Judul: Environmental management model of heavy equipment components industry based on public participation and collaboration
Abstrak: components and localized in an industrial area, there will be an impact on the environment. Data analysis was performed descriptively and with the Structural Equation Model (SEM). The results of SEM analysis showed that the developed model has a fairly high level of validity that is shown by the minimum fit chi-square value of 87.95 (P = 0.00100). Based on said model, it shows that the company's performance in waste management is largely determined by employee integrity and objectivity of the new employees followed later by the independence of the employees in waste management. This research was conducted to support increasing effectiveness and efficiency of corporate management, by determining alternative forms of managing the heavy industrial equipment components environment (PLIKAB)-based on participation and society partnerships. The determination of alternative uses analytical hierarchy process (AHP) with the help of the Criterium Decision Plus v3.04 software.These results indicate that according of experts, the environmental management of industrial waste heavy equipment components must consider the technological aspects of its management. This can be seen from the weighting of each element that indicates the technology element has the greatest weight, which is 0.456. While the most influential actor in the management is the company (0.451), The best alternative for the management of industrial waste components of the heavy equipment is to form managers based on partnerships by different stock ownership (0.791). It is considered much better than by forming managers based on partnerships by the same stock (0.209).
Keyword: heavy equipment industry, environmental management, analitycal hierarchy process (AHP), dynamic model, Structural Equation Model (SEM)

Judul: Valuing Environmental Services Using Discrete Choice Experiment (Case Study: Green Belt PT Semen Padang)
Abstrak: Aktivitas produksi semen oleh PT Semen Padang menghasilkan emisi yang berpotensi menyebabkan pencemaran udara. Program green belt merupakan upaya yang dilakukan oleh PT Semen Padang untuk menanggulangi dampak dari emisi yang dihasilkan, melalui aktivitas ruang penghijauan di area pabrik dan perumahan di sekitarnya. Keberadaan green belt di kawasan perumahan yang dekat dengan aktivitas perusahaan bertujuan untuk untuk memperbaiki kualitas udara yang merupakan jasa lingkungan dari ruang hijau tersebut. Pentingnya fungsi area green belt ini membutuhkan pengelolaan yang baik dengan melibatkan partisipasi masyarakat. Tujuan penelitian ini adalah menganalisis bentuk kontribusi yang diminati masyarakat untuk mempertahankan keberadaan green belt dan mengestimasi kesediaan masyarakat berpartisipasi dalam program green belt yang menunjukkan nilai ekonomi jasa lingkungan green belt PT Semen Padang. Analisis data dilakukan dengan metode analisis deskriptif kuantitatif dan contingent choice model dengan teknik discrete choice experiment. Hasil analisis menunjukkan: (1) Bentuk kontribusi yang paling diminati masyarakat adalah melakukan 2 hari kontribusi untuk merawat dan mejaga green belt di setiap bulannya dengan penanaman sebanyak 150 pohon dan keanekaragaman hayati pada tingkat sedang. (2) Nilai rata-rata WTP rumah tangga terhadap program green belt adalah Rp1.976.184 per tahun serta total WTP yang diperoleh sebesar Rp1.622.941.110. Nilai ini menunjukkan nilai ekonomi green belt sebagai jasa lingkungan untuk mengendalikan pencemaran udara., The production of cement by PT Semen Padang also release emissions which most likely cause air pollution. Thus, the company initiate a green belt as an urban greening program to minimize the impact of the emissions released in the factory and surrounding residential area. A green belt in a residential area close to the company's activities aims to improve air quality which is an environmental service of the green space. The importance of the function of this green belt area requires good management by involving community participation. The purpose of this study is to analyze the form of contribution that people are interested to maintain the existence of a green belt and to estimate the willingness of the community to participate in a green belt program that shows the economic value of PT Semen Padang's green belt environmental services. Data analysis was perfomed using quantitative descriptive analysis and contingent choice model using discrete choce experiment. The results of the analysis show: (1) The form of contribution that community is most interested in doing two days of contribution to maintain the green belt every month by planting 150 trees and biodiversity at a moderate level. (2) The average value of household WTP against the green belt program is IDR 1,976,184 per year, and the total WTP obtained is IDR 1,622,941,110. This value shows the economic value of the green belt as an environmental service to control air pollution
Keyword: partisipasi, valuasi ekonomi, willingness to pay, partisipasi, valuasi ekonomi, willingness to pay

Judul: Ornithonyssus Bursa (Berlese, 1888) Famili Macronyssidae yang Menyerang Unggas Dan Penaggulangannnya
Abstrak: Ornithonyssus bursa adalah tungau penghisap darah pada unggas di daerah tropis dan subtropis. Tungau ini relatif kecil, dengan panjang tubuh antara 700-1000 mikron dan lebarnya 250-490 mikron. Tubuhnya bulat berwarna coklat kekuningan sebelum menghisap darh dan berwarna merah setelah menghisap darah dari induk semangnya.
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