87,323 research outputs found
Present Energy Metabolism and the Future of Renewables
No full textMetabolism refers to the process of energy and material flows required to sustain the structure of an organism, ecosystem, or socioeconomic system (such as an urban area). The study of energy metabolism of an economy is insightful on both a local scale (city, region, or country) and on a global scale (world economy). A key feature contributing to the complexity of socioecologic systems is feedback, manifest in the presence of cycles. Material cycles in ecological systems are closed: mass is conserved throughout all cyclic paths. Furthermore, the incoming solar energy is maximally dissipated throughout cycles. Ecological systems have developed intricate couplings in order to reduce or eliminate energy or material waste, in juxtaposition to economic systems. What makes then an economy so inefficient compared to nature? On a local scale, the study of metabolism indicates that cities or countries are not a self-sustaining systems: they draw materials, energy, and information from the surrounding ecological and economic environment. Cyclic metabolic paths in the world economy are typically strictly (anti)- correlated to oil price. As showed in this chapter, the percentage of cycled material in trade was negatively correlated to oil price; this anti(correlation) scoring from 85 to 62% between 1960 and 2011. This shows that world metabolism is remarkably connected to the price of oil. In the long run, world metabolism is correlated to oil price because of the architecture of trading relationships. With low oil prices, the productive chain tends to unfold across countries, whereas with high oil prices the productive chain tends to shrink. Constraints and impediments to the complete success of renewable energy sources (RES) over fossil fuels are therefore based on certain factors which can be determined from a metabolic analysis of the economy: (1) energy source intensity, (2) the nonfungibility of oil in the transport sector, and (3) scale of production. Each factor raises particular questions which will be answered in this chapter. For example: Is the scale of the present economy/society (cities, countries, or world) strictly dependent on the intensity of fossil fuels? Can these scales of processes be sustained with energy sources at a lower intensity? What is the appropriate feedback between the scale of ecosystem services and scale of governance? Is circular economy attainable at the scale of the present global economy? These questions will be addressed in the light of energy metabolism
Complexification in the Energiewende
No full textThe path toward a low-carbon economy takes three main parallel roads: the efficiency of energy conversion, the reduction of energy use and the substitution of fossil-fuels with renewable energy. This chapter will focus mainly on this latter aspect of the problem by analyzing how a transition toward renewable energy can pose a new challenge to economy and governance in terms of complexification of the system. The fate of renewable energy sources (RES) crucially depends on the power sector for electricity is still the main vector for renewable energy. The main features of the ongoing transition toward a renewable energy system are: (1) lower intensity of energy sources; (2) high efficiency of conversion; (3) temporal discontinuity; (4) free access to local and more decentralized energy sources; (5) dramatic change in the economic concept of energy scarcity; (6) new, leading role of the network. Is this process leading to a higher complexification? To answer to this question, we will analyze this energy transition in the light of the concept of complexity and sustainability by looking at the history of economic development and societal change prompted by new energy sources and new form of energy conversions. A particular emphasis will be given to the case study of Germany and recent thrust toward an energiewende. Finally, it will be advocated the need for a new market of power aimed at decoupling the sites of electricity inlet and outlet overcoming the impending limits of RES energy that curbs their development
System sustainability
No full textThe concept of sustainability can only be conceived in a systemic framework. No system considered in isolation from its environment (latu sensu) can act sustainably, therefore sustainability connotes a system within its context. Some crucial features are identified here to describe the concept and avoid misuse of the term. These are time, biophysical limits and relationships, according to which a system, project or action can be considered sustainable. Nature is the quintessence of sustainability. Human systems must obey the laws of nature and follow nature’s way in order to be sustainable. Sustainability traditionally conceives the economic system as being within the social system, which is in turn included and supported by the environment as resource and service provider and waste absorber. This organic view is composed of networks that connect these three spheres and the elements within them. Many approaches embrace a systemic view to identify and evaluate the sustainability of a system and to encompass the many dimensions that characterize this concept. Ecosystem services, the energy-food-water nexus, planetary boundaries defining the safe operating space for humanity and UN Sustainable Development Goals are only a few examples. Here we also shed light on the Input-State-Output approach
Analisis penilaian kinerja karyawan dengan metode balanced scorecard sebagai upaya peningkatan daya saing BMT Al Fath
No full textSelama ini pengukuran kinerja yang banyak digunakan oleh perusahaan adalah pengukuran tradisional, yang hanya menitik beratkan pada ukuran keuangan. Ukuran keuangan saja tidak dapat memberikan gambaran yang riil mengenai keadaan perusahaan karena bersifat perkiraan. Pengukuran keuangan dari aspek keuangan mudah dimanipulasi sesuai dengan kepentingan manajemen sehingga hasil pengukuran kinerja tradisional semacam ini kurang tepat jika diterapkan dalam sebuah Lembaga Keuangan Syariah. Tujuan penelitian ini Untuk menganalisis penilaian kinerja karyawan dengan metode Balanced Scorecard pada BMT Al Fath, mengetahui pengaruh ketaatan terhadap peningkatan daya saing BMT Al Fath dan mengetahui pengaruh penilaian kinerja karyawan dengan menggunakan metode Balanced Scorecard dan ketaatan terhadap syariah terhadap peningkatan daya saing BMT Al Fath. penelitian ini menggunakan penelitian kuantitatif. Sumber data dalam penelitian ini adalah data primer yang berasal dari kuesioner dan wawancara dengan pihak BMT Al Fath, sedangkan data sekunder berasal dari dokumen BMT Al Fath berupa visi misi, tujuan, produk, dan struktur organisasi. Alat analisis yang digunakan adalah deskriptif kuantitatif, uji instrumen penelitian dengan uji validitas, reliabilitas, multikolinieritas, heteroskedastisitas, autokolerasi, normalitas, regresi berganda, uji t, uji f, dan koefesien determinasi. Sampel dalam penelitian ini adalah anggota dan karyawan BMT Al Fath. Nilai t hitung untuk variabel penilaian kinerja karyawan dengan menggunakan metode Balanced Scorecard adalah 2,433. Jadi nilai t hitung lebih besar dari nilai t tabel (2,433 >1,701). Artinya variabel penilaian kinerja dengan menggunakan metode Balanced Scorecard berpengaruh secara parsial terhadap peningkatan daya saing BMT. Maka hasil penelitian tidak dapat menolak hipotesis pertama yang menyatakan “terdapat pengaruh signifikan antara penilaian kinerja dengan menggunakan metode Balanced Scorecard terhadap peningkatan daya saing BMT Al-Fath” Nilai t hitung untuk variabel ketaatan terhadap syariah adalah 2,414. Jadi nilai t hitung lebih besar dari nilai t tabel (2,414 >1,701). Artinya variabel ketaatan terhadap syariah berpengaruh secara parsial terhadap peningkatan daya saing BMT Al-Fath. Maka hasil penelitian tidak dapat menolak hipotesis kedua yang menyatakan “terdapat pengaruh signifikan antara ketaatan terhadap syariah dengan peningkatan daya saing BMT Al-Fath” nilai F hitung sebesar 7,418 sedangkan nilai F tabel untuk pembilang (df1)= k-1=2-1=1 dan penyebut (df2)=30-3=27 dengan taraf signifikan 5% adalah 4,21 dengan demikian nilai F hitung lebih besar dengan nilai F tabel (7,418 > 4,21) dengan nilai probabilitas sebesar 0,003, karena nilai probabilitas lebih kecil dari 0,05 maka H3 diterima dan menolak H0. Jadi dapat dikatakan bahwa terdapat pengaruh secara simultan yang signifikan antara penilaian kinerja dengan menggunakan metode Balanced Scorecard dan ketaatan terhadap syariah dengan peningkatan daya saing BMT Al-Fath
Emergy and sustainability
No full textThis article presents emergy evaluation and its application to ecosystems and territorial systems. The emergy approach is an environmental accounting methodology that can be used to assess natural inflows and services within a system. This ecological indicator was inspired by the food chain and the observations that energy quality increases along the chain while energy content decreases. Emergy analysis is able to differentiate between the various units (processes) of an ecosystem. It highlights processes that are sustained by low-quality energy and processes that need high-quality fluxes. The method is an embodied energy analysis that uses solar energy as reference. By evaluating natural resources on a common basis, emergy analysis has proved useful at the interface between human and natural systems and for assessing the impact of human activity on ecosystems. Based on a rigorous algebra, emergy evaluation provides indicators to measure sustainability
Pengaruh Kualitas Pelayanan dan Etika Kerja Islam Terhadap Kepuasan Anggota di KBMT Al-Fath
No full textAde Oktaviani Muis, 1608203137, “Pengaruh Kualitas Pelayanan dan Etika Kerja Islam Terhadap Kepuasan Anggota di KBMT Al-Fath”. Skripsi 2020.
Baitul mal wat tamwil (BMT) merupakan lembaga keuangan mikro pendukung kegiatan ekonomi masyarakat bawah dan kecil yang dijalankan berdasarkan syariat Islam. Dalam rangka memenuhi kebutuhan masyarakat, kualitas pelayanan dan etika kerja Islam yang sesuai syari’ah diharapkan mampu mendatangkan kepuasan bagi anggota BMT. Penelitian ini bertujuan untuk mengetahui pengaruh kualitas pelayanan dan etika kerja Islam kaaryawan terhadap kepuasan anggota KBMT Al-Fath.
Penelitian ini menggunakan metode penelitian kuantitatif, dan teknik pengambilan data dengan cara observasi, penyebaran angket (kuesioner), dan wawancara. Teknik pengambilan sampel yang digunakan dalam penelitian ini adalah non probability sampling dengan menggunakan accidental sampling. Jumlah sampel yang digunakan adalah sebanyak 66 responden, yaitu anggota KBMT Al-Fath. Analisis data yang digunakan yaitu teknik regresi linear berganda, uji hipotesis dan menggunakan bantuan SPSS versi 21.0.
Berdasarkan dari hasil penelitian ini, diperoleh hasil hipotesis secara simultan (uji F) didapatkan F hitung sebesar 103,180 dengan nilai signifikansi (P-value) = 0,000. Maka nilai Fhitung 103,180 > Ftabel sebesar 2,74 dan Sighitung (0,000) ttabel 1,668 dan Sighitung 0,001 ttabel 1,668 dan Sighitung 0,001 < 0,05, hal ini berarti variabel etika kerja Islam berpengaruh secara signifikan terhadap kepuasan anggota KBMT Al-Fath.
Kata kunci : Kualitas Pelayanan, Etika Kerja Islam, Kepuasan
PENGARUH SUPERVISI DAN MOTIVASI BERPRESTASI TERHADAP KINERJA GURU PADA SD DAN SMP AL FATH CIRENDEU
No full textPenelitian ini bertujuan untuk mengetahui pengaruh supervisi dan motivasi berprestasi terhadap kinerja guru pada SD dan SMP AL Fath Cirendeu. Penelitian ini menggunakan metode explanatory research, dan pengujian Hipotesis. Dengan teknik survei, menyebar kuesioner dengan skala Likert. Teknik penentuan sampel dengan sampel jenuh dengan jumlah 61 responden. Teknik analisis data yang digunakan Analisis deskriptif dan Analisis statistik inferesial yaitu : 1. Uji Validitas dan Reliabilitas, 2. Analisi Regresi Berganda, 3. Koefisien Determinasi (R2), 4. Pengujian Hipotesis dengan Uji Parsial (uji t) dan Uji Simultan (uji F). Hasil Pengujian dan analisisnya adalah sebagai berikut : Terdapat pengaruh positif dan signifikan antara supervisi terhadap kinerja guru pada SD dan SMP AL Fath Cirendeu, dengan korelasi positif 0,377 dan kontribusi sebesar 14,2%. Dan nilai thitung sebesar 3,126 dengan signifikansi t sebesar 0,003. Terdapat pengaruh positif dan signifikan antara motivasi berprestasi terhadap kinerja guru pada SD dan SMP AL Fath Cirendeu, dengan korelasi positif 0,722 dan kontribusi sebesar 52,1%. Dan nilai thitung sebesar 8,018 dengan signifikansi t sebesar 0,000. Terdapat pengaruh positif dan signifikan antara supervisi dan motivasi berprestasi secara bersama-sama terhadap kinerja guru pada SD dan SMP AL Fath Cirendeu, dengan korelasi positif 0,764 dan kontribusi sebesar 58,4% dan sisanya 41,6% dipengaruhi faktor lain yang tidak diteliti. Dan nilai Fhitung sebesar 40,661 dengan signifikan F sebesar 0,000
Variations on the Author
No full text“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
[Newspaper Clipping: Author Claims Evidence of Second JFK Assassin #1]
No full textNewspaper article titled "Author Claims Evidence of Second JFK Assassin." The article states that author Richard J. Whalen concluded "that there is circumstantial evidence to support the theory of a second assassin in the shooting of President John F. Kennedy.
Also By The Same Author: AKTiveAuthor, a Citation Graph Approach to Name Disambiguation
No full textThe desire for definitive data and the semantic web drive for inference over heterogeneous data sources requires co-reference resolution to be performed on those data. In particular, name disambiguation is required to allow accurate publication lists, citation counts and impact measures to be determined. This paper describes a graph-based approach to author disambiguation on large-scale citation networks. Using self-citation, co-authorship and document source analyses, AKTiveAuthor clusters papers, achieving precision of 0.997 and recall of 0.818 over a test group of eight surname clusters
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