Designing Precoding and Receive Matrices for Interference Alignment in MIMO Interference Channels

Interference is a key bottleneck in wireless communication systems. Interference alignment is a management technique that align interference from other transmitters in the least possibly dimension subspace at each receiver and provides the remaining dimensions for free interference signal. An uncoordinated interference is an example of interference which cannot be aligned coordinately with interference from coordinated part; consequently, the performance of interference alignment approaches are degraded. In this paper, we propose a rank minimization method to enhance the performance of interference alignment in the presence of uncoordinated interference sources. Firstly, to obtain higher multiplexing gain, a new rank minimization based optimization problem is proposed; then, a new class of convex relaxation is introduced which can reduce the optimal value of the problem and obtain lower rank solutions by expanding the feasibility set. Simulation results show that our proposed method can obtain considerably higher multiplexing gain and sum rate than other approaches in the interference alignment framework

Pengembangan Pendekatan Kontekstual terhadap Hasil Belajar Renang Gaya Dada

Tujuan penelitian ini untuk meningkatkan Hasil Belajar Renang Gaya Dada Pada Siswa Kelas XI SMAN 11 Jambi . Dan membuat siswa lebih aktif dalam pembelajaran. Metode penelitian yang digunakan yaitu Penelitian Tindakan dengan pengambilan data kualitatif dan kuantitatif. Penelitian melibatkan 2 kolabolator dan dilakukan sebanyak 2 siklus, masing-masing siklus terdiri dari 4 kali pertemuan. Kondisi awal siswa yang diteliti belum bisa berenang dengan baik dan kurang aktif dalam pembelajaran. Hasil dari siklus pertama sebagai berikut: 1) Guru memberikan pembelajaran yang dapat memotivasi siswa sesuai dengan rencana penelitian dan hasilnya adalah 17 siswa aktif dan senang dengan kegiatan pembelajaran, 10 Siswa kurang aktif, dan 3 siswa pasif. 2) Nilai rata-rata siswa pada siklus 1 dalam pembelajaran renang gaya dada adalah 17,16. Hasil dari siklus Kedua yang merupakan refleksi dari siklus pertama sebagai berikut: 1) Guru memberikan pembelajaran yang dapat memotivasi siswa sesuai dengan rencana penelitian dan hasilnya adalah 26 siswa aktif dan senang dengan kegiatan pembelajaran, 3 Siswa kurang aktif, dan 1 siswa pasif. 2) Nilai rata-rata siswa pada siklus 2 dalam pembelajaran renang gaya dada adalah 19, 06. Hasil akhirnya ada peningkatan siswa yang aktif dalam pembelajaran dan penurunan siswa yang kurang aktif serta pasif. Peningkatan juga terdapat pada nilai rata-rata kelas di siklus ke dua. Maka Pendekatan Kontekstual yang di terapkan dalam pembelajaran renang gaya dada dapat meningkatkan hasil belajar renang gaya dada

Unsafe interactions in dating apps

Abstract. Online dating is a way for people to meet and connect with potential romantic partners over the internet. It is usually done through a dating website or a dating app, which allows users to create a profile, browse and view other users’ profiles, and communicate with potential matches. Online dating can be a convenient and effective way to find a partner, especially for people who are busy or have difficulty meeting potential partners through traditional means. However, as every technology comes with its pros and cons, the same is with online dating. Risks associated with online dating include, for example, scamming, catfishing, and other forms of online fraud. The thesis focuses on exploring unsafe interactions among dating app users. The research questions considered for this thesis are: 1) What kind of unsafe interactions users report facing in dating apps? 2) How have the reported unsafe interactions been solved? To see what kind of unsafe interactions users have had through dating apps, the data has been collected through a discourses survey. The study employs “Discourses survey" strategy to analyze complex social actions, which identifies public discourse on a specific subject without researcher bias. The data was collected using predefined keywords related to unsafe interactions in dating apps in the following news databases: CNN, BBC, CNBC, DailyMail, FoxNews, and TheGuardian. The searches in the above databases resulted in 391 relevant research articles. The articles were coded into the following categories of unsafe online interactions using a predefined codebook: Information Breaches, Online harassment, Sexual solicitations, Exposure to explicit content, and different Crimes. Each category further included several subcodes. Most of the unsafe interactions reported in the news databases and included in the dataset were related to different crimes (81%), such as different scams, sexual assaults, murder, or fraud. The least were related to exposure to explicit material (0%). Overall, 58% of the incidents in the dataset were resolved most often by the law enforcement agencies such as courts and police, while 42% remained unresolved. For crimes, the resolved rate was slightly higher than the average at 61%, while 39% remained unresolved. Although dating apps offer safety features and detailed guidelines to ensure users’ safety, from the data, it is clear dating apps could take more steps to eradicate unsafe user interactions and help support users in case such interactions happen. Regarding this, I offer some recommendations concerning how to promote a safe environment for online dating. Thus, the main contribution of my thesis is to identify what kind of unsafe interactions are reported on the English-speaking open internet concerning dating apps and identify if these interactions usually get solved. I will also offer a discussion on whether the currently implemented safety features answer these concerns

Management and Complications of Arnold Chiari Hydrocephalus at Tertiary Health Care Center

Objective: to investigate the role of CT and MRI in diagnosis of Arnold chiari malformation of hydrocephalus and its treatment with VP shunt along with complications. Study Design: Prospective study Place and duration: Department of Neurosurgery, DG Khan Medical College from May 4, 2018 to May 4, 2019. Methodology: Fifty patients of congenital hydrocephalus who were not treated previously were selected. Detailed history about disease and clinical examination of patients was performed. Follow ups were done at neurosurgery OPD. SPSS software for data analysis was used and mean ± SD, frequency and percentages were calculated for variables. P value ≤0.05 was considered as significant. Results: Treatment in case of congenital hydrocephalus as VP shunt, intra-aneurysmal coiling, excision of meningomyelocele with VP shunt and suboccipital craniectomy + upper cervical laminectomy (scucl) were observed as 10%, 6%, 8% and 8% respectively.  Twelve percent of patients were not treated. Conclusion: CT and MRI are the main diagnostic tools for diagnosis of Arnold chiari malformation and VP shunt is the treatment of choice. Among complications of VP shunt infection of shunt and shunt block are the main complications

Reforming Farmland and Rangeland at Tharparkar: Suggested Implementations for Income Generation.

This paper is the analysis of farming and rangeland of rain-fed area of Tharparkar and it is desert area, but the concept is general and applicable for every part of the world’s desert where agriculture is rain-fed dependant. It is disadvantaged area of Pakistan. Its’ main source of income is livestock, people like agriculture, but agriculture is not sustainable source of income due to shortage of rainfall. There is need of awareness of reforming of farmland and rangeland; fencing is the best way for farmland reform. Only this practice can help the farmers supplying the fodder in drought conditions. Rangeland also should be conserved for the natural vegetation providing, fodder. Increase in livestock would lead Thar to agro-based industrial economy. We should get the lesson from the example of Denmark where previous condition was like Tharparkar.Farming, Rain Fed, Livestock, Farmland, Rangeland, Forecast, Reform, Natural-Vegetation, Sustainable, Organization.

A New Weighting Scheme in Weighted Markov Model for Predicting the Probability of Drought Episodes

Drought is a complex stochastic natural hazard caused by prolonged shortage of rainfall. Several environmental factors are involved in determining drought classes at the specific monitoring station. Therefore, efficient sequence processing techniques are required to explore and predict the periodic information about the various episodes of drought classes. In this study, we proposed a new weighting scheme to predict the probability of various drought classes under Weighted Markov Chain (WMC) model. We provide a standardized scheme of weights for ordinal sequences of drought classifications by normalizing squared weighted Cohen Kappa. Illustrations of the proposed scheme are given by including temporal ordinal data on drought classes determined by the standardized precipitation temperature index (SPTI). Experimental results show that the proposed weighting scheme for WMC model is sufficiently flexible to address actual changes in drought classifications by restructuring the transient behavior of a Markov chain. In summary, this paper proposes a new weighting scheme to improve the accuracy of the WMC, specifically in the field of hydrology

Kesiapan Pustakawan Menghadapi Penerapan ASEAN Economic Community (Aec) Tahun 2015

Salah satu poin kesepakatan AEC (Asean Economic Community) atau Masyarakat Ekonomi Asean(MEA) 2015 adalah aspek tenaga kerja terampil yang tidak lagi dibatasi dengan batas-batas negaradalam persaingan pasar tenaga kerja. Profesionalisme dan kompetensi SDM menjadi barometerdalam persaingan, termasuk di dalamnya tenaga pustakawan. Beberapa tantangan profesipustakawan di Indonesia dalam menghadapi AEC adalah adanya ketimpangan jumlah pustakawanyang masih sangat kurang dibanding dengan jumlah lembaga perpustakaan yang ada, pustakawanyang tersertifikasi masih sangat kurang, dan citra perpustakaan dan pustakawan belum terbangundengan baik. Pengembangan dan pembinaan Pustakawan yang berdaya saing menjaditanggungjawab lembaga-lembaga terkait, diantaranya Perguruan Tinggi, Perpusnas, pemerintahdaerah, organiasi profesi, lembaga sertifikasi, dan lembaga-lembaga lainnya berafiliasi dengankepustakawanan. Lembaga dan organisasi tersebut harus bersinergi memikirkan konsep yangstrategis, terpadu dan menyeluruh terhadap kebijakan pengembangan SDM perpustakaan yangberkesinambungan baik dari segi jumlah dan kualitas. Pustakawan yang memiliki keunggulankompetitif adalah pustakawan profesional dan mempunyai kompetensi, berupa tenaga kerja terampilyang produktif, inovatif, kreatif, mempunyai semangat kerja, dan loyal terhadap organisasi ataulembaga. Hal tersebut dapat diperoleh melalui pendidikan formal, pelatihan maupun daripengalaman kerja

Studi Kelayakan Instalasi Penerangan Rumah Di Atas Umur 15 Tahun Terhadap Puil 2000 Di Desa Pancur Kecamatan Pancur Kabupaten Rembang

— Instalasi listrik yang dipakai secara terus menerus dalam kurun waktu yang lama akan mempengaruhi kehandalan kerja dari instalasi tersebut. Yang termasuk dalam kehandalan kerja adalah kualitas dan kuantitas dari instalasi yang dipasang. Baik cara pemasangan maupun bahan material yang dipakai akan mengalami penurunan. Persyaratan Umum Instalasi Listrik (PUIL) tahun 2000 merupakan acuan utama tentang layak tidaknya instalasi listrik. Dalam PUIL 2000 tersebut juga menerangkan bahwa kelayakan instalasi listrik perlu diuji ulang secara periodik. Selain itu juga karena faktor pekembangan penggunaan beban, Perubahan yang dilakukan pemilik instalasi akan banyak berpengaruh terhadap kelayakan instalasi listrik penerangan rumahnya. Permasalahan yang diangkat dalam penelitian ini adalah bagaimana tingkat kelayakan instalasi listrik penerangan rumah yang telah dipakai lebih dari 15 tahun di Desa Pancur Kecamatan Pancur Kabupaten Rembang. Dan faktor-faktor apa saja yang menyebabkan tingkat kelayakan tersebut dibandingkan dengan PUIL 2000. Hal inilah yang menjadi tujuan dalam penelitan ini. Yaitu, mengetahui tingkat kelayakan dan faktor-faktor yang mempengaruhi kelayakan instalasi penerangan rumah. Adapun manfaat dari penelitian ini adalah untuk memberikan informasi tentang instalasi listrik penerangan rumah, kepada pihak yang membutuhkan. Metode yang digunakan dalam penelitian ini adalah metode dokumentasi dan observasi. Teknik analisis data dalam penelitian ini menggunakan teknik analisis data deskriptif. Keywords— Kelayakan instalasi, PUIL 200

Procyclical Monetary Policy and Governance

Weak governance adversely affects firm’s net worth and consequently the value of its collateral. This negative impact on the collateral reduces the external credit available for importing inputs constraining potential output. As a result, a stronger procyclical monetary policy stance is adopted for protecting the exchange rate and hence arresting the degradation in the collateral constraint.Collateral Constraints; Governance; Monetary Policy

Telaah Tentang Kibijakan Ujian Nasional dan Kinerja Sistem Pendidikan Nasional

Kinerja Sistem Pendidikan Nasional (SPN) dalam kurun waktusepuluh tahun terakhir menunjukkan kegagalan demi kegagalan. Data dariUnited Nations Development Programme (UNDP) yang memantau IndeksPembangunan Manusia atau Human Development Index (HDI) sepertiyang terpublikasi secara luas bahwa posisi Indonesia diantara 174 negarapada tahun 1996 berada pada peringkat 102; tahun 1999 peringkat 105;dan tahun 2000 pada peringkat 109, kemudian tahun 2004 turun lagi keperingkat 111 dari 174 negara. Secara umum mutu proses belajarmengajaryang tergelar kurang menggembirakan oleh karena prosespendidikan telah terkebiri menjadi “perolehan informasi” dengan sistemtagihan berjangka pendek.Ketidakhirauan SPN terhadap praksis penerusan informasiberakibat lebih jauh lagi dan merosot menjadi konteks pemberitaan isi bukuteks (content transmission), lalu diperparah lagi dengan kebijakan evaluasiyang dikenal dengan istilah UN (Ujian Nasional). Secara kognitif modelevaluasi UN tersebut tidak dapat memfasilitasi perkembanganintelektualitas yang baik (authentic ability), karena tuntutannya bersifattebak-tebakan, sehingga pebelajar cenderung hanya mengerahkankemampuan artifisialnya, bukan kemampuan autentik. Bahkan lebih celakalagi jika untuk meraih prosentase kelulusan dibentuk “tim sukses” yangberoperasi secara ilegal