Advanced Resources Reservation in Mobile Cellular Networks: Static vs. Dynamic Approaches under Vehicular Mobility Model

Many studies in literature have shown that the bandwidth of an ongoing flow can dynamically change during multimedia sessions and an efficient bandwidth allocation scheme must be employed. This paper focuses its attention on the management of predictive services in Wireless Infrastructure Dynamic Networks. In particular, two classes of service are considered: NSIS-Mobility Independent Predictive and NSIS-Mobility Dependent Predictive, where NSIS is the Next Steps in Signaling protocol, employed for resources reservation in Integrated Services architectures. A general prediction technique is proposed, based both on the analysis of time spent into a cell by mobile nodes and on the probabilities of hand-in and hand-out events of mobile nodes from wireless cells. User mobility needs to be firstly analyzed and a novel realistic mobility model has been considered, differently from some existing works in which synthetic mobility is generated. The analysis of user mobility is mandatory when the reduction of passive resource reservations for NSIS-MIP users is desired, with a good enhancement in system utilization. Moreover, predictive reservation and admission control schemes have been integrated. The performance of the 2D wireless system is evaluated in terms of average system utilization, system outage probability, number of admitted flows and reservation prediction errors. We provided to carry out an extensive simulation campaign, in order to assess the goodness of the proposed idea: we verified that good results (in terms of perceived utility, bandwidth and admitted flows) can be obtained, outperforming also some existing works.

Numerical Characterization of Acoustic Cavitation Bubbles with Respect to the Bubble Size Distribution at Equilibrium

In addition to bubble number density, bubble size distribution is an important population parameter governing the activity of acoustic cavitation bubbles. In the present paper, an iterative numerical method for equilibrium size distribution is proposed and combined to a model for bubble counting, in order to approach the number density within a population of acoustic cavitation bubbles of inhomogeneous sizing, hence the sonochemical activity of the inhomogeneous population based on discretization into homogenous groups. The composition of the inhomogeneous population is analyzed based on cavitation dynamics and shape stability at 300 kHz and 0.761 W/cm2 within the ambient radii interval ranging from 1 to 5 µm. Unstable oscillation is observed starting from a radius of 2.5 µm. Results are presented in terms of number probability, number density, and volume probability within the population of acoustic cavitation bubbles. The most probable group having an equilibrium radius of 3 µm demonstrated a probability in terms of number density of 27%. In terms of contribution to the void, the sub-population of 4 µm plays a major role with a fraction of 24%. Comparisons are also performed with the homogenous population case both in terms of number density of bubbles and sonochemical production of HO●, HO2●, and H● under an oxygen atmosphere.

Detection of misinformation on garlic and COVID-19 in Twitter: A machine learning-based approach (Preprint)

BACKGROUND Garlic-related misinformation is prevalent whenever a virus outbreak occurs. Again, with the outbreak of coronavirus disease 2019 (COVID-19), garlic-related misinformation is spreading through social media sites, including Twitter. Machine learning-based approaches can be used to detect misinformation from vast tweets. OBJECTIVE This study aimed to develop machine learning algorithms for detecting misinformation on garlic and COVID-19 in Twitter. METHODS This study used 5,929 original tweets mentioning garlic and COVID-19. Tweets were manually labeled as misinformation, accurate information, and others. We tested the following algorithms: k-nearest neighbors; random forest; support vector machine (SVM) with linear, radial, and polynomial kernels; and neural network. Features for machine learning included user-based features (verified account, user type, number of followers, and follower rate) and text-based features (uniform resource locator, negation, sentiment score, Latent Dirichlet Allocation topic probability, number of retweets, and number of favorites). A model with the highest accuracy in the training dataset (70% of overall dataset) was tested using a test dataset (30% of overall dataset). Predictive performance was measured using overall accuracy, sensitivity, specificity, and balanced accuracy. RESULTS SVM with the polynomial kernel model showed the highest accuracy of 0.670. The model also showed a balanced accuracy of 0.757, sensitivity of 0.819, and specificity of 0.696 for misinformation. Important features in the misinformation and accurate information classes included topic 4 (common myths), topic 13 (garlic-specific myths), number of followers, topic 11 (misinformation on social media), and follower rate. Topic 3 (cooking recipes) was the most important feature in the others class. CONCLUSIONS Our SVM model showed good performance in detecting misinformation. The results of our study will help detect misinformation related to garlic and COVID-19. It could also be applied to prevent misinformation related to dietary supplements in the event of a future outbreak of a disease other than COVID-19.

Pengaruh Motivasi Kerja Dan Disiplin Kerja Terhadap Kinerja Karyawan Pada Bank BRI Syariah

The current era of globalization has an impact on the development of a business, organization or company consisting of many components that compose into one unit for the same purpose, motivation and discipline in working at BRI Syariah bank. This type of research is quantitative, using the method of observation, interviews, questionnaires and documentation. Multiple regression analysis tool. Based on the results of the study, it shows that there is a positive and significant effect between variable X1 on variable Y has a regression coefficient value of 2.762. There is a positive but not significant effect between variable X2 on variable Y has a regression coefficient value of -.223. There is a positive and significant effect simultaneously between variables X1 and X2 on variable Y. Variable X1 is a variable that is considered more dominant and significant to variable Y with a probability number of 0.016 and a regression coefficient value of 2.762.

Hubungan Kepercayaan Diri dengan Kecerdasan Kinestetik Anak Usia 5-6 Tahun di TK IT Al-Ittihad Rumbai Pesisir Kota Pekanbaru

This research is based on observations of researchers at TK IT Al-Ittihad Rumbai PesisirPekanbaru City. In this observation the researchers concluded that kinesthetic intelligence requires good self-confidence. The purpose of this study was to determine the relationship of Confidence with Kinesthetic Intelligence in Children Aged 5-6 Years at TK IT Al-Ittihad Rumbai Pesisir, Pekanbaru City. This research is a quantitative study with the type of correlation research. The study population was children aged 5-6 years in TK IT Al-Ittihad Rumbai Pesisir Pekanbaru City, with the sample used amounted to 30 children aged 5-6 years. The data collection technique used is observation. Analysis of the study used Pearson product moment correlation test with nominal data characteristics with the help of SPSS IMB ver.24. Based on the calculation results of the correlation test, the results of the bivariate correlation coefficient obtained between Confidence with kinesthetic intelligence of rxy = 0.964. This shows that there is a relationship between self-confidence with kinesthetic intelligence. As an evaluation criterion, if probability> 0.05 then Ho is accepted, whereas if probability <0.05 then Ho is rejected (Syofian, 2014). In the correlation test table results obtained a probability number of 0,000, where 0,000 <0.05 then Ho is rejected. This means that there is a significant positive relationship between the two variables.

ADOLESCENT ATTITUDES ABOUT SEXUALLY TRANSMITTED DISEASES WITH PREMARITAL SEX RESPOND IN MANDIRI PRIVATE VOCATIONAL SCHOOL, JOMBANG REGION

Introduction: Attitude is the reaction or response of someone who is still closed to the stimulus or object. Sexually transmitted infections are diseases that can be transmitted from one person to another through sexual contact. Premarital adolescent sexual intercourse is sexual intercourse carried out by adolescents before marriage. This study is to understand the relationship of adolescents about sexually transmitted infections with premarital sex in the Independent Practice of the Jombang Regional Midwife in 2019. Method: The research method used is correlational analytic with cross sectional research, that is, research that requires measurement / observation time, variable, free and variable data, which is collected simultaneously at a certain time, so it does not need to be continued. The population of young women in the Independent Practice of the Jombang Regional Midwife is 92 people. The sample of this study was 75 people. Results: The results of this study are Adolescent attitudes about infectious infections more than half of 45 respondents (60%) with positive attitudes and attitudes about premarital sex more than half 45 respondents (62.7%) with positive attitudes. Conclusion: The results of the analysis using the Chi-Square statistical test, obtained the probability number (p) = 0,000 <(α = 0.05), then H0 is rejected and H1 is accepted, meaning that there is a relationship with women about the protection of sexually transmitted sex with premarital sex in Independent Practice of the Jombang Regional Midwife in 2019. Efforts should be made to overcome the problems of open sharing or consultation of related issues or protected matters in the BK (Counseling Guidance) and also as midwives their knowledge of premarital sex should be increased Keywords: attitude, sexually transmitted infections, premarital sex

Deteksi Bakteri Coliform pada Es Batu yang Disajikan di Tempat Makan Tenda di Kecamatan Grogol Petamburan

Terdeteksinya bakteri pencemar pada es batu menunjukkan rendahnya kualitas es batu, yang mungkin berasal dari bahan air, alat yang digunakan dalam pembuatan es, dan kebersihan produsen yang buruk. Pada Peraturan BPOM RI No. 16 Tahun 2016 tentang kriteria mikrobiologi dalam pangan olahan, standar keberadaan Escherichia coli maupun bakteri coliform pada air yang dikonsumsi adalah tidak terdeteksi/250 mL. Kecamatan Grogol Petamburan merupakan lokasi dimana sebagian mahasiswa Fakultas Kedokteran dan Ilmu Kesehatan Ukrida tinggal, oleh sebab itu penulis tertarik melakukan penelitian ini. Penelitian bertujuan untuk mendeteksi ada tidaknya bakteri coliform pada sajian es batu di tempat makan tenda di Kecamatan Grogol Petamburan. Penelitian menggunakan metode studi deskriptif observatif. Sampel yang diambil adalah es batu yang dijual di tempat makan tenda di daerah Kecamatan Grogol Petamburan. Metode TPC (Total Plate Count) dan MPN (Most Probability Number)/APM (Angka Paling Mungkin) digunakan untuk mendeteksi ada tidaknya bakteri coliform. Dari sepuluh sampel es batu yang diambil, didapatkan hasil bahwa seluruh sampel es batu terkontaminasi oleh bakteri coliform dan fecal coliform. Simpulan yang dapat diambil adalah seluruh sampel es batu yang diambil dalam penelitian ini tidak layak untuk konsumsi berdasarkan syarat mikrobiologi yang telah ditentukan.

Efektivitas Metode Praktikum Indikator asam Basa Berbasis Contextual Teaching Learning ( CTL ) terhadap Hasil Belajar Siswa Kelas XI SMA Negeri 7 Pontianak

This research is motivated by the low learning outcomes of students of class XI IPA of SMA Negeri 7 Pontianak in learning chemistry, especially indicator theory sub material. This study aims to determine the learning outcomes between students who are taught using the Acid Base Indicator Practicum Method Based on Contextual Teaching Learning (CTL) and students who are taught with the Discovery Learning model based on practicum. This study uses Intact Group Comparison Design with research subjects of 15 control class students and 16 experimental class students. Data were collected using direct communication techniques: interview sheets, measurement techniques, and direct observation techniques, observation sheets and data collection tools using learning outcomes tests (pretest and posttest). The results of the average pretest and posttest of the control class were 35.1 and 66.1 respectively, the average pretest and posttest of the experimental class were 36.9 and 74.5. Learning outcomes data using the Mann Whitney U-test obtained learning outcomes with a probability number, i.e. P value (0.644)> α (0.05). This means that there are differences in student learning outcomes between the control class and the experimental class. Thus the acid-base indicator practicum method (CTL) gives the Effect Size obtained a value of 0.78 effectiveness of 75.80%. This means that there are differences in student learning outcomes between the control class and the experimental class. Thus the acid-base indicator practicum method (CTL) gives the Effect Size obtained a value of 0.78 effectiveness of 75.80%. This means that there are differences in student learning outcomes between the control class and the experimental class. Thus the acid-base indicator practicum method (CTL) gives the Effect Size obtained a value of 0.78 effectiveness of 75.80%.

KEEFEKTIFAN BIMBINGAN KELOMPOK COGNITIVE BEHAVIOR DALAM MEREDUKSI POLA PIKIR NEGATIF SISWA SMK

This study aims to examine the effectiveness of cognitive behavior group guidance in reducing the negative mindset of vocational students. The study was carried out starting from February to July 2018, which took place at the SMK Kepuhdoko Tembelang Jombang. This study used an experimental design with the design of the Pretest and Posttest Design Group. Data were analyzed by Paired Sample Test t-test, obtained the result of tcount was 6,500 and probability number (Sig. (2-tailed) was 0.001 with df = 5. Then the results were compared with the ttable at a significant level of 5% test 2 parties with df = 5, so that the ttable is 2.571 or 6,500> 2,571. The probability value obtained is 0.001> 0.005, so it can be concluded that cognitive behavior group guidance is effective in reducing the negative mindset of vocational high-school students based on the results of the research recommended for teacher`s guidance and counseling. Applying cognitive-behavioral group guidance as one of the alternative help in reducing the negative mindset of high-school students. Furthermore, researchers can use the results of this study to be used as a reference related to cognitive behavior group guidance, and further researchers can use research designs other than one group pretest and posttest design, for example time series design and n single-subject design. References Arikunto, S. (2010). Penelitian suatu pendekatan praktik edisi revisi. Jakarta: PT. Rineka Cipta. Depdiknas. (2012). Dokumen kurikulum 2013. Jakarta: Kemendikbud. Dewi, S., Tobing, D. H., & Hizkia, D. (2014). Kebermaknaan hidup pada anak pidana di Bali. Jurnal Psikologi Udayana, 1(2), 322-334. Elfiky, I. (2013). Terapi berpikir positif. Jakarta: Penerbit Zaman. Habsy, B. A. (2017a). Model konseling kelompok cognitive behavior untuk meningkatkan self esteem siswa SMK. Perspektif Ilmu Pendidikan, 31(1), 21-35. doi: https://doi.org/10.21009/PIP.311.4 Habsy, B. A. (2017b). Filosofi ilmu bimbingan dan konseling Indonesia. Jurnal Pendidikan (Teori dan Praktik), 2(1), 1-11. doi: http://dx.doi.org/10.26740/jp.v2n1.p1-11 Habsy, B. A. (2018a). Konseling rasional emotif perilaku: sebuah tinjauan filosofis. Indonesian Journal of Educational Counseling, 2(1), 13-30. doi: https://doi.org/10.30653/001.201821.25 Habsy, B. A. (2018b). Model bimbingan kelompok PPPM untuk mengembangkan pikiran rasional korban bullying siswa SMK etnis Jawa. Jurnal Pendidikan (Teori dan Praktik), 2(2), 91-99. doi: http://dx.doi.org/10.26740/jp.v2n2.p91-99 Hurlock, E. B. (1966). Adolescent development (3rd ed.). New York, NY, US: McGraw-Hill. Mardhika, R. (2016). Hubungan pola pikir negatif dan kecemasan terhadap cara berbicara di depan umum mahasiswa program studi pendidikan kepelatihan olahraga. Jurnal Buana Pendidikan, 12(22), 88-98. http://jurnal.unipasby.ac.id/index.php/jurnal_buana_pendidikan/article/view/620 Matson, J. L., & Ollendick, T. H. (1988). Enhancing children's social skills. Oxpord: Pergamon Press. Muqodas, I. (2011). Cognitive-behaviour theraphy: Solusi pendekatan praktek konseling di Indonesia. Diakses dari http://idatmuqodas.blogspot.com/2012/02/cognitive-behaviortherapy-solusi.html Rini, J. F. (2002). Memupuk rasa percaya diri. Jakarta: Team e-Psikologi. Rusydi, A. (2012). Husn Al-Zhann: Konsep berpikir positif dalam perspektif psikologi islam dan manfaatnya bagi kesehatan mental. Jurnal Proyeksi, 7(1), 1-31. doi: http://dx.doi.org/10.30659/p.7.1.1-31 Santrock, J. W. (2003). Perkembangan remaja. Jakarta: Erlangga. Sary, Y. N. E. (2017). Perkembangan kognitif dan emosi psikologi masa remaja awal. J-PENGMAS (Jurnal Pengabdian kepada Masyarakat), 1(1), 6-12. http://ojshafshawaty.ac.id/index.php/jpengmas/article/view/1 Siregar, E. Y. (2013). Penerapan cognitive behavior therapy (cbt) terhadap pengurangan durasi bermain games pada individu yang mengalami games addiction. Jurnal Psikologi, 9(1), 17-24. doi: http://dx.doi.org/10.24014/jp.v9i1.136 Sugiyono. (2013). Metode penelitian pendidikan pendekatan kuantitatif, kualitatif, dan R&D. Bandung: Alfabeta. Wati, S. (2017). Efektivitas pendekatan konseling kognitif perilaku dalam mengatasi dampak negatif alat komunikasi (smartphone) pada peserta didik kelas XI SMK PGRI 4 Bandar Lampung tahun 2015-2016. Tesis. Lampung: IAIN Raden Intan Lampung.

Review on The Performance of Softened Two-Bit Hard Combination Scheme for Cooperative Spectrum Sensing

This paper measures the performance of cooperative spectrum sensing, over Rayleigh fading channel and additive white Gaussian noise, based on softened two-bit hard combination scheme. Two measures based on energy detection are considered including effect of false alarm probability, and effect of number of users. Simulation results show that the detection probability increases with the increase of false alarm probability, number of users, and signal-to-noise-ratio.