Making the Risk of Job Loss a Way of Life: Does it Affect Job Satisfaction?

This study investigates the relationship between job satisfaction and job security in European countries. In doing so, it attempts to take into account the endogenous nature of the job security – job satisfaction relationship after controlling for the various economic and personal characteristics. The results show that, workers in jobs with low likelihood of job termination derive higher utility from work compared to the workers in insecure jobs. This holds even after controlling for endogeneity by using both a conventional IV approach and a selection model. This appears to be the case for both men and women.European Commissio

Peningkatan Kemampuan Siswa Menulis Karangan Sederhana Melalui Media Gambar Seri Di Kelas IV SDN Ginunggung

Permasalahan dalam penelitian ini adalah rendahnya kemampuan siswa menulis karangan sederhana karena siswa kurang dapat mengembangkan kemampuan mereka dalam mengarang. Salah satu upaya yang dapat dilakukan untuk meningkatkan keterampilan mengarang pada siswa adalah dengan menggunakan media gambar yang menarik perhatian mereka.Tujuan penelitian ini yang akan di capai adalah meningkatkan keterampilan menulis karangan sederhana pada mata pelajaran bahasa Indonesia di kelas 1VA SDN Ginunggung. Untuk meningkatkan hasil belajar siswa, maka peneliti menerapkan metode penggunaaan media gambar seri. Penilitian ini dilaksanakan dua siklus dengan jumlah Siswa 25 siswa. Masing-masing siklus melalui empat tahapan yaitu perencanaan, pelaksanaan tindakan,observasi, dan refleksi. Dari hasil tindakan tes awal siklus I diperoleh ketuntasan belajar klasikal sebesar 12% dengan nilai rata-rata 44. Sedangkan perolehan hasil tes akhir tindakan siklus I diperoleh ketuntasan klasikal 44 % dengan nilai rata-rata.55. Hasil tindakan siklus II dapat diperoleh ketuntasan klasikal 88% dengan nilai rata 77. Dari hasil yang diperoleh, dapat diambil kesimpulan bahwa penelitian ini mampu menjawab tujuan penelitian, yakni penggunaan media melalui gambar seri dapat meningkatkan aktivitas belajar, performansi guru, dan hasil belajar siswa kelas IVA SDN Ginunggung

Top Quark Mass Measurements at CDF

The mass of the top quark M_top is interesting both as a fundamental parameter of the standard model and as an important input to precision electroweak tests. The Collider Detector at Fermilab (CDF) has a robust program of top quark mass analyses, including the most precise single measurement, M_top = 173.4 +/- 2.8 GeV/c^2, using 680 pb^-1 of ppbar collision data. A combination of current results from CDF gives M_top = 172.0 +/- 2.7 GeV/c^2, surpassing the stated goal of 3 GeV/c^2 precision using 2 fb^-1 of data. Finally, a combination with current D0 results gives a world average top quark mass of 172.5 +/- 2.3 GeV/c^2.Comment: 8 pages, Contribution to Proceedings of the 41st Rencontres de Moriond: Electroweak Interactions and Unified Theories, La Thuile, Italy, 11-18 March 200

Jobs as Lancaster Goods: Facets of Job Satisfaction and Overall Job Satisfaction

Overall job satisfaction is likely to reflect the combination of partial satisfactions related to various features of one’s job, such as pay, security, the work itself, working conditions, working hours, and the like. The level of overall job satisfaction emerges as the weighted outcome of the individual’s job satisfaction with each of these facets. The purpose of this study is to determine the extent and importance of partial satisfactions in affecting and explaining overall job satisfaction. Using the European Community Household Panel (ECHP) a two layer model is estimated which proposes that job satisfaction with different facets of jobs are interrelated and the individual’s reported overall job satisfaction depends on the weight that the individual allocates to each of these facets. For each of the ten countries examined, satisfaction with the intrinsic aspects of the job is the main criterion which workers use to evaluate their job and this is true for both the short and the long term.European Commissio

Orientation-dependent handedness and chiral design

Chirality occupies a central role in fields ranging from biological self-assembly to the design of optical metamaterials. The definition of chirality, as given by Lord Kelvin, associates chirality with the lack of mirror symmetry: the inability to superpose an object on its mirror image. While this definition has guided the classification of chiral objects for over a century, the quantification of handed phenomena based on this definition has proven elusive, if not impossible, as manifest in the paradox of chiral connectedness. In this work, we put forward a quantification scheme in which the handedness of an object depends on the direction in which it is viewed. While consistent with familiar chiral notions, such as the right-hand rule, this framework allows objects to be simultaneously right and left handed. We demonstrate this orientation dependence in three different systems - a biomimetic elastic bilayer, a chiral propeller, and optical metamaterial - and find quantitative agreement with chirality pseudotensors whose form we explicitly compute. The use of this approach resolves the existing paradoxes and naturally enables the design of handed metamaterials from symmetry principles