be influenced by personality factor, such as sensation-seeking, that is the adolescent’s need to seek for different, new, and complex sensations and experiences and willing to accept any risks to get such sensation (Zuckerman, 2007). The aim of this study was to evaluate the correlation between sensation seeking and risk-taking behavior among late adolescents in Universitas Surabaya. Participants in this study were male students of Universitas Surabaya aged 18-21 years (N=100). The result showed that there was positive correlation between sensation seeking and risk-taking behavior (r= .531, sig. < .01)among late adolescents in Universitas Surabaya.
MAKNA MOGOK KERJA BAGI BURUH
Authors: Jondar Aloysius
Published: September 2019

Since the days of the Old Order government, the New Order, Reform phenomenon demonstration of workers in Indonesia were never resolved. Proven to date issues of the demonstration is still running. Even in the era of reform frequency of demonstrations of the workers became more transparent because in line with the government's attitude would listen and convey the aspirations of workers. In connection with this phenomenon, the study of the phenomenon of workers become increasingly keranjiangan for writers. But the study of labor problems only limit themselves to study the phenomenon of demonstrations of workers in 1996. In line with the phenomenon that have been raised, then that becomes the problem to find out in this study, whether the demonstrations by workers in 1996 in Surabaya carry meaning for the workers themselves. Results showed that the phenomenon of workers in Surabaya brings meaning to the workers themselves. Meaning of demonstrations for workers in Surabaya, their awareness and responsibility of the employer, the weakness of the management and policies of the company, t he claim by the minimum wage and a living wage, improvement allowances and clarity retirement, intervention workers when they do strike, their weaknesses SPSI and the role of government policy weaknesses.
MENGKAJI PERAN KOPERASI DI INDONESIA
Authors: Jondar Aloysius , Saputro Suryati Eko
Published: September 2019

The ideals of the founders of cooperatives so that cooperatives can be perceived by members to bring meaning for the development of cooperatives in Indonesia. This can be realized through its contribution to national and local economic development through GDP. To be able to prove this opinion, then the study to look for answers in this study is 1). Is the role of sharia cooperatives able to help provide the welfare of farmers to be able to free vegetable farmers from the entanglement of debt or bond "remuneration"? 2 ). What problems did Sharia cooperatives have in providing the welfare of farmers to be able to free vegetable farmers from entanglement of debt or "reciprocity" bonds? The findings are the function and role of cooperatives nationally run by Sharia cooperatives. It is run because the Shariah cooperative has performed the function and role of the cooperative as a joint effort between the members and the board to the welfare of vegetable farmers in Claket village. This is evident from the existence of sharia cooperatives that dare to be different with the existenceof savings and loan cooperatives in general. The role of sharia cooperatives is to provide welfare to vegetable farmers. Because agriculture is one of the important and noble things in human life. The role of sharia cooperatives to prosper vegetable farmers in Claket Village, Pacet Subdistrict, Mojokerto Regency, East Java is urgently needed. Because not only vegetable farmers who benefit from sharia cooperatives but the public in general can feel it, which is getting a cheap vegetable prices. The problem faced by vegetable farmers in Claket village is vegetable farmers who always get loan money from middlemen before they harvest. At the time of harvesting the vegetables they must return the loan money from the middleman. Thus, crop yields from farmers only benefit themiddlemen and do not bring economic change to farmers.
ANALISIS STRATEGI PEMASARAN PRODUK ASURANSI JIWA PT. ZURICH TOPAS LIFE DALAM MENINGKATKAN PERSAINGAN BISNIS DI SURABAYA
Authors: Liana Chatarina Lili , Chamariyah Chamariyah , Wiroko Ruddy
Published: September 2019

This study aims to determine and describe the business development of PT. Zurich Topas Life in Surabaya. Furthermore, to analyze the marketing strategy and analyze the strengths, weaknesses, opportunities and threats of PT. Zurich Topas Life in Surabaya. In addition, to analyze the steps undertaken by PT. Zurich Topas Life to increase business competition in Surabaya. This type of research includes descriptive research with qualitative approach with the aim to know and analyze the problems posed. Informants in this study were three employees and three marketers from PT. Zurich Topas Life. The results showed that the business of PT. Zurich Topas Life has developed, has strengths, weaknesses, threats and opportunities. PT. Zurich Topas Life also takes steps to increase business competition in Surabaya.
Nonparametric tests for stationary analysis in hydrological data
Authors: Aires Uilson Ricardo Venâncio , Reis Guilherme Barbosa , Campos Jasmine Alves
Published: September 2019

One of the main problems for water resources management systems has been the climate change and the intensification of anthropogenic activities in river basins. In this context, this work aimed to analyze the dynamics of land use and cover and its influence on temporal variability on streamflow data. The behavior of hydrological data (streamflow and rainfall) over time was analyzed by applying the nonparametric tests of Mann Kendall and Pettitt. Images derived from orbital sensors using the Random Forest classifier assessed the anthropogenic influence in the area, land use, and cover classification. The rainfall data did not present significant changes over time, according to the applied tests. However, the low annual flow and average annual flow presented nonstationary behavior, with a trend of reduction over time. As rainfall did not change in its patterns over time, the main reason associated with the changes in streamflow regimes was associated with the changes in land use and land cover, especially in the areas for crops, that had an increase of 48% in the study period, which can contribute to increase the demand for water and affect the streamflow. The results obtained confirm the importance of this study for water management systems to adapt itself to the changes in hydrological behavior over time.
Fuentes Díaz, Antonio y Daniel Fini (Coords.). (2018). Defender al pueblo. Autodefensas y Policías Comunitarias en México
Authors: Zavaleta Betancourt José Alfredo
Published: September 2019

Defender al pueblo. Autodefensas y policías comunitarias en México, libro sugerente, controvertido y creativo, coordinado por Fuentes y Fini (México: buap, 2018), es lo mejor que se ha escrito hasta ahora sobre el tema. En su conjunto, la obra explica la historia regional de dos formas de autoprotección indígena, mestiza y comunitaria, que los coordinadores del texto han denominado “grupos de defensa”.Fuentes Díaz Antonio & Daniel Fini (Coords.). (2018). Defend the people. Armed Self-defenses and Community Police in MexicoAbstractDefend the people. Armed self-defense groups and community police in Mexico, an intriguing, controversial and creative book, coordinated by Fuentes & Fini (Mexico: BUAP, 2018), is the best that has been written so far on the subject. As a whole, the work explains the regional history of two forms of indigenous, mestizo and community self-protection, which the coordinators of the text have called "advocacy groups".Fuentes Díaz, Antonio et Daniel Fini (Coordinateurs). (2018). Défendre le peuple. Autodéfenses et Agents de Police Communautaires au MexiqueRésuméDéfendre le peuple. Autodéfenses et Agents de Police Communautaires au Mexique, livre suggestif, controversé et créatif, coordonné par Fuentes et Fini (México: buap, 2018), est le meilleur livre jamais écrit jusqu’à maintenant sur le thème. Dans son ensemble, l’œuvre explique l’histoire générale de deux formes d’auto protection indigène, métisse et communautaire, que les coordonnateurs du texte ont désigné « groupes de défense ».
FEDERALISMO, FACÇÕES E FREIOS E CONTRAPESOS NA EMERGÊNCIA DO CONSTITUCIONALISMO NORTE-AMERICANO
Authors: Liziero Leonam
Published: September 2019

O presente artigo tem como objetivo analisar a obra O Federalista de autoria de Alexander Hamilton, James Madison e John Jay em seus principais aspectos que serviram de base para o desenvolvimento do constitucionalismo norte-americano, em especial aos fundamentos do federalismo. Deste modo, mostra-se o Estado originado pela Constituição de 1787 uma forma de organização política inédita, superando o modelo das então antigas confederações. Da mesma forma, demonstra-se o equilíbrio buscado por Madison, evitando os extremos de tirania e anarquia, especialmente pelo fenômeno da formação das facções. Além disso, o sistema de freios e contrapesos se mostra como um aprimoramento da rígida doutrina da separação do poder, de modo a permitir um melhor encaixe na tensão entre interesses no exercício das funções soberanas do Estado.
A SOBREPOSIÇÃO DE MUNICÍPIO EM TERRA INDÍGENA E A PROTEÇÃO FEDERATIVO-CONSTITUCIONAL
Authors: LAZARTE MORON EDUARDO DANIEL , MOTA TASSIGNY MONICA
Published: September 2019

O presente artigo objetiva analisar o seguinte problema: se a criação de um Município dentro de terras indígenas já demarcadas e homologadas contém elementos que possam configurar eventual conflito federativo, considerando que compete constitucionalmente aos Estados a criação dos Municípios e à União a demarcação de terras indígenas. Para tanto, parte-se da análise da Ação Civil Originária n.º499 em que se discute a criação do Município de Pacaraima na Terra Indígena São Marcos no Estado de Roraima. Ao problema de tese formulado, levanta-se a hipótese, ao final confirmada, de que existem fundamentos constitucionais para concluir pela ocorrência de conflito federativo e atrair a competência originária do Supremo Tribunal Federal, embora o próprio Supremo tenha decidido pela inexistência de conflito entre a União e o Estado apto a provocar abalo ao pacto federativo na referida matéria. No tocante às questões metodológicas, destacam-se o estudo de caso, o uso da vertente teórica jurídico-dogmática e do raciocínio dedutivo com a utilização de literatura direta ou transversal à temática, bem como de dados legislativos e jurisprudência nacional.
AS AÇÕES AFIRMATIVAS, PESSOAS COM DEFICIÊNCIA E O ACESSO AO ENSINO SUPERIOR NO BRASIL – CONTEXTO, MARCO NORMATIVO, EFETIVIDADE E DESAFIOS.
Authors: Sarlet Ingo Wolfgang , Sarlet Gabrielle Bezerra Sales
Published: September 2019

À luz da arquitetura jurídico-constitucional e de outros aportes, programas criados pelo poder público (em especial mediante outras leis e atos normativos) e o labor da jurisprudência dos Tribunais Superiores, o que se busca é produzir uma análise sobre a natureza e a efetividade dos instrumentos normativos que dizem respeito a proteção das pessoas com deficiência no âmbito interno, com foco na promoção do acesso à educação em nível superior inclusiva e emancipatória. No que concerne ao problema da igualdade material na condição de igualdade de oportunidades e de superação das desigualdades fáticas, foi possível verificar que, na seara da concretização do direito à educação superior, o Brasil ainda se encontra em situação deficitária, especialmente na falta de abrangência do contingente populacional das pessoas com deficiência tanto na modalidade presencial quanto na modalidade EAD.
OS FUNDAMENTOS CONSTITUCIONAIS DAS LEIS QUE PROÍBEM O USO DE MÁSCARAS EM MANIFESTAÇÕES
Authors: Corrêa Murilo Duarte Costa
Published: September 2019

O presente artigo discute os fundamentos constitucionais da proibição do uso de máscaras (e da dissimulação do rosto) no espaço público a partir do estudo de caso das Ações Diretas de Inconstitucionalidade que impugnaram a Lei Estadual n. 6528/2013, conhecida como “Lei Brazão”, e foram julgadas improcedentes pelo Tribunal de Justiça do Estado do Rio de Janeiro em dezembro de 2014. Após situar os principais marcos constitucionais e legislativos que dão forma jurídica à proibição sob análise, verifica-se, a partir de uma abordagem empírico-indutiva, a hipótese de que o uso do critério da proporcionalidade, no caso concreto, dissimulou tecnicamente operações de exceção constitucional e fundamentou interpretações autoritárias das liberdades públicas. Eis o que desvelaria não apenas um uso paradoxal da retórica da proteção a direitos, mas as operações concretas de exceção – aqui consideradas como potenciais extensões judiciárias dos mecanismos policiais de controle social – que os tribunais adotam na avaliação constitucional de políticas de segurança pública restritivas de direitos fundamentais.
High-Throughput Discovery and Evaluation of a General Catalytic Method for N-Arylation of Weakly Nucleophilic Sulfonamides
Authors: Becica Joseph , Hruszkewycz Damian , Steves Janelle , Elward Jennifer , Leitch David , Dobereiner Graham
Published: September 2019

Sulfonamides are poor nucleophiles in Pd C-N coupling catalysis, hindering synthesis of densely-functionalized N,N-diaryl sulfonamide motifs relevant to medicinal chemistry. Through targeted high-throughput experimentation (HTE), we have identified the Pd/AdBippyPhos catalyst system as an effective and general method to construct this difficult to access moiety. In particular, AdBippyPhos is critical for the installation of heteroaromatic groups. Computational steric parameterization of the investigated ligands reveals the potential importance of remote steric demand, where a large cone angle combined with an accessible Pd center is correlated to successful catalysts for C-N coupling reactions.
Synthesis, Characterization and Reactivity of Chromium(VI) Alkylidenes
Authors: Wu Pengcheng , Yap Glenn P. A. , Theopold Klaus
Published: September 2019

Chromium(VI) dialkyls are remarkably acidic, yielding a new set of anionic chromium alkylidenes upon deprotonation with KN(TMS)2. We describe the characterization of three anionic chromium alkylidenes of the type [(ArN)2Cr(=CHR)(CH2R]- (R = tBu, SiMe3, Ph; Ar = 2,6-diisopropylphenyl). NEt4[(ArN)2Cr(=CHSiMe3)(CH2SiMe3)] has been structurally characterized by X-ray diffraction. We have also studied the C-H activation of cyclohexane effected by the transient neopentylidene (ArN)2Cr(=CHCMe3). This reaction generated a tri-nuclear chromium(IV) complex, namely ‘[Cr(NAr)2]3’, as well as the two organic products cyclohexene and neopentane. A probable intermediate in this reaction could be trapped by PPh3 to form (ArN)2Cr(PPh3)2. The latter undergoes ligand substitution reactions with ethylene and CO to produce p-acid complexes of tetravalent chromium.
DFT and Thermodynamics Calculations of Surface Cation Release in LiCoO2
Authors: abbaspour tamijani ali , Bennett Joseph W. , Jones Diamond T. , Cartagena-Gonzalez Natalia , Jones Zachary R. , Laudadio Elizabeth D. , Hamers Robert , Santana Juan A. , Mason Sara E.
Published: September 2019

When exposed to environmental conditions, LCO can release Co cations, a known toxicant. In this study, we build on previous work (Bennett et al., Environ. Sci. Technol., 52, 5792-5802, 2018, Bennett et al., Inorg. Chem., 57, 13300-13311, 2018) using theory and modeling to understand the thermodynamic driving forces of ion release in water. We assess how the calculated predictions for ion release depend on aspects of the structural surface model. For example, we vary the number of atomic layers used to form the slab, we explore different surface terminations and hydroxyl group coverages, and we vary the periodic in-plane supercell to assess how ion release depends on the density of formed vacancies. We also benchmark the DFT + Thermodynamics modeling across a range of computational factors such as the choice of exchange correlation functional and pseudopotential type. Such assessment is critical, as there is no direct experimental information for comparison. We devise a generalizable scheme for predicting a threshold pH at which Co release from LCO becomes favorable. We put forward that this scheme could provide information about how much Co is released from LCO under variable pH conditions, and could therefore be used to inform macroscopic contaminant fate models.
Cyanosulfurylides (CSY): Carboxylic Acid Protecting Groups That Prevent Aspartimide Formation During Peptide Synthesis
Authors: Neumann Kevin , Farnung Jakob , Baldauf Simon , Bode Jeffrey
Published: September 2019

Peptide chemistry has made great progress in the last decades but the frequent occurrence of aspartimide formation during peptide synthesis remains a formidable challenge. Aspartimide formation leads to low yields in addition to costly purification steps or even inaccessible peptide sequences, hindering both academic research and industrial applications. Here, we report a new alternative approach to address this longstanding challenge of solid phase peptide synthesis by utilizing cyanosulfurylides to mask carboxylic acids by a stable C–C bond. These functional groups – formally zwitterionic species – are exceptionally stable to all common manipulations and impart improved solubility and processing during peptide synthesis. Deprotection is readily and rapidly achieved under mild, aqueous conditions with electrophilic halogenating agents via a highly selective C–C bond cleavage reaction. This new protecting group was employed for the synthesis a range of peptides and proteins including teduglutide, ubiquitin, and LDLa – a peptide that was not accessible on solid-phase peptide synthesis before due to three aspartimide-prone motifs. This protecting group strategy has the potential to overcome one of the most difficult aspects of modern peptide chemistry.
Mechanistic Insight into Biopolymer Induced Iron Oxide Mineralization Through Quantification of Molecular Bonding
Authors: Sand K.K. , Jelavic Stanislav , Dobberschütz Sören , Ashby P.D. , Marshall Matthew J. , Dideriksen Knud , Stipp S.L.S. , Kerisit S.N. , Friddle R.W. , DeYoreo J.J.
Published: September 2019

Microbial production of iron (oxy)hydroxides on polysaccharide rich biopolymers occurs on such a vast scale that it impacts the global iron cycle and has been responsible for major biogeochemical events. Yet the physiochemical controls these biopolymers exert on iron (oxy)hydroxide formation are poorly understood. Here we used dynamic force spectroscopy to directly probe binding between complex, model and natural microbial polysaccharides and common iron (oxy)hydroxides. Applying nucleation theory to our results demonstrates that if there is a strong attractive interaction between biopolymers and iron (oxy)hydroxides, the biopolymers decrease the nucleation barriers, thus promoting mineral nucleation. These results are also supported by nucleation studies and density functional theory. Spectroscopic and thermogravimetric data provide insight into the subsequent growth dynamics and show that the degree and strength of water association with the polymers can explain the influence on iron (oxy)hydroxide transformation rates.
Diverting Radical-Anionic C-H Amidation to a C-N/C-O Cascade for the Construction of Hydroxyisoindolines from Unprotected Amides
Authors: Elliott Quintin , dos Passos Gomes Gabriel , Evoniuk Christopher , Alabugin Igor
Published: September 2019

An intramolecular C(sp3)-H amidation proceeds in the presence of t-BuOK, molecular oxygen, and DMF. The success of this reaction hinges on the deprotonation of a mildly acidic N-H bond and selective radical activation of a benzylic C(sp3)-H bond towards hydrogen atom transfer (HAT). DFT calculations suggest a thermodynamically favorable sequence of steps mediated by the generation of a radical-anion intermediate. As this intermediate starts to form a two-centered/three-electron (2c,3e)C-N bond, the extra electron is “ejected” into the π*-orbital of the aromatic core. The resulting cyclic radical-anion is readily oxidized by molecular oxygen to forge the C-N bond of the product. The transformation of a relatively weak reductant into a stronger reductant (i.e., “reductant upconversion”) allows one to use mild oxidants such as molecular oxygen. In contrast, the second stage of NH/CH activation forms a highly stabilized radical-anion intermediate incapable of electron transfer to molecular oxygen. Hence, the oxidation is impossible and an alternative reaction path opens via coupling between the radical anion intermediate and either superoxide or hydroperoxide radical. The hydroperoxide intermediate transforms into the final hydroxyisoindoline products under basic conditions. The use of TEMPO as an additive was found to activate less reactive amides. The combination of experimental and computational data outlines a conceptually new mechanism for the conversion of unprotected amides into hydroxyisoindolines proceeding as a sequence of C-H amidation and C-H oxidation.
Isolation and characterization of components from roots of Premna latifolia Roxb
Authors: Gowtham M  , Asharani I V  , Paridhavi M
Published: September 2019

The aim of the current work was to isolate and characterize structurally fascinating and biologically intriguing compounds from the dried roots of Premna latifolia. Dried plant roots were subjected to soxhalation with ethyl alcohol and later to column chromatography. The individual compounds were isolated by preparative thin-layer chromatography followed by structural characterization using various spectral ways like LCMS, IR, 1D-NMR and 2D-NMR (1H-1H NMR and 1H-13C NMR). Three totally different compounds were isolated and characterised as Compound 1: n-Tridecanyl n-Tetracosanoate, Compound 2: Stigmanstan -3β-olyln-octadec-9ʹ, 12ʹ-dienoate and Compound 3: n-Tetracosanol for the first time from Premna latifolia roots.
呼吸机计量检测不合格的常见原因与分析
Authors: 杨 馥源
Published: September 2019

在医疗系统中呼吸机的应用有着至关重要的医疗意义，呼吸机的运行功能以及运行技术随着时代的不断发展以及科学技术的迅猛进步也获得了改进和优化，极大地提升了呼吸机的运行效率。但与此同时，也给呼吸机故障排除工作带来了较大的困难。常见的呼吸机故障主要包括呼吸器自检不合格、呼气量和吸气量偏差较大以及呼吸机气源不足等，严重影响呼吸机计量检测的效率以及质量，不利于呼吸机功能的有效发挥。本文主要针对呼吸机计量检测不合格的常见原因进行探讨，指出呼吸机计量检测效率提升的相关对策，希望能为呼吸机的使用提供一定的参考。
关于中老铁路通信跨国互联的探讨
Authors: 杨 志 , 张 进
Published: September 2019

针对“一带一路”重点铁路项目，从跨国铁路口岸站通信互联实际入手，对中老铁路提出两种通信互联方案，分析了各方案的优缺点，并提出最终建议方案，为中国跨境铁路口岸站通信互联互通提供可借鉴性。
岩石矿物分析化验中的质量控制要点分析
Authors: 韩 凌飞
Published: September 2019

中国社会经济发展促进城市规模扩大，矿产资源总量消耗增多。矿产资源需求量的进一步提升需要开发资源技术能力提高。岩石矿物分析化验工作直接关系矿产资源的利用效率。为此，应当加强对此方面的技术研究。通过了解岩石矿物，具体探究岩石矿物化验的质量控制水平，才能够更好完成矿产资源开发利用。希望通过本研究能够对未来技术应用与创新提供借鉴和帮助。
Implementasi Model Pembelajaran Inkuiri Terbimbing untuk Melatihkan Keterampilan Proses Sains pada Materi Kesetimbangan Kimia
Authors: Ningtiyas Fienda Ayu
Published: September 2019

Penelitian ini mendeskripsikan implementasi model pembelajaran inkuiri terbimbing untuk melatihkan keterampilan proses sains pada materi kesetimbangan kimia. Rancangan penelitian yang digunakan adalah One Group Pretest Posttest Design. Keteramplan proses sains yang dilatihkan kepada siswa meliputi merumukan masalah, menyusun hipotesis, mengidentifikasi variabel, merencanakan investigasi, memroses data, menganalisis investigasi, dan penarikan kesimpulan. Hasil penelitian menunjukkan bahwa keterampilan proses sains siswa melalui implementasi model pembelajaran inkuiri terbimbing memiliki rata-rata nilai berturut-turut untuk keterampilan merumuskan masalah, menyusun hipotesis, mengidentifikasi variabel, merencanakan investigasi, memroses data, menganalisis investigasi, dan penarikan kesimpulan adalah 89,58; 81,25; 87,50; 76,04; 89,58; 67,71; dan 86,46. Keterampilan proses sains siswa telah mencapai ketuntasan karena telah mencapai nilai ≥80 dengan ketuntasan klasikal sebesar 75%.Kata kunci: keterampilan proses sains, model pembelajaran inkuiri terbimbing, kesetimbangan kimia.