Time for pulse traversal through slabs of dispersive and negative (ϵ\epsilon, μ\mu) materials

The traversal times for an electromagnetic pulse traversing a slab of dispersive and dissipative material with negative dielectric permittivity ($\epsilon$) and magnetic permeability ($\mu$) have been calculated by using the average flow of electromagnetic energy in the medium. The effects of bandwidth of the pulse and dissipation in the medium have been investigated. While both large bandwidth and large dissipation have similar effects in smoothening out the resonant features that appear due to Fabry-P\'{e}rot resonances, large dissipation can result in very small or even negative traversal times near the resonant frequencies. We have also investigated the traversal times and Wigner delay times for obliquely incident pulses and evanescent pulses. The coupling to slab plasmon polariton modes in frequency ranges with negative $\epsilon$ or $\mu$ is shown to result in large traversal times at the resonant conditions. We also find that the group velocity mainly contributes to the delay times for pulse propagating across a slab with n=-1. We have checked that the traversal times are positive and subluminal for pulses with sufficiently large bandwidths.Comment: 9 pages, 9 figures, Submitted to Phys. Rev.

Penyelesaian Sengketa dengan Mediasi melalui Badan Pertanahan Nasional antara PT. Meridan Sejati Surya Plantation dengan Kelompok Tani Tunas Jaya di Kabupaten Siak Provinsi Riau.

Mediation is a form of dispute relation that bring the two sides that there is disagreement between the two parties in order to find a solution or a way out of the problem they face. This mediaton where both parties may issue his opinion of each of the existing problems and their expected path of peace between the two sides.Problems that occur between PT.Meridan with farmer groups shoots Jaya is done through legal channels is court, where PT.Meridan not willing to serve the demands of the farmers victoriuos through mediaton but by taking legal action in court.This type of research is descriptive sociological research conducted in PT.Meridan and farmer groups shoots victorious on land parcels HGU using pimary and secondary data. Of research and discussion lead to the conclusion that PT. Meridan stated that the land they have been obtained by lawful and has made payment of compensation to the land of people who are in a location HGU issued authorized officer

Building Content Distribution Network: A solution to achieve qos on internet

Content Distribution Network (CDN) involves several technologies, rather than just one technology working alone. CDN is another method to provide Quality of Service (QoS) to different applications and deliver different types of media content to end-users over the Internet. Since it is important to improve Internet performance in recent years, CDN has been an approach providing better Internet services. There are a number of technologies and components included in the CDN, and also several challenges needed to be considered for its performance. This paper presents basic components of CDN and summarizes the challenges and issues analyzing the development of CDNs towards QoS. © 2011 IEEE

Advanced Cogeneration Technology Economic Optimization Study (ACTEOS)

The advanced cogeneration technology economic optimization study (ACTEOS) was undertaken to extend the results of the cogeneration technology alternatives study (CTAS). Cost comparisons were made between designs involving advanced cogeneration technologies and designs involving either conventional cogeneration technologies or not involving cogeneration. For the specific equipment cost and fuel price assumptions made, it was found that: (1) coal based cogeneration systems offered appreciable cost savings over the no cogeneration case, while systems using coal derived liquids offered no costs savings; and (2) the advanced cogeneration systems provided somewhat larger cost savings than the conventional systems. Among the issues considered in the study included: (1) temporal variations in steam and electric demands; (2) requirements for reliability/standby capacity; (3) availability of discrete equipment sizes; (4) regional variations in fuel and electricity prices; (5) off design system performance; and (6) separate demand and energy charges for purchased electricity

Analisis Faktor-Faktor Keputusan Pembelian Petani Padi terhadap Produk Pestisida Nabati

Penggunaan pestisida kimia sangat tinggi dikalangan petani. Penyemprotan dan pencampuran pestisida merupakan hal biasa dengan frekuensi 3-7 hari sekali. Pestisida memiliki bahan aktif toxic atau racun yang sangat berbahaya bagi kesehatan manusia. Banyaknya permasalahan serta dampak negatif yang ditimbulkan digunakan pestisida alternative yang ramah lingkungan yaitu pestisida nabati. Oleh karena itu, pestisida nabati sangat diharapkan sebagai bahan pelengkap dan pengganti untuk pestisida kimia. Penelitian ini memiliki tiga tujuan yaitu mengetahui kuantitas dan kualitas pestisida nabati yang digunakan petani padi, menganalisis pengaruh faktor-faktor keputusan pembelian secara parsial dan simultan serta menganalisis faktor yang paling dominan terhadap keputusan petani dalam membeli pestisida nabati. Metode penentuan lokasi dilakukan di Desa Ngasem, Kecamatan Ngajum, Kabupaten Malang. Metode penentuan responden menggunakan non probability sampling yatu memilih responden yang bersedia melakukan wawancara, pengisian kuisioner dan bercerita tentang pertanian di daerah tersebut. Metode pengumpulan data primer melalui kuisioner dan wawancara serta data sekunder melalui BPS dan literatur. Metode analisis data menggunakan model analisis logit. Hasil penelitian menunjukkan faktor harga, ketersediaan produk, efektifitas dan kesadaran petani berpengaruh dan berpeluang dalam keputusan pembelian. Sementara itu, faktor usia, pendapatan dan pendidikan tidak berpeluang dan tidak berpengaruh dalam keputusan pembelia

ORGANIZATION ENGAGEMENT SEBAGAI MEDIATOR HUBUNGAN CALLING MEANING OF WORK DAN PSYCHOLOGICAL WELL-BEING (ENVIRONMENTAL MASTERY) (STUDI KASUS: PEKERJA PEREMPUAN): ORGANIZATION ENGAGEMENT AS A MEDIATOR ON RELATIONSHIP BETWEEN CALLING MEANING OF WORK AND PSYCHOLOGICAL WELL-BEING (ENVIRONMENTAL MASTERY) (CASE STUDY: WOMEN WORKER)

This study aims to determine the effect of callings meaning of work on environmental mastery (one of the dimensions of psychological well-being) mediated by organizational engagement on the case of women workers in the garment industry at the Nusantara Industrial Bonded Zone (KBN). There were 111 participants, woman workers with a minimum of one year lenght of service. Data was collected through the environmental mastery adaptation scale instrument from Ryff (1989) (RPWBS) to measure Environmental Mastery, Amy Wrzesniewski's (1997) Work-Life Questionnaire and the scale of Organization Engagement from Saks (2006). Hypotheses are tested by Structural Equation Modeling (SEM), analyzed by Lisrel 8.7 software. The results showed that the model was declared fit, Organization engagement became the "full mediator" relationship between Callings (meaning of work) and Environmental Mastery (psychological well-being) wuth Chi-square 20.81; df = 24; p.value = 0.65003; RMSEA = 0,000. The managerial implication of this finding is that as long as the garment industry still relies on the role of women workers, management needs to improve a safe and comfortable work environment, and place leaders or supervisors who better understand and respect woman workers in their role in supporting organizational performance. Keywords: callings-meaning of work, organization engagement, environmental mastery indonesian, woman worker, garment industr

Peran Tokoh Masyarakat dalam Pembentukan Kepribadian Remaja di Desa Penyeladi Kecamatan Kapuas Kabupaten Sanggau

Masalah umum dalam penelitian ini adalah bagaimana peran tokoh masyarakat dalam pembentukan kepribadian remaja di Desa Penyeladi Kecamatan Kapuas Kabupaten Sanggau. Masalah dalam penelitian ini adalah 1. bagaimana peran tokoh masyarakat sebagai motivator dalam pembentukan kepribadian remaja 2. bagaimana peran tokoh masyarakat sebagai pembimbing dalam pembentukan kepribadian remaja 3. kepribadian remaja yang bagaimana yang dapat dibentuk dari para tokoh tersebut. Pendekatan yang digunakan dalam penelitian ini adalah pendekatan kualitatif dengan metode deskriptif. Teknik yang digunakan dalam pengumpulan data yaitu observasi langsung, komunikasi langsung dan dokumenter dengan alat pengumpulan data pedoman wawancara, pedoman observasi, catatan lapangan dan dokumentasi. Sumber data dalam penelitian ini berupa data primer dan data sekunder. Hasil penelitian menunjukan bahwa peran tokoh masyarakat sebagai seorang motivator dan pembimbing, tentunya memiliki caranya masing-masing dalam memberikan motivasi dan bimbingan guna untuk membentuk kepribadian remaja.Sedangkan sebagai pembimbing keempat tokoh masyarakat tersebut memberikan bantuan kepada remaja tersebut untuk dapat memahami dirinya, sehingga dia sanggup mengarahkan dirinya dan dapat bertindak dan berperilaku secara wajar sesuai dengan tuntutan dan keadaan di lingkungan. Kata Kunci : Peran Tokoh Masyarakat, Pembentukan Kepribadian Remaja Abstrac: A common problem in this research is how the role of community leaders in the formation of adolescent personality in the village Penyeladi Kapuas District of Sanggau. The problem in this research are: 1. how the role of community leaders as a motivator in the formation of adolescent personality 2. how the role of community leaders as a leader in the formation of adolescent personality 3. teens how personality can be formed from the figures. The approach used in this study is a qualitative approach with descriptive methods. Techniques used in data collection are direct observation, direct communication and file collection tools documentary with interview guidelines, observation guidelines, field notes and documentation. Sources of file in this study are primary file and secondary file. The results showed that the role of community leaders as a motivator and mentor, of course, have their own way in providing motivation and guidance in order to shape the personality teens. While as supervising four community leaders to provide assistance to the adolescent to be able to understand him, so that he could directing himself and can act and behave fairly in accordance with the demands and circumstances in the environment

Optimasi Loader Mortir 81 pada Panser Anoa Pindad dengan Menggunakan Metode Fuzzy Logic

Mortir adalah senjata artileri yang diisi dari depan, dan menembakkan munisi dengan kecepatan yang rendah, dengan jarak jangkauan dekat, dan perjalanan peluru yang tinggi lengkungan parabolnya. Sifat-sifat ini bertolak belakang dengan artileri besar, seperti meriam dan howitzer, yang minisinya bergerak dengan kecepatan tinggi, jarak jangkau yang jauh, dan lengkungan yang lebih rendah. Umumnya sebuah perangkat mortar moderen terdiri dari sebuah tabung di mana peluru mortar dijatuhkan kepada mekanisme penembakan yang meledakkan bahan kimia untuk melontarkannya. Dalam hal ini membutuhkan kecepatan pengisian munisi pada masing-masing alutsista yang digunakan, seperti contoh pada panser anoa yang akhir-akhir ini dibuat oleh PT pindad tetapi terdapat koreksi karena pengisian munisi mengurangi keamanan personil. Jadi jika personil akan mengisi munisi, maka personil harus keluar dari badan panser. Hal ini akan menyebabkan personil tidak aman atau tidak taktis karena dapat terbidik oleh musuh